Artificial neural network-based surrogate modeling of multi-component dynamic adsorption of heavy metals with a biochar
Publication date: Available online 16 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): J. Moreno-Pérez, A. Bonilla-Petriciolet, D.I. Mendoza-Castillo, H.E. Reynel-Ávila, Y. Verde-Gómez, R. Trejo-ValenciaAbstractThis paper reports the application of four neural network surrogate models for the correlation and prediction of asymmetric breakthrough curves obtained from the multi-component adsorption of cadmium, nickel, zinc and copper ions on a biochar. Artificial neural networks namely: Feed forward back propagation neural network, Feed forward back propagation neural network wi...
Source: Journal of Environmental Chemical Engineering - August 16, 2018 Category: Chemistry Source Type: research

Experimental evaluation of crushed Moringa oleifera Lam. seeds and powder waste during coagulation-flocculation processes
Publication date: Available online 16 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Andrea C. Landázuri-Rojas, Juan S. Villarreal, Esteban Núñez, Marlon M. Pico, Andrés S. Lagos, Mario CaviedesABSTRACTMoringa oleifera (MO) Lam. seeds and MO powder waste (an available residue from oil-extracted MO cotyledon), available in the Ecuadorian coast region were investigated as natural coagulant-flocculant agents for drinking and wastewater treatment applications. The optimum particle size range of crushed moringa seeds without husk at a fixed dosage of 50 mg/L was eva...
Source: Journal of Environmental Chemical Engineering - August 16, 2018 Category: Chemistry Source Type: research

Enhanced Visible-Light-Driven Photodegradation of Rh-6G by Surface Engineered Pd-V2O5 Heterostructure Nanorods
Publication date: Available online 16 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Santhosh Kumar Jayaraj, Thangadurai ParamasivamAbstractDeveloping new photocatalysts for photodegradation of organic pollutants from the industries has become an important solution to water pollution. This work presents the improved photocatalytic performance of the surface engineered photocatalyst, Pd nanoparticles (NPs) decorated V2O5 heterostructure nanorods (Pd-V2O5), prepared by hydrothermal method. The Pd-V2O5 heterostructures contain orthorhombic structured V2O5 nanorods with their surface decorated with ...
Source: Journal of Environmental Chemical Engineering - August 16, 2018 Category: Chemistry Source Type: research

Hydrothermal carbonization: Temperature influence on hydrochar and aqueous phase composition during process water recirculation
Publication date: Available online 16 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Jakob Köchermann, Kati Görsch, Benjamin Wirth, Jana Mühlenberg, Marco KlemmAbstractHydrothermal carbonization (HTC) is a promising conversion technology for wet biogenic waste material. However, after HTC the process water (PW) is highly enriched with organics. By reutilization of PW, the amount of contaminated waste water can be strongly reduced. However, temperature influence on hydrochar and PW composition during PW recirculation was not examined yet. Therefore, municipal green waste (MGW) was ...
Source: Journal of Environmental Chemical Engineering - August 16, 2018 Category: Chemistry Source Type: research

Thermodynamic, Kinetic and Spectroscopic Investigation of Arsenite Adsorption Mechanism on Pine Cone-Magnetite Composite
Publication date: Available online 14 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Immaculate L.A. Ouma, Eliazer B. Naidoo, Augustine E. OfomajaAbstractAdsorptive removal of arsenite from wastewater often involves pre-oxidation to the less toxic arsenate followed by adsorption. Materials capable of simultaneous oxidation and adsorption could potentially improve the treatment of arsenic contaminated water. A novel magnetic composite consisting of Fenton’s treated pine cone, an agricultural waste and magnetite nanoparticles was prepared and applied to achieve simultaneous arsenite oxidatio...
Source: Journal of Environmental Chemical Engineering - August 15, 2018 Category: Chemistry Source Type: research

Feasibility of forward osmosis using ultra low pressure RO membrane and Glauber salt as draw solute for wastewater treatment
Publication date: Available online 14 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Supritam Dutta, Kaushik NathAbstractGlauber salt (sodium sulfate decahydrate, Na2SO4.10H2O) is presented as a viable draw solute in forward osmosis (FO) process for dewatering of textile wastewater and brackish water. A widely available, commercial, low cost ultra low pressure reverse osmosis membrane is used in a bench scale FO unit. Water flux of 7 L.m-2 h-1, 4.3 L.m-2 h-1 and 5.3 L.m-2 h-1 were obtained with DI water, synthetic wastewater and industrial wastewater fee...
Source: Journal of Environmental Chemical Engineering - August 15, 2018 Category: Chemistry Source Type: research

Electrochemical oxidation of paracetamol in water by graphite anode: Effect of pH, electrolyte concentration and current density
Publication date: Available online 15 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Selvendiran Periyasamy, Muthukumar MuthuchamyAbstractParacetamol is one of the micropollutant in water and most frequently used drugs as moderate pain reliever. These micropollutants are serious threat to human and environment. In the present investigation, we made attempt to degrade the electrochemical oxidation of paracetamol in water by graphite as anode. Electrooxidation behavior of paracetamol at graphite anode was tested by cyclic voltammetry technique performed in the potential range of -1.0 to +1.0&thins...
Source: Journal of Environmental Chemical Engineering - August 15, 2018 Category: Chemistry Source Type: research

Fabrication and characterization of cation exchange nanocomposite membranes comprising ABS/PC polymer blend with NiFe2O4 nanoparticles
Publication date: Available online 15 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Ali Reza Khodabakhshi, Saeid AsgariAbstractA new composite of polymers and nanoparticles was used to prepare heterogeneous cation exchange membranes, the blends of polycarbonate (PC) and acrylonitrile butadiene styrene (ABS) as binders, the cation exchange resin powder as functional group agents, and the NiFe2O4 nanoparticles as additive. The integration of nanomaterials showed synergistic effects when combined with this blend of materials. Nickel ferrite nanoparticles were synthesized using co-precipitation met...
Source: Journal of Environmental Chemical Engineering - August 15, 2018 Category: Chemistry Source Type: research

Synthesis of polyamide grafted carbon microspheres for removal of rhodamine B dye and heavy metals
Publication date: Available online 15 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Tawfik A. Saleh, Islam AliAbstractPolyamide branches grafted onto carbon microspheres (CMS) was successfully synthesized by interfacial polymerization of 1,3,5-trimesoyl chloride and 1,3-phenylene diamine in situ with CMS. The obtained CMS-polyamide was characterized by Fourier transform infrared spectroscopy, thermogravimetric analyzer, scanning electron microscopy and Energy-dispersive X-ray spectroscopy. The sorption efficiency of the CMS-polyamide was evaluated by using rhodamine B (RhB) dye-polluted solutio...
Source: Journal of Environmental Chemical Engineering - August 15, 2018 Category: Chemistry Source Type: research

Initial state of soil microbial communities determines their stress response
Publication date: Available online 15 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Wassila Riah-Anglet, Isabelle Trinsoutrot-Gattin, Marie-Paule Norini, Adrien Gauthier, Xavier Latour, Karine LavalAbstractThe relationships between microbial communities biodiversity and soil functions are difficult to identify. In most cases, the establishment of these links requires alteration of microbial communities. In this work, we deliberately chose to subject soils to an unrealistic dose of biocide (fungicide 1000 times the recommended dose) in order to modify soil microbial communities. Two different so...
Source: Journal of Environmental Chemical Engineering - August 15, 2018 Category: Chemistry Source Type: research

Assessment of the experimental conditions affecting natural oxidant demand of soil by permanganate
This study provides a broader perspective of the issues and concerns related to determining the permanganate natural oxidant demand of soil while evaluating the effects that initial oxidant concentration, soil to water ratio, and mixing have on the rate and extent of permanganate consumption. It was found that mixing conditions significantly influenced the kinetic expression of permanganate natural oxidant demand while soil to water ratios were not shown to have a significant effect as long as initial permanganate concentrations were sufficient to overcome the oxidant demand of the soil (i.e., were not limiting). (Source: ...
Source: Journal of Environmental Chemical Engineering - August 14, 2018 Category: Chemistry Source Type: research

The leachability study of iron-oxides from mine tailings in a hybrid of sulfate-chloride lixiviant
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Esmaeel Darezereshki, Ahmad Khodadadi Darban, Mahmoud Abdollahy, Ahmad Jamshidi-Zanjani, Ali Behrad Vakylabad, Sima MohammadnejadAbstractThis experimental study investigates the influence of H+ and Cl− ions on the leaching procedure of the iron ore tailings (IOT) using different lixiviants including various ratios of H2SO4/NaCl, and HCl. By using HYDRA/Spana software, the formed species of iron were identified as FeCl3, Fe(SO4)2− when using 5 M H2SO4/2 M NaCl, and FeCl3, FeCl2+ when util...
Source: Journal of Environmental Chemical Engineering - August 14, 2018 Category: Chemistry Source Type: research

Synthesis of novel surface functionalized electrospun PAN nanofibers matrix for efficient adsorption of anionic CR dye from water
In this study, we have synthesized polyacrylonitrile (PAN) nanofibers matrix by using simple and cost effective electrospinning method. The surface of the obtained PAN nanofibers matrix was chemically modified into different amino (-NH2) functional groups and used as novel nano-adsorbent towards the removal of anionic Congo red (CR) dye from aqueous media. Three different chemical procedures were adopted to synthesize three different -NH2 functionalized nanofibers matrix i.e. PAN-NH2, PAN-CONH2 and PAN-EDA (ethylenediamine). The -NH2 functionalized PAN nanofibers matrix were characterized by ATR-FTIR (Attenuated Total Refl...
Source: Journal of Environmental Chemical Engineering - August 14, 2018 Category: Chemistry Source Type: research

Effect of synthesis conditions on the morphology of mesoporous silica from elephant grass and its application in the adsorption of cationic and anionic dyes
This study showed the transformation of EG into highly efficient sorbents with desorption studies showing that adsorbents could be reapplied in adsorption.Graphical Abstract (Source: Journal of Environmental Chemical Engineering)
Source: Journal of Environmental Chemical Engineering - August 12, 2018 Category: Chemistry Source Type: research

Mechanistic insight into sorptive elimination of ibuprofen employing bi-directional activated biochar from sugarcane bagasse: Performance evaluation and cost estimation
Publication date: Available online 11 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Prasenjit Chakraborty, Sumona Show, Soumya Banerjee, Gopinath HalderABSTRACTThe present investigation attempts in separating Ibuprofen (IBP) a pharmaceutical compound from aqueous solution tooled with two different activated form of sugarcane biochar as adsorbent. Differences in adsorption capability of the sugancane biochar were derived after activating its surface both physically and chemically. Operational conditions viz., initial ibuprofen concentration (1-50 mg/L), contact time (0.5-24 hr), te...
Source: Journal of Environmental Chemical Engineering - August 12, 2018 Category: Chemistry Source Type: research

Accelerated carbonation of waste incinerator bottom ash in a rotating drum batch reactor
Publication date: Available online 11 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Felix Brück, Kevin Schnabel, Tim Mansfeldt, Harald WeigandAbstractAccelerated carbonation is known to improve the leaching behaviour and geotechnical properties of waste incineration bottom ash (BA). Regarding process implementation on the industrial scale dynamic reactor configurations may be particularly suited since they enhance the mass exchange between gas and solid. Here we evaluated the influence of fundamental parameters on accelerated carbonation of BA in a rotating drum batch reactor equipped with...
Source: Journal of Environmental Chemical Engineering - August 12, 2018 Category: Chemistry Source Type: research

Effect of Sn doping in ZnO on the photocatalytic activity of ZnO-Graphene nanocomposite with improved activity
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Rosalin Beura, P. ThangaduraiAbstractDevelopment of novel photocatalysts is necessary in environmental cleaning of industrial effluents by photocatalysis. The photocatalyst Sn ion doped (0 to 10 wt %) ZnO-graphene was synthesized by hydrothermal method. ZnO was formed with hexagonal wurtzite crystal structure. Band gap energy of the composite has decreased from 3.12 to 2.84 eV, whereas the photoluminescence lifetime has increased from 15.05 to 21.60 ns with Sn ion doping. Photocatalytic activ...
Source: Journal of Environmental Chemical Engineering - August 11, 2018 Category: Chemistry Source Type: research

Multi-component mathematical model based on mass transfer coefficients for prediction of the Zn and Cd ions biosorption data by E. densa in a continuous system
The objective of this study was to evaluate the biosorption dynamics of heavy metals by the dead macrophyte Egeria densa in fixed bed column. Experiments were conducted with mono- and bi-component solutions of Cd(II) and Zn(II) at pH 4.0, temperature of 30 °C and volumetric flow rate range between 2 and 6 cm3 min−1. A mass transfer mathematical model was applied for describing the mono-component biosorption dynamics. In this model, the equilibrium was represented by the batch Langmuir isotherm, and intraparticle diffusion was considered as the rate-limiting step for the mass transfer. The mas...
Source: Journal of Environmental Chemical Engineering - August 11, 2018 Category: Chemistry Source Type: research

Facile synthesis of ultra-thin CoxNi(1-x)/C nano-sheets and their remarkable catalytic properties in 4-nitrophenol reduction\
Publication date: Available online 10 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Yunlong Zhao, Baoyong Cao, Xiaopeng Wang, Xinyu Wang, Mohammad Al-Mamun, Huijun Zhao, Jide Wang, Yajie Zheng, Xintai SuAbstractThe mesoporous of ultra-thin CoxNi(1-x)/C nano-sheets (NSs) have been synthesized by a molten-salt calcination approach. The nanocrystalline, composition, morphology and structure of the hybrid nano-sheets are confirmed with phenetic analysis of XRD, EDS, XPS, TEM and SEM. The as-synthesized of CoxNi(1-x)/C NSs were obtained under varied temperature and ratio of Ni and Co, and the ultra-...
Source: Journal of Environmental Chemical Engineering - August 10, 2018 Category: Chemistry Source Type: research

Catalytic chemical reduction of nitrate from simulated groundwater using hydrogen radical produced on the surface of palladium catalyst supported on the magnetic alumina nanoparticles
Publication date: Available online 10 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Erfan Rahimi, Ghazal Sajednia, Majid Baghdadi, Abdolreza KarbassiAbstractIn this research, the performance of palladium catalyst coated on an efficient support, Fe3O4@Al2O3, was investigated for the removal of nitrate from groundwater in a catalytic chemical reduction process. The hydrogen gas was produced using an electrochemical cell with two graphite electrodes. The material characterization was performed using FE-SEM, TEM, XRD, and VSM analyses. The alumina coating had a considerable impact on the removal ef...
Source: Journal of Environmental Chemical Engineering - August 10, 2018 Category: Chemistry Source Type: research

Investigation of removal of crystal violet dye using novel hybrid technique involving hydrodynamic cavitation and hydrogel
Publication date: Available online 9 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Aman Raj, Bhaskar Bethi, Shirish H. SonawaneAbstractIn this work, intensification of removal of crystal violet (CV) dye in terms of total organic carbon (TOC) from aqueous media has been investigated by a novel hybrid treatment technique involving hydrodynamic cavitation (HC), and hydrogel adsorption. Hydrodynamic cavitation (HC) combined with poly-acrylamide (PAM) hydrogel nano-composite was studied for CV dye removal. TiO2 nano-particles embedded poly-acrylamide (PAM) nano-composite hydrogel was prepared by usi...
Source: Journal of Environmental Chemical Engineering - August 10, 2018 Category: Chemistry Source Type: research

Performance of Electro-Fenton Process for Phenol Removal Using Iron Electrodes and Activated Carbon
The objective of the present study was to investigate the efficacy of electro-Fenton (EF) oxidation process for the removal of phenol from synthetic wastewater (initial phenol concentration = 250 mg/L) under varying reaction conditions using iron electrodes. The lab scale EF runs were performed in a 1 L beaker placed on magnetic stirrer assembly. Maximum COD and TOC removals of ~84% and ~52%, respectively, were obtained within 30 min reaction at the following operating conditions: stoichiometric amount of H2O2 = 37.2 mM, pH = 5.2 (unadjusted), electrical conductivity&...
Source: Journal of Environmental Chemical Engineering - August 10, 2018 Category: Chemistry Source Type: research

Armoracia rusticana as Sustainable and Eco-friendly Corrosion Inhibitor for Mild Steel in 0.5M Sulphuric Acid: Experimental and Theoretical Investigations
Publication date: Available online 9 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Rajesh Haldhar, Dwarika Prasad, Akhil SaxenaAbstractThe current investigation presents the corrosion activity of Armoracia rusticana root extract in 0.5 M H2SO4 as a corrosive medium. This plant belongs to the Brassicaceae family. Weight loss measurements, Tafel polarization and electrochemical impedance spectroscopy (EIS) measurements have been done to check the inhibition efficiency. Ultraviolet-visible (UV), Fourier-transform infrared (FT-IR) spectroscopic techniques have been carried out to verify the ...
Source: Journal of Environmental Chemical Engineering - August 10, 2018 Category: Chemistry Source Type: research

Removal of dyes from aqueous solution by sorption with fly ash using a hydrocyclone
Publication date: Available online 8 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Gayatree Patra, Raja Barnwal, Sushanta K. Behera, B.C. MeikapAbstractMethyl orange is an anionic water-soluble carcinogenic azo dye. Excessive dye concentration in water is a major health concern worldwide. In this current study, experiments have been conducted to remove methyl orange from aqueous solution using fly ash as an adsorbent in a continuous mode by using a hydrocyclone. A spiral rib has been introduced in the cylindrical part of the conventional hydrocyclone to increase the performance and this hydrocy...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Remarkable Ti-promotion in vanadium doped anatase titania for methylene blue adsorption in aqueous medium
We report here the synthesis of vanadium (5–20 at.%) doped titania and the pristine oxides via surfactant assisted coprecipitation method using cetyltrimethylammonium bromide as the surfactant and investigated their adsorption behaviour towards hazardous methylene blue dye. The formation of anatase phase in all the doped materials is confirmed by the powder x-ray diffraction (P-XRD) analysis as corroborated by the Fourier transform-infrared (FT-IR) analysis, with particle sizes in the range 8–11 nm. Pure titania doesn’t show any adsorption property, but its presence enhances the adsorption property...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Immobilization of citric acid and magnetite on sawdust for competitive adsorption and extraction of metal ions from environmental waters
Publication date: Available online 8 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Amjad H. El-Sheikh, Ismail I. Fasfous, Rawan M. Al-Salamin, Alan P. NewmanAbstractA promising new biosorbent with potential applications in both environmental monitoring and treatment is citric acid-coated magnetic sawdust. In this work, this product was prepared and compared with citric acid-coated magnetite in terms of surface characteristics, adsorption and suitability for magnetic solid phase extraction (MSPE) of Cu(II), Co(II) and Zn(II) in water. Five adsorbents were prepared: magnetite (Mag), citric acid-c...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

2, 4-dinitrotoluene (DNT) and 2, 4, 6-trinitrotoluene (TNT) removal kinetics and degradation mechanism using zero valent iron-silica nanocomposite
Publication date: Available online 8 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Nivedita Shukla, Vatsana Gupta, Ashok Singh Rawat, Vikas Kumar Gahlot, Sarita Shrivastava, Pramod Kumar RaiAbstractMagnetic zero valent iron – silica nanocomposite (Fe/SiO2) was synthesized using sol – gel technique followed by in-situ hydrogen reduction. The prepared nanocomposite was characterized by Nitrogen-Brunner Emmett Teller (N2-BET) isotherm studies, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Vibrating Sample Magnetometer (VSM) tech...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Cadmium removal by a low-cost magadiite-based material: characterization and sorption applications
Publication date: Available online 8 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Keltoum Attar, Djamila Bouazza, Hafida Miloudi, Abdelkader Tayeb, Anne Boos, Ana M. Sastre, Hary DemeyAbstractThe sorption of cadmium from nitrate medium at room temperature was carried out using solid phase magadiite and magadiite impregnated with Cyanex 272 [bis(2,4,4-trimethylpentyl)phosphinic acid]. The sorbent materials have been characterized by X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR), scanning electron microscopy-energy dispersive X-ray analyses (SEM-EDX) and thermogravim...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Sorptive removal of enrofloxacin antibiotic from aqueous solution using a ligno-cellulosic substrate from wheat bran
In this study, the sorption properties of a ligno-cellulosic substrate derived from wheat-bran, an agricultural by-product, were investigated in order to test its ability to remove enrofloxacin fluoroquinolone antibiotic from water. The influence of contact time, pH and concentration was studied. The pH value played an important role in the adsorption process, evidencing different sorption processes as a function of pH. The results showed that the substrate removed 100% of enrofloxacin at pH 6 in less than one hour and more than 80% above pH 4. Three kinetic (pseudo-first order, pseudo-second order and intra-particle diffu...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Adsorptive removal of emerging pollutants from groundwater by using modified titanate nanotubes
Publication date: Available online 8 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Carolina Orona-Návar, Raul García-Morales, Rodrigo Rubio-Govea, Jürgen Mahlknecht, Raul I. Hernandez-Aranda, Juan Gabriel Ramírez, K.D.P. Nigam, Nancy Ornelas-SotoAbstractThe increasing presence of chemicals and pharmaceuticals in rivers, lakes and groundwater among others, represents a latent threat both to ecosystems and to human health. Conventional treatment methods for water hardly eliminate these pollutants, which are usually dissolved in low concentrations (µgL-1 or ngL-1). ...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Review of Metal (Hydr)oxide and Other Adsorptive Materials for Phosphate Removal from Water
Publication date: Available online 8 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Ruiting Liu, Lina Chi, Xinze Wang, Yanming Sui, Yuan Wang, Hamidreza ArandiyanAbstractEutrophication, a worldwide problem, threatens the ecology of freshwater bodies and marine environments. However, the control of nutrients, especially phosphate in water bodies and contaminated sediments, poses major technical and economic challenges. Today, various attempts have been made to investigate a cost-effective way to have phosphate control. Among the various techniques applied to remove phosphate, the process of adsor...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Adsorption of Thiosulphate, Trithionate, Tetrathionate Using Biomass Ash/Char
Publication date: Available online 7 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Bhagya M.K. Range, Kelly A. HawboldtAbstractAsh from combustion of biomass represents a disposal challenge for pulp and paper mills and therefore studied as potential adsorbent to treat industrial waste streams (e.g. metals, sulfate). Thiosalts are common, with sulfate, in sulphide ore mining effluents, but recalcitrant to traditional treatment. Ash from three different sources was assessed for adsorption of thiosalts, adsorbent capacities varied from 24-48 mg thiosalt/g ash (~32% removed). Low pH favoured...
Source: Journal of Environmental Chemical Engineering - August 8, 2018 Category: Chemistry Source Type: research

Degradation of reactive green dye and textile effluent by Candida sp. VITJASS isolated from wetland paddy rhizosphere soil
Publication date: Available online 7 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Astha Sinha, Sajitha Lulu S., Vino S., Sohini Banerjee, Sayanti Acharjee, W. Jabez OsborneAbstractPollution by the release of dye containing wastewater has been alarming worldwide. Biodegradation of reactive green dye and textile effluent by Candida sp. VITJASS was investigated in dynamic condition. Paddy rhizosphere yeast Candida sp. VITJASS showed 84% removal of reactive green dye and 75% reduction in ADMI of textile effluent with a considerable synthesis of oxido-reductase enzymes. The degraded products were a...
Source: Journal of Environmental Chemical Engineering - August 7, 2018 Category: Chemistry Source Type: research

Sustainable bioremediation of sugarcane vinasse using autochthonous macrofungi
This study proposes that Pycnoporus sp. P6 and Trametes sp. T3 could be used in the design of cutting-edge sustainable biotechnological processes to remedy vinasse, simultaneously synthesizing oxidative enzymes, in an environmentally friendly way.Graphical Abstract (Source: Journal of Environmental Chemical Engineering)
Source: Journal of Environmental Chemical Engineering - August 7, 2018 Category: Chemistry Source Type: research

Natural polysaccharides and microfluidics: A win–win combination towards the green and continuous production of long-term stable silver nanoparticles
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Antonella Giorello, Esteban Gioria, Jose L. Hueso, Victor Sebastian, Manuel Arruebo, Carolina Veaute, Laura GutierrezAbstractThe present work combines the use of microfluidic reactors and green chemicals such as glucose and starch to achieve a continuous production of silver nanoparticles that have been successfully tested as excellent antibacterial agents against Escherichia coli. Those silver nanoparticles synthesized under continuous flow remained stable in terms of optical response, morphology and size distri...
Source: Journal of Environmental Chemical Engineering - August 5, 2018 Category: Chemistry Source Type: research

Performance assessment of the stacked microbial desalination cells with internally parallel and series flow configurations
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Ali Ziaedini, Hamid Rashedi, Ebrahim Alaie, Majid ZeinaliAbstractPerformances of five phenol-powered stacked microbial desalination cells (sMDC) with internally parallel and series continuous flow configurations were assessed. The effects of inter-membrane distance (5 and 10 mm) and flow configuration on water desalination were investigated in order to improve the flexibility and footprint of the system. Different sMDC configurations were examined with influent NaCl concentrations of 1–3% at flow rat...
Source: Journal of Environmental Chemical Engineering - August 5, 2018 Category: Chemistry Source Type: research

Leaching Kinetics of Vanadium from Calcification Roasting Converter Vanadium Slag in Acidic Medium
Publication date: Available online 3 August 2018Source: Journal of Environmental Chemical EngineeringAuthor(s): Hao Peng, Jing Guo, Xiaogang Zheng, Zuohua Liu, Changyuan TaoAbstractAcid leaching technology was introduced to leach out vanadium from calcification roasting converter vanadium slag. The effects of solid-to-liquid ratio, concentration of acid solution, reaction temperature, reaction time and particle size on leaching efficiency of vanadium were examined. A new defined parameter, encapsulation efficiency, was applied to describe the leachate loss in the filtration process. Results showed that the leaching efficie...
Source: Journal of Environmental Chemical Engineering - August 4, 2018 Category: Chemistry Source Type: research

Application of manganese oxides under anoxic conditions to remove diclofenac from water
This study focuses on the potential of applying manganese oxides (MnO2) under anoxic conditions (absence of oxygen) to remove diclofenac (DFC). By investigating parameters that are important for application, including temperature, MnO2: DFC molar ratio, and co-solutes, the DFC removal potential is evaluated in terms of efficiency and observed initial kinetics (kobs,init). Four commonly-used kinetic models are compared in this study and the best fitting one is employed. Overall, DFC removal and kobs,init both increase upon changing temperature from 10 to 30 °C and both decrease after further increasing temperature to ...
Source: Journal of Environmental Chemical Engineering - August 3, 2018 Category: Chemistry Source Type: research

Synthesis of N-doped Mesoporous TiO2 by Facile One-step Solvothermal Process for Visible Light Photocatalytic Degradation of Organic Pollutant
In conclusion, facile modifications introduced in this research proved to bring constructive effect, establishing better photocatalyst with effective utilization of visible light and also simple to retrieve catalyst.Graphical abstract (Source: Journal of Environmental Chemical Engineering)
Source: Journal of Environmental Chemical Engineering - August 3, 2018 Category: Chemistry Source Type: research

Biosorption study of cadmium, lead and zinc ions onto halophilic bacteria and reduced graphene oxide
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Manasi, Vidya Rajesh, N. RajeshAbstractA halophilic bacteria Halomonas BVR 1 in conjunction with reduced Graphene Oxide (rGO) was used as an adsorbent to remove lead, cadmium and zinc from aqueous solutions. The biosorbent surface characterization was done through FT-IR, SEM-EDAX and XRD studies. Adsorption was thermodynamically feasible and it supported the pseudo second order kinetics. Studies show that cadmium obeyed a monolayer kind of adsorption phenomenon following the Langmuir isotherm. Adsorption of lead ...
Source: Journal of Environmental Chemical Engineering - August 2, 2018 Category: Chemistry Source Type: research

Development of an eco-friendly method for the determination of total polychlorinated biphenyls in solid waste by gas chromatography-mass spectrometry
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Leila D. Mendes, Morgana Frena, Luiz A.S. Madureira, Pablo Richter, Milton Rosero-Moreano, Eduardo CarasekAbstractA simple and efficient solvent-free method for the quantification of total polychlorinated biphenyls (PCBs) in solid waste matrices by gas chromatography-mass spectrometry is proposed. Solid waste matrices spiked with Aroclor 1242 and Aroclor 1254 were used in this study. In this new approach, the cavity of the rotating disk device is loaded with the solid waste sample and water is used as leaching so...
Source: Journal of Environmental Chemical Engineering - August 2, 2018 Category: Chemistry Source Type: research

A versatile approach to the synthesis of biomass derived from furfural residues as a potential adsorbent
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Shuxian Bi, Wanyi Liu, Caihong Wang, Haijuan ZhanAbstractHerein, we report a simple and effective strategy to synthesize biomass from low-cost and resource sustainability furfural residues (FRs) using one-pot hydrothermal synthesis. Furthermore, due to their typically good chemical stability, and great using of waste materials, the high removal efficiency of tetracycline (TC) and oxytetracycline (OTC) antibiotics were determined by adsorption tests. The biomass exhibited improvement in adsorption rate (38.74% to ...
Source: Journal of Environmental Chemical Engineering - August 2, 2018 Category: Chemistry Source Type: research

Physicochemical properties of new cellulose-TiO2 composites for the removal of water pollutants: Developing specific interactions and performances by cellulose functionalization
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Hesham Hamad, Esther Bailón-García, Sergio Morales-Torres, Francisco Carrasco-Marín, Agustín F. Pérez-Cadenas, Francisco J. Maldonado-HódarAbstractCellulose-TiO2 composites are developed using microcrystalline cellulose (MCC). The closed MCC structure was solubilized by liquid-phase treatments with nitric (HNO3) or phosphoric acids (H3PO4) to improve the TiO2-dispersion. These pretreatments simultaneously generate different types of oxygen and phosphorus functionalities o...
Source: Journal of Environmental Chemical Engineering - August 1, 2018 Category: Chemistry Source Type: research

Stability, interparticle interactions and catalytic performance of gold nanoparticles synthesized through ionic liquid mediated oil palm leaves extract
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Muhammad Irfan, Muhammad Moniruzzaman, Tausif Ahmad, Ola Yahia Osman, Pradip Chandra Mandal, Sekhar Bhattacharjee, Murid HussainAbstractThe particles size is an influential factor to control the optical, physicochemical, and electronic properties of gold nanoparticles (AuNPs). Any variation in the particles size can change these properties that not only confine the scope of AuNPs but also diminish the colloidal stability of solution. In this work, AuNPs are synthesized using ionic liquid mediated oil palm leaves ...
Source: Journal of Environmental Chemical Engineering - July 31, 2018 Category: Chemistry Source Type: research

Treatment of olive mill wastewater using ozonation followed by an encapsulated acclimated biomass
In this study, an ozone pretreatment combined with a fixed biomass bio-treatment using the Small Bioreactor Platform (SBP) capsules technology encasing a pure culture of a phenol-degrading OMWW isolate named Delftia EROSY was implemented to reduce phenolic compounds and organic matter in OMWW.Up to 90% of tannic acid (TA), a synthetic phenol model, was removed after the ozonation and biological stages. Ozone pretreatment of TA expedites the biological process by decreasing the time needed for the biodegradation of phenols.Ozonation (ozone dose = 765 mg L−1 O3) of OMWW demonstrated 20% COD and 61% total phenol...
Source: Journal of Environmental Chemical Engineering - July 31, 2018 Category: Chemistry Source Type: research

Microbial induced calcium carbonate precipitation at elevated pH values (>11) using Sporosarcina pasteurii
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): J. Henze, D.G. RandallAbstractWe have shown, for the first time, that stabilized synthetic urine can be used to facilitate a microbial induced calcium carbonate precipitation reaction at elevated pH values. Stabilized urine is mixed with sand and urease-producing bacteria. The bacteria convert the urea present in the urine to carbonate ions, which then combine with excess calcium ions to form calcium carbonate. This calcium carbonate cements any sand particles together, thus forming a bio-solid of any shape. The ...
Source: Journal of Environmental Chemical Engineering - July 28, 2018 Category: Chemistry Source Type: research

Methylene Blue dye sorption by hybrid materials from technical lignins
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Tetyana M. Budnyak, Selda Aminzadeh, Ievgen V. Pylypchuk, Dariusz Sternik, Valentin A. Tertykh, Mikael E. Lindström, Olena SevastyanovaAbstractNew hybrid sorbents were synthesized from technical lignins and silica and were applied for the removal of Methylene Blue dye (MB) from aqueous solution. Kraft softwood lignins from LignoBoost (LBL) and CleanFlowBlack (CFBL) processes were used to understand the influence of molecular weight and functionality of initial lignins on the properties of the final hybrids. ...
Source: Journal of Environmental Chemical Engineering - July 27, 2018 Category: Chemistry Source Type: research

Assessment of Mercury biosorption by Saccharomyces cerevisiae: Response surface methodology for optimization of low Hg (II) concentrations
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Mohammad Rasoul Hadiani, Kianoush Khosravi-Darani, Nahid Rahimifard, Habibollah YounesiAbstractThe potential of Saccharomyces cerevisiae for bioremoval of low concentrations of Hg2+ ions at ppb level in aqueous solutions was investigated. The effects of biomass, initial pH-value and initial Hg concentration on the removal efficiency of yeast were studied, and these parameters were optimized by central composite design. Verification of Hg2+ removal data was accomplished based on analytical quality assurance before...
Source: Journal of Environmental Chemical Engineering - July 27, 2018 Category: Chemistry Source Type: research

Ethyl esters from waste oil: Reaction data of non-catalytic hydroesterification at pressurized conditions and purification with sugarcane bagasse ash
Publication date: August 2018Source: Journal of Environmental Chemical Engineering, Volume 6, Issue 4Author(s): Jhessica Marchini Fonseca, Lúcio Cardozo-Filho, Joel Gustavo Teleken, Camila da SilvaAbstractThe reaction data of hydroesterification of waste oil, under pressurized conditions, were collected and the adsorption of compounds from ester mixture by sugarcane bagasse ash was evaluated. The reactions were conducted in a continuous reactor to evaluate of the effect of temperature and residence time. In the hydrolysis, the evaluated variables promoted an increase in free fatty acid (FFA) formation. However, at t...
Source: Journal of Environmental Chemical Engineering - July 27, 2018 Category: Chemistry Source Type: research

α-Amino acid assisted facile synthesis of two-dimensional ZnO nanotriangles for removal of noxious pollutants from water phase
This article reports the synthesis of two dimensional ZnO nanotriangles having dimensions of ∼160–400 nm height and ∼170–420 nm edge length via microwave irradiation technique using aminoacid arginine as capping/complexing agent. The ZnO nanotriangles were characterized using TEM, SAED, XRD and FTIR spectroscopy. The optical properties of ZnO nanotriangles were investigated using UV–vis and PL spectroscopy. The catalytic properties of as-synthesized ZnO nanotriangles were studied for the removal of toxic pollutants from aqueous phase. ZnO nanotriangles were successfully used as a catalyst/phot...
Source: Journal of Environmental Chemical Engineering - July 27, 2018 Category: Chemistry Source Type: research