New edible additives as Green Inhibitors for Preventing Methane Hydrate Formation
Publication date: Available online 20 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Shadi Mollashahi Sanatgar, Kiana PeyvandiAbstractIn this work, evaluation of two edible additives, based on gums, has been investigated on the induction time and mole consumed during methane hydrate formation. It has been reported that gum solutions such as Guar gum and Arabic gum, which are used as a food thickening agent, increase the viscosity of water. Interestingly, it has also been found that these compounds exhibit kinetic inhibition effect on methane hydrate formation. To investigate this effect, experiment...
Source: Journal of Environmental Chemical Engineering - May 21, 2019 Category: Chemistry Source Type: research

A new hybrid sorbent 2,2’-pyridil functionalized SBA-15 (Pyl-SBA-15) synthesis and its applications in solid phase extraction of Cu(II) from water samples
Publication date: Available online 21 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): K. Imran, Y. Harinath, B. Ramesh Naik, N. Sathish Kumar, K. SeshaiahAbstractA mesoporous hybrid material, 2,2’-Pyridil-SBA-15 (Pyl-SBA-15) was synthesized by anchoring 2,2’-Pyridil onto the surface of SBA-15. The application of Pyl-SBA-15 as a sorbent in separation and preconcentration of Cu(II) ions in water samples was studied. Effect of different parameters like pH, volume of eluent, sample flow rate and interfering ions was investigated. The preconcentration capacity value of the prepared material ...
Source: Journal of Environmental Chemical Engineering - May 21, 2019 Category: Chemistry Source Type: research

Utilization of kinnow peel extract with different wastewaters for cultivation of microalgae for potential biodiesel production
This study suggests that kinnow peel extract with different wastewaters produced high biomass and it is economically viable medium for biodiesel feedstock production.Graphical abstract (Source: Journal of Environmental Chemical Engineering)
Source: Journal of Environmental Chemical Engineering - May 21, 2019 Category: Chemistry Source Type: research

Microreactors for the continuous and green synthesis of palladium nanoparticles: Enhancement of the catalytic properties
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): Esteban Gioria, Francisco Wisniewski, Laura GutierrezAbstractSynthesis of palladium nanoparticles (PdNPs) employing green reagents like glucose and starch was performed in two different reaction configurations: (i) the conventional batch method and (ii) with continuous microreactor technology. The synthetized nanoparticles were characterized by XRD, UV–vis spectroscopy and TEM. The reaction conducted in the microreactor led onto smaller PdNPs with a monodispersed size distribution. The catalytic response of b...
Source: Journal of Environmental Chemical Engineering - May 21, 2019 Category: Chemistry Source Type: research

Application of modified Spirulina platensis and Chlorella vulgaris powder on the adsorption of heavy metals from aqueous solutions
Publication date: Available online 18 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Mohammad Hossein Sayadi, Omolbanin Rashki, Elham ShahriAbstractOne of the effective methods to remove heavy metals is the use of biosorbents. The aim of this study was to assess the adsorption rate of metal ions; cadmium, lead and copper in the aqueous solution with Spirulina platensis and Chlorella vulgaris algae biosorbent sulfuric acid–modified powder. The adsorption rate of metals cadmium, lead and copper via modified Spirulina platensis and Chlorella vulgaris adsorbents by varied adsorbent contents (0.5-...
Source: Journal of Environmental Chemical Engineering - May 19, 2019 Category: Chemistry Source Type: research

Removal of carbon disulfide from air stream by absorption combined with electrochemical oxidation
Publication date: Available online 18 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Chen Jinyuan, Chen Ange, Qiu Panli, Huang Liwei, Zhou QinghuaAbstractThe removal of carbon disulfide (CS2) in air stream by aqueous solution absorption combined with electrochemical oxidation was experimentally investigated. A rod-to-cylinder electrochemical oxidation reactor is employed for the experiment. The sample gas was introduced into the reactor from the bottom of the reactor and leaving from the upside of the reactor. It was found that the removal rate of CS2 in NaCl solution is higher than that in Na2SO4 ...
Source: Journal of Environmental Chemical Engineering - May 19, 2019 Category: Chemistry Source Type: research

Sub and supercritical water oxidation of pharmaceutical wastewater
Publication date: Available online 17 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): S.V. Prasad Mylapilli, Sivamohan N. ReddyAbstractSub and supercritical water oxidation (Sub- CWO & SCWO) technology has gained attention over the past few years due to near complete conversions at shorter residences times. A pharmaceutical sample containing variety of analgesics, antibiotics, antipyretics, antifungal, β-blockers and drug intermediates contributing to overall total organic carbon (TOC) of 2017 ± 49 mg/L was collected from a nearby pharmaceutical industry for this...
Source: Journal of Environmental Chemical Engineering - May 18, 2019 Category: Chemistry Source Type: research

Behaviour of Si, Al, Fe and Mg during oxidative sulfuric acid leaching of low grade uranium ore: A kinetic approach
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): V. Madakkaruppan, Anitha Pius, T. Sreenivas, T.S. SunilkumarAbstractThis paper deals with the behavior of reactive micaceous gangue minerals like chlorite and biotite during the oxidative sulfuric acid leaching of uranium ores taking case study of a typical low grade Indian uranium ore hosted by chlorite-biotite-muscovite-quartzo-feldspathic schist. The progress of the gangue minerals chemical reactivity was monitored kinetically by analyzing the concentration of Si, Al, Fe and Mg ions in the leach liquor and throu...
Source: Journal of Environmental Chemical Engineering - May 18, 2019 Category: Chemistry Source Type: research

Simultaneous degradation of the pharmaceuticals gemfibrozil, hydrochlorothiazide and naproxen and toxicity changes during UV-C and UV-C/H2O2 processes in different aqueous matrixes
Publication date: Available online 17 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Cleiseano E.S. Paniagua, Ivo Amildon Ricardo, Eduardo O. Marson, Bárbara R. Gonçalves, Alam G. TrovóAbstractThe degradation of pharmaceuticals and toxicity changes in different aqueous matrixes treated by UV-C and UV-C/H2O2 were evaluated. No pH influence (4.0, 6.0 and 7.0) on the degradation of the target compounds was obtained in distilled water for any target compound. Hydrochlorothiazide was the most easily photodegraded followed by naproxen and gemfibrozil. The matrix composition strongly ...
Source: Journal of Environmental Chemical Engineering - May 18, 2019 Category: Chemistry Source Type: research

“Removal of anionic dyes from aqueous solution by novel pyrrolidinium-based Polymeric Ionic Liquid (PIL) as adsorbent: Investigation of the adsorption kinetics, equilibrium isotherms and the adsorption mechanisms involved”
Publication date: Available online 17 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): M. Makrygianni, Z.G. Lada, A. Manousou, C.A. Aggelopoulos, V. DeimedeAbstractA novel synthesized N-methyl pyrrolidinium-based Polymeric Ionic Liquid (PIL) was examined as adsorbent for the removal of the widely used in industries anionic dyes, Orange G (OG), Orange II (OII) and Sunset Yellow FCF (SY), from wastewater. The synthesis of the adsorbent was performed in 3 steps involving a free radical polymerization, an N-quaternization reaction and an ion exchange reaction. The final PIL and the precursor copolymers w...
Source: Journal of Environmental Chemical Engineering - May 18, 2019 Category: Chemistry Source Type: research

A comparative study of ZnO-PVP and ZnO-PEG nanoparticles activity in membrane photocatalytic reactor (MPR) for industrial dye wastewater treatment under different membranes
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): Amira Liyana Desa, Nur Hanis Hayati Hairom, Dilaeleyana Abu Bakar Sidik, Nurasyikin Misdan, Norhaniza Yusof, Mohd Khairul Ahmad, Abdul Wahab MohammadAbstractMembrane photocatalytic reactor (MPR) has gained immense research interest as valuable dye wastewater treatment over the conventional treatment due to its advantages. The effect of zinc oxide in the presence of polyethylene glycol (ZnO-PEG) nanoparticles in MPR under different membranes was studied in order to investigate the interaction of photocatalyst toward...
Source: Journal of Environmental Chemical Engineering - May 16, 2019 Category: Chemistry Source Type: research

Synthesis and studies of ZnO doped with g-C3N4 nanocomposites for the degradation of tetracycline hydrochloride under the visible light irradiation
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): Haroon Ur Rasheed, Xiaomeng Lv, Wei Wei, Waleed Yaseen, Nabi Ullah, Jimin Xie, Weihua ZhuAbstractHerein, ZnO@CN nanocomposites synthesized by facile thermal decomposition strategy by using ZIF-8 as a precursor and examined the photodegradation studies against antibiotic tetracycline hydrochloride (TC) as a pollutant. The characterization of ZnO@CN was done by different analytical techniques such as XRD, FT-IR, SEM, DRS, XPS, PL and EIS which indicated that the composite has a narrow bandgap, hexagonal- shaped nanob...
Source: Journal of Environmental Chemical Engineering - May 16, 2019 Category: Chemistry Source Type: research

Biofuel preparation from waste chicken fat using coal fly ash as a catalyst: Optimization and kinetics study in a batch reactor
The objectives were to find the optimizing condition to produce the maximum biofuel using a 2k factorial level experimental design and to study the kinetics of the reaction. The experiment was performed in a laboratory scale 70-mL micro-reactor, and the obtained biofuel from the cracking process was analyzed by simulated distillation gas chromatography and gas chromatography-mass spectrometry. Furthermore, the fuel properties and elemental analysis of the biofuel were characterized. The effects of the temperature (420–460 °C), reaction time (45–75 min), catalyst loading (1–5% by weight; ...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

The effects of water hyacinth pretreated digestate on Lupinus termis L. seedlings under salinity stress: a complementary study
In this study, the effects of pretreated water hyacinth mixed with cow dung (WH/CD) compost on Lupinus termis seedlings under salinity stress (150 mM NaCl) were investigated. Results showed that WH/CD compost amendment had positive effects on the growth and physiological criteria of L. termis. The application of compost led to a significant increase in the root depth, shoot height, leaf area and fresh/dry weight of roots and shoots of seedlings under salinity. It also led to a significant increase in Chl. a, Chl. b and carotenoids to 53.3, 72.1 and 81.3%, respectively over that when under salinity stress. However, thi...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

Removal kinetics of cationic azo-dye from aqueous solution by poly-γ-glutamic acid biosorbent: Contributions of adsorption and complexation/precipitation to Basic Orange 2 removal
Publication date: Available online 14 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Misaki Hisada, Yuriko Tomizawa, Yoshinori KawaseAbstractMechanisms of cationic azo-dye Basic Orange 2 (BO2) removal by poly-γ-glutamic acid (PGA) biosorbent were quantitatively examined. The contributions of adsorption and complexation/precipitation on BO2 removal by PGA were quantified at pH3 − 9 and the maximum overall BO2 removal of 99.5 % was obtained at pH5. At pH less than 4(˜pKa of PGA), the positively charged protonated PGA did not favor the ion-exchange adsorption of positiv...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

Facile production of silver-reduced graphene oxide nanocomposite with highly effective antibacterial performance
Publication date: Available online 14 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Long Chen, Zhi Li, Mingguang ChenAbstractReduced graphene oxide (rGO) has broad applications based upon its superior electronic properties. In many cases, an additional antibacterial function of these materials requests physical or chemical modification, such as incorporating silver nanoparticles into rGO to produce silver-reduced graphene oxide (Ag/rGO) composite. Most of the previous methods of preparing Ag/rGO are top-down techniques starting from graphite exfoliation into graphene oxide (GO), to the reduction o...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

Clean and new strategy for catalytic conversion of agriculture waste shells to activated carbon via microwave-assisted impregnation: Applied and eco-friendly aspect for decoloration of industrial corn syrup and process identifications
Publication date: Available online 14 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Zahra Teimouri, Amin Salem, Shiva SalemAbstractThe vast plantation of agriculture products leads to large amount of waste shells emanating from industrial processing which pose serious pollutions in lithosphere and atmosphere when is delivered by burning. In the present study, a clean and rapid method was demonstrated to develop a novel strategy for catalytic conversion of agriculture shells to microporous activated carbon as efficient adsorbent via microwave-assisted impregnation. In the proposed process, differen...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

A rapid and environmentally friendly analytical method based on conductive polymer as extraction phase for disposable pipette extraction for the determination of hormones and polycyclic aromatic hydrocarbons in river water samples using high-performance liquid chromatography/diode array detection
In this study, for the first time, an analytical methodology comprised of disposable pipette extraction technique (DPX) based on a conductive polymer (polypyrrole - PPy) was developed for the simultaneous extraction/determination of 14 compounds including two hormones and twelve polycyclic aromatic hydrocarbons in river water samples. Pipette tips of 1 mL were filled with the extraction material, named PPy.CTAB, and the separation/detection was performed HPLC-DAD. The extraction material was synthesized and characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The o...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

Study the performance of continuous bioreactor for the treatment of wastewater containing methyl parathion by isolated Alcaligenes species
Publication date: Available online 14 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Sachin Rameshrao Geed, Kulbhushan Samal, Harsh Srivastava, Bheemiseetty KartheekAbstractMethyl parathion degradation potential bacterial species was successfully isolated from the agricultural field and identified as Alcaligenes sp. SRG. The coconut coir was used as packing media for the bioreactor. The process parameters were optimized in a batch experiment as pH (7 ± 0.3); temperature (35 ± 3 °C) and methyl parathion concentration as 150 mg/L. The contin...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

Photocatalytic performance of granite waste in the decolorization and degradation of Reactive Orange 122
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): S.A.D. Ferreira, J.F. Donadia, G.R. Gonçalves, A.L. Teixeira, M.B.J. G. Freitas, A.A.R. Fernandes, M.F.F. LelisAbstractThe photocatalytic activity of granite waste (GW), an iron-rich material, was evaluated by the decolorization and degradation of Reactive Orange 122 (RO122) in the presence of H2O2 by solar photo-Fenton. X-ray powder diffraction (XRD), 57Fe Mössbauer spectroscopy, and scanning electron microscopy (SEM) confirmed the presence of magnetite (Fe3O4), hematite (α-Fe2O3), and zero-valen...
Source: Journal of Environmental Chemical Engineering - May 15, 2019 Category: Chemistry Source Type: research

Synthesis and degradation studies of ZnO doped with g-C3N4 nanocomposite for the degradation of Tetracycline hydrochloride under the visible light irradiation
Publication date: Available online 11 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Haroon Ur Rasheed, Xiaomeng Lv, Wei Wei, Waleed Yaseen, Nabi Ullah, Jimin Xie, Weihua ZhuAbstractHerein, ZnO@CN nanocomposites synthesized by facile thermal decomposition strategy by using ZIF-8 as a precursor and examined the photodegradation studies against antibiotic tetracycline hydrochloride (TC) as a pollutant. The characterization of ZnO@CN was done by different analytical techniques such as XRD, FT-IR, SEM, DRS, XPS, PL and EIS which indicated that the composite has a narrow bandgap, hexagonal- shaped nanob...
Source: Journal of Environmental Chemical Engineering - May 13, 2019 Category: Chemistry Source Type: research

Sunlight active ZnO@FeHCF nanocomposite for the degradation of bisphenol A and nonylphenol
Publication date: Available online 12 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Rachna, Manviri Rani, Uma ShankerAbstractEndocrine phenols (EPs), cytotoxic, genotoxic and persistent pollutants have been found in most environmental monitoring. Therefore, photodegradation of these EPs, namely bisphenol a (BPA) and nonylphenol (NP) was explored in water. Nanocomposite of iron hexacyanoferrate encapsulated with zinc oxide (ZnO@FeHCF) was synthesized by natural plant extract A. indica mediated co-precipitation method. The nanocomposite (100 nm) had thin flakes like morphology with irregular su...
Source: Journal of Environmental Chemical Engineering - May 13, 2019 Category: Chemistry Source Type: research

Magnetic iron oxide nanoparticles functionalized with C60 phosphonic acid derivative for catalytic reduction of 4-nitrophenol
Publication date: Available online 10 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Piotr Piotrowski, Agnieszka Krogul-Sobczak, Andrzej KaimAbstractSynthesis and self-assembly of C60 fullerene phosphonic acid derivative onto magnetic iron oxide nanoparticles stabilized with oleic acid (OA) for catalytic applications is presented. The as obtained composite nanoparticles were characterized using transmission electron microscopy (TEM), dynamic light scattering (DLS), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and cyclic voltammetry (CV). As result, introduction of functi...
Source: Journal of Environmental Chemical Engineering - May 11, 2019 Category: Chemistry Source Type: research

Effective devulcanization of ground tire rubber using choline chloride-based deep eutectic solvents
Publication date: Available online 10 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Ricky Saputra, Rashmi Walvekar, Mohammad Khalid, Kaveh Shahbaz, Suganti RamradAbstractThe effect of deep eutectic solvents (DES) in devulcanization of ground tire rubber (GTR) was explored for the first time in this work. Three different DESs, namely ChCl:Urea, ChCl:ZnCl2 and ZnCl2:Urea were prepared and their physicochemical properties were examined. GTR was mixed with various DESs which were further sonicated and heated at various time intervals. The treated GTR was analyzed by energy dispersive X-ray (EDX), Four...
Source: Journal of Environmental Chemical Engineering - May 11, 2019 Category: Chemistry Source Type: research

Modeling the UV/H2O2 oxidation of phenolic compounds in a continuous-flow reactor with reflective walls
Publication date: Available online 11 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Tianqi Zhang, L. Itzel Márquez-Hernández, Robert G. Arnold, George Diefenthal, A. Eduardo SáezAbstractContinuous-flow advanced oxidation processes (AOPs) are commonly used for the destruction of persistent trace organics that survive conventional wastewater treatment processes. The UV/H2O2 process is one of the most widely used AOPs. A common configuration for this process consists of a concentric lamp located at the center of a pipe. In this work, two novel flow-through UV reactors with concen...
Source: Journal of Environmental Chemical Engineering - May 11, 2019 Category: Chemistry Source Type: research

Formation and elimination of nitrosamines and nitramines in freshwaters involved in post-combustion carbon capture process
This study provides an alarmist situation of nitrosamines and nitrosamines formation from amine-based post-combustion CO2 capture technology based on the literature available for water treatment as well as CO2 capture. The manuscript discusses the concerns, formation and elimination of nitramines and nitrosamines.Graphical abstract (Source: Journal of Environmental Chemical Engineering)
Source: Journal of Environmental Chemical Engineering - May 11, 2019 Category: Chemistry Source Type: research

N-doped reduced graphene oxide decorated with Fe3O4 composite: Stable and magnetically separable adsorbent solution for high performance phosphate removal
This study successfully prepared a nitrogen-doped reduced graphene oxide (NrGO) and nitrogen doped reduced graphene oxide decorated with Fe3O4 nanoparticles as nanocomposite adsorbents which exhibited high capacity and specific affinity towards phosphate. The crystal structure, surface morphology and stability of the adsorbents were investigated by various physiochemical characterizations which revealed the successful doping of nitrogen in GO and uniformly covered by Fe3O4 nanoparticles. The kinetic study suggests the pseudo second-order better fitted the phosphate adsorption with physisorption and chemisorption. The Freun...
Source: Journal of Environmental Chemical Engineering - May 11, 2019 Category: Chemistry Source Type: research

Facile synthesis of magnetic iron oxide coated Amberlite XAD-7HP particles for the removal of Cr(III) from aqueous solutions: Sorption, equilibrium, kinetics and thermodynamic studies
Publication date: Available online 9 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Aslı Erdem Yayayürük, Onur YayayürükAbstractChromium and its compounds are of particular concern due to their toxicity. Thus, their removal is of great importance before discharging into the environment. In this research, chemically modified magnetic Amberlite XAD-7HP was synthesized using Fe(II) and Fe(III) ions (iron oxide coated Amberlite XAD-7HP) and used for the removal of Cr(III) ions from aqueous solutions. The modified sorbent was characterized using several techniques viz., XRD, SEM, BE...
Source: Journal of Environmental Chemical Engineering - May 10, 2019 Category: Chemistry Source Type: research

Green Synthesis Derived Pt-nanoparticles Using Xanthium Strumarium Leaf Extract and their Biological Studies
Publication date: Available online 9 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): P. Vijaya Kumar, S. Mary Jelastin Kala, K.S. PrakashAbstractA bio-synthetic green route to the synthesis of Platinum nanoparticles (PtNPs) with extract of Xanthium Strumarium Leaf is described. The synthetic procedure is very simple and one step without using of capping and reducing agent. The synthesized nanoparticles were extensively characterized by UV Visible spectroscopy, FT-IR, PXRD, SEM-EDAX and TEM analysis. The size, shape and purity were well analyzed. TEM analysis showed the formation of nanoparticles in ...
Source: Journal of Environmental Chemical Engineering - May 10, 2019 Category: Chemistry Source Type: research

Adsorbents and removal strategies of non-steroidal anti-inflammatory drugs from contaminated water bodies
Publication date: Available online 8 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Nomchenge Yamkelani Mlunguza, Somandla Ncube, Precious Nokwethemba Mahlambi, Luke Chimuka, Lawrence Mzukisi MadikizelaAbstractIn the past few decades, there has been a rapid growth in the number of published articles that have focused on the environmental monitoring of non-steroidal anti-inflammatory drugs (NSAIDs). This is due to their extensive usage for the treatment of various diseases such as arthritis, musculo-skeletal pain and other various acute pains, because of their availability over the counter without a...
Source: Journal of Environmental Chemical Engineering - May 10, 2019 Category: Chemistry Source Type: research

Review on advances in photocatalytic water disinfection utilizing graphene and graphene derivatives-based nanocomposites
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): Vishal Dutta, Pardeep Singh, Pooja Shandilya, Sheetal Sharma, Pankaj Raizada, Adesh K. Saini, Vinod Kumar Gupta, Ahmad Hosseini-Bandegharaei, Shipli Agarwal, Abolfazl Rahmani-SaniAbstractGraphene, the recently discovered allotrope of carbon, is a single atom layered aromatic carbon material which is tightly packed into a two-dimensional hexagonal crystal lattice. It is the thinnest material known to man and has a huge application in various fields of science and technology. However, despite having excellent charact...
Source: Journal of Environmental Chemical Engineering - May 10, 2019 Category: Chemistry Source Type: research

Monitoring the biodegradation of TPH and PAHs in refinery solid waste by biostimulation and bioaugmentation
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): Aikaterini Zeneli, Eleni Kastanaki, Fotini Simantiraki, Evangelos GidarakosAbstractThe effect of natural attenuation, biostimulation and bioaugmentation-biostimulation on the removal of petroleum pollutants, specifically Total Petroleum Hydrocarbons (TPH), as well as Polycyclic Aromatic Hydrocarbons (PAHs) in a refinery solid waste was estimated. The experimental procedure took place on a laboratory scale in three separate tanks (natural attenuation, biostimulation and biostimulation-bioaugmentation tank) for a per...
Source: Journal of Environmental Chemical Engineering - May 10, 2019 Category: Chemistry Source Type: research

Performance of HKUST-1 Metal-Organic Framework for a VOCs mixture adsorption at realistic concentrations ranging from 0.5 to 2.5 ppmv under different humidity conditions
In this study, HKUST-1 framework utilization as an adsorbent was characterized in realistic indoor air conditions. Adsorption capacities and breakthrough behaviors of this material were studied for low concentration gas mixtures with controlled relative humidity. Results demonstrate high adsorption capacities (23.8, 14.7, 16.5, 5.0, and 1.4%wt for the respective mono-pollutant gases: toluene, o-xylene, ethanol, acetone and acetaldehyde). The adsorption capacities and breakthrough curves of binary and five gases mixtures give information about the competitions between pollutants and show that the studied volatile organic co...
Source: Journal of Environmental Chemical Engineering - May 10, 2019 Category: Chemistry Source Type: research

Electrochemical Reduction of CO2 to Ethanol Using Copper Nanofoam Electrode and 1-Butyl-3-Methyl-Imidazolium Bromide as the Homogeneous Co-Catalyst
Publication date: Available online 7 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Reyhaneh Fazel Zarandi, Behzad Rezaei, Hassan S Ghaziaskar, Ali Asghar EnsafiAbstractIn this research, an electrochemical system, based on copper nanofoam accompanied by 1-butyl-3-methyl-imidazolium bromide (BMIMB) as the homogeneous co-catalyst for the electrochemical conversion of CO2 at ambient pressure and temperature was developed. Although, there have been some efforts for utilization of copper nanofoam or imidazolium-based catalysts toward the electro-reduction of CO2, evaluation of both catalysts to take adv...
Source: Journal of Environmental Chemical Engineering - May 8, 2019 Category: Chemistry Source Type: research

A case study of cesium sorption onto concrete materials and evaluation of wash agents: implications for wide area recovery
Publication date: Available online 7 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Michael D. Kaminski, Carol J. Mertz, James Jerden, Michael Kalensky, Nadia Kivenas, Matthew MagnusonAbstractTo support the viability of a wash-down approach to mitigating nuclear contamination, this study presents a characterization of the aggregate of a common concrete by optical microscopy and the sorption-desorption characteristics of cesium from these into potential wash solutions. Various minerals with weathered surfaces displayed strong affinity for 137Cs with an effective partition coefficient Kd =&thi...
Source: Journal of Environmental Chemical Engineering - May 8, 2019 Category: Chemistry Source Type: research

Comparative analyses of carbon dioxide capture from power plant flue gas surrogate by micro and mesoporous adsorbents
Publication date: June 2019Source: Journal of Environmental Chemical Engineering, Volume 7, Issue 3Author(s): Iylia Idris, Aman Abdullah, Ili Khairunnisa Shamsudin, Mohd Roslee OthmanAbstractPressure swing adsorption (PSA) performances using 5 different types of adsorbents were compared to observe their usefulness in achieving the balance between purity and recovery of the captured carbon dioxide (CO2). Three of the adsorbents were mesoporous (pore size of greater than 2 nm), whereas the other two adsorbents were microporous (pore size of smaller or equal to 2 nm) in nature. Among the 5 adsorbents being teste...
Source: Journal of Environmental Chemical Engineering - May 8, 2019 Category: Chemistry Source Type: research

The effect of acidogenic and methanogenic conditions on the availability and stability of carbon, nitrogen and phosphorus in a digestate
This study compared eleven organic substrates under acidogenic and methanogenic fermentation regarding their effects on digestate organic carbon, ammoniacal nitrogen, and inorganic phosphorus concentration. The result showed increases in phosphate concentration under acidogenic conditions and reduction in ammonium nitrogen after drying at 100 °C. The highest phosphate values of 3.2 ± 0.38 g/kg were achieved using whey permeate substrate while the effect of drying on ammonium nitrogen concentration was lowest for acidogenic bird seed fermentation with an ammonium loss of 59.7%. Both re...
Source: Journal of Environmental Chemical Engineering - May 7, 2019 Category: Chemistry Source Type: research

N-doped reduced graphene decorated with Fe3O4 composite: stable and magnetically separable adsorbent solution for high performance phosphate removal
This study successfully prepared a nitrogen doped reduced graphene oxide (NrGO) and nitrogen doped reduced graphene oxide decorated with Fe3O4 nanoparticles as nanocomposite adsorbents which exhibited high capacity and specific affinity towards phosphate. The crystal structure, surface morphology and stability of the adsorbents were investigated by various physiochemical characterizations which revealed the successful doping of nitrogen in GO and uniformly covered by Fe3O4 nanoparticles. The kinetic study suggests the pseudo second-order better fitted the phosphate adsorption with physisorption and chemisorption. The Freun...
Source: Journal of Environmental Chemical Engineering - May 7, 2019 Category: Chemistry Source Type: research

Recovery of gold using graphene oxide/calcium alginate hydrogel Beads from a scrap solid state detector
Publication date: Available online 3 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Sudeshna Saha, Manisha Venkatesh, Hirakendu Basu, Mehzabin Vivek Pimple, Rakesh Kumar SinghalAbstractHydrogel beads was developed for the selective removal of gold from a scrap solid state detector. Beads were synthesized by graphene oxide impregnation in calcium alginate matrix (Gra-Alg) using sol gel method. Scrap solid state detector was dissolved in aqua regia. Copper (Cu) from the solution was recovered using conventional chemical separation where as gold(Au) from the supernatant solution was selectively isolat...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Catanionic mixed micellar cloud point extraction of metal ions in coal fly ash samples and their determination by CS-ETAAS
Publication date: Available online 2 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): K. Ravi Kumar, P. ShyamalaAbstractThe catanionic mixed micellar cloud point extraction for the simultaneous pre-concentration and determination of different analytes in coal fly samples with Cetyltrimethylammonium bromide (CTAB) and Sodium dodecyl sulfate (SDS) mixed micelles using continuum source electro thermal atomic absorption spectrometry (CS-ETAAS) has been demonstrated. The negative complexes formed by analytes with both chloride ions and negative surfactant SDS are converted into ion pair complexes with pos...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Removal of Fe (II) ions from drinking water using Electrocoagulation (EC) process: Parametric optimization and kinetic study
Publication date: Available online 2 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Daisy Das, Barun Kumar NandiAbstractPresence of Fe (II) ions in drinking water across different parts of India is a serious health concern in recent years. To reduce the Fe (II) ions in drinking water, researches are now being carried out using efficient and economical methods like adsorption, electrocoagulation etc. In the present work, experimental studies were carried out to optimize various operating parameters of electrocoagulation (EC) for efficient removal of iron (Fe (II) ions) from drinking water. Further, ...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

New chemical products formation from textile dye degradation, chitinolytic and antioxidant activity in new strain nbpc5-18 of Cellulosimicrobium sp. TH-20
Publication date: Available online 2 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Bilquees Tabasum, Prajakta R. Dhagale, Kirti M. Nitnaware, Harichandra A. Nikule, T.D. NikamAbstractThe new strain nbpc5-18 of Cellulosimicrobium TH-20, isolated from the filaments of Scytonema sp., was characterized by phenotypic, chemotaxonomic and 16S rRNA gene sequencing. Nucleotide homology and phylogenetic analysis indicated the affiliation of bacterium strain nbpc 5-18 (accession No. MH298840) with Cellulosimicrobium TH-20 but chemotaxonomic features differed from the related taxa. G + C content...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Direct transformation of waste printed circuit boards into high surface area t-SnO2 for photocatalytic dye degradation
In this study, a spent solution from e-waste processing directly was transformed into high surface area t-SnO2 nano-particles (NPs). We show how t-SnO2 NPs are formed as an unexpected spontaneous precipitation with a very slow kinetic rate from an impregnated e-waste solution in the absence of any additives. This research showed that conducting a precipitation process on equilibrium lines can generate high-quality NPs. The mechanism of the process and the characteristics (phase and size) of the NPs were analyzed using HR-TEM, BET, HR-XPS, FTIR, TGA-DTG, and HR-XRD (using Rietveld refinement). The NPs provides a very high s...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Comparative analyses of carbon dioxide capture from surrogate power plant flue gas by micro and mesoporous adsorbents
Publication date: Available online 2 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Iylia Idris, Aman Abdullah, Ili Khairunnisa Shamsudin, Mohd Roslee OthmanAbstractPressure swing adsorption (PSA) performance using 5 different types of adsorbents were compared to observe their usefulness in achieving the balance between purity and recovery of the captured carbon dioxide (CO2). Three of the adsorbents were mesoporous (pore size of greater than 2 nm), whereas the other two adsorbents were microporous (pore size of smaller or equal to 2 nm) in nature. Among the 5 adsorbents being tested,...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Effect of consecutive SiCl4 and hydrophobic molecule modification of cotton cloth for fresh oils and used oils removal
Publication date: Available online 2 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Sorapong JanhomAbstractThe aim of this study was to enhance the hydrophobicity of cotton cloth using silicon tetrachloride (SiCl4) combined with water-repellent agents 1H,1H,2H,2H-perfluorooctyltriethoxysilane (POTS), dimethyldichlorosilane (DMDCS), and stearic acid (SA) for cooking oil and motor oil removal. The cotton cloths were firstly pretreated with SiCl4, at this stage the SiO2 was formed on the cotton cloth surfaces. Secondly, the untreated and SiCl4-treated cotton cloths were separately modified with POTS a...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Synthesis and characterization of carbon xerogel based iron catalyst for use in wet air oxidation of aqueous solution containing 2, 4, 6–trichlorophenol
Publication date: Available online 2 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Manjari Kumari, Anil K. SarohaAbstractCarbon xerogels were prepared using tannic acid, resorcinol and formaldehyde as precursors. The water content of the wet organic xerogels was replaced with t-butanol as a solvent to prevent pore collapse during ambient drying and the carbon xerogels were modified using o-phosphoric acid to improve its surface and textural properties. The xerogels and the carbon xerogel based iron catalyst were characterized for surface, textural and physico-chemical properties using various tech...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Evaluation of coagulating efficiency and water borne pathogens reduction capacity of Moringa oleifera seed powder for treatment of domestic wastewater from Zomba, Malawi
The objective was to investigate the potential of Moringa oleifera seed powder in enhancing domestic wastewater treatment through the reduction of microbial load, turbidity and total dissolved solids (TDS). Moringa oleifera powder seed reduced turbidity from 287 to 38.8 Nephelometric turbidity unit (NTU), increased pH from 4.3 to 7.1, and set total dissolved solids (TDS) at standards recommended by World Health Organization guidelines for drinking water. Optimum reduction in microbial load was observed at a dosage of powder of 15 gL−1, with particular potency against Salmonella and Shigella spp. However, each dose of...
Source: Journal of Environmental Chemical Engineering - May 4, 2019 Category: Chemistry Source Type: research

Preparation of Pt, Pd and Cu nano single and bimetallic systems-supported NaY zeolite and test their activity in p-nitrophenol reduction and as anticancer agents
Publication date: Available online 1 May 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Zeinhom M. ElBahy, Ahmed I. Hanafy, Salah M. ElBahyAbstractThe quest of new materials with higher catalytic activity and new biological applications does not end. Single and bimetallic nanoparticles (NPs)-supported NaY zeolite were prepared using NaBH4 as reducing agent. Platinum, copper and palladium NPs were prepared as single nanometals-supported NaY. Copper (inexpensive transition metal) was used as a common metal to prepare nano-bimetallic systems, namely, PtCuY and PdCuY. The samples were investigated by ICP, ...
Source: Journal of Environmental Chemical Engineering - May 2, 2019 Category: Chemistry Source Type: research

Mesoporous composite material for efficient lead(II) detection and removal from aqueous media
Publication date: Available online 29 April 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Md. Rabiul AwualAbstractA novel ligand based conjugate material (CMA) was prepared for toxic lead (Pb(II)) ion monitoring and removal from aqueous solution. The organic ligand of 6-((2-(2-hydroxy-1-naphthoyl)hydrazono)methyl)benzoic acid was successfully synthesized and then anchored onto the porous silica monolith. The CMA was enhanced the color upon addition of Pb(II) ion and the results were the evident of the one-step monitoring of wide-range Pb(II) concentrations without using the highly sophisticated appara...
Source: Journal of Environmental Chemical Engineering - May 1, 2019 Category: Chemistry Source Type: research

Biomass-based composite catalysts for catalytic wet peroxide oxidation of bisphenol A: preparation and characterization studies
Publication date: Available online 29 April 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Riikka Juhola, Anne Heponiemi, Sari Tuomikoski, Tao Hu, Hanna Prokkola, Henrik Romar, Ulla LassiAbstractThe wet granulation process was used to prepare new, efficient, and cost-effective granular biomass-based composite catalysts for catalytic wet peroxide oxidation (CWPO) of bisphenol A (BPA). The most stable composite granules was prepared by mixing biomass-based carbon residue (CR) with metakaolin (MK) combined with calcium oxide (CaO) or cement and a solvent (NaOH or KOH). For all the prepared composite granu...
Source: Journal of Environmental Chemical Engineering - May 1, 2019 Category: Chemistry Source Type: research