Evaluating changes in microbial population and earthworms weight during vermicomposting of cow manure containing co-trimoxazole
ConclusionsAccording to the results, earthworms could be active in cow manure vermicomposting including 10-100  mg/kg concentration of co-trimoxazole antibiotic. The vermicomposting seems to be an effective method for reducing fecal coliforms and parasites in cow manure. As well, co-trimoxazole in common concentration could not have any effects on the ability of earthworms. At the end of the vermicomposting , all parameters were placed within the ICS (National) - Grade 1. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 21, 2020 Category: Environmental Health Source Type: research

Urinary concentrations of parabens amongst Iranian adults and their associations with socio-demographic factors
ConclusionsOur findings indicated that Iranians are widely exposed to the parabens and the range of exposure was associated with socio-demographic factors. These results could serve as a basis for assessing the risk of exposure to parabens amongst Iranians. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 19, 2020 Category: Environmental Health Source Type: research

Exposure to heavy metal contamination and probabilistic health risk assessment using Monte Carlo simulation: a study in the Southeast Iran
AbstractThe rice contamination to heavy metals and its associated health risks have been less addressed in the southeast of Iran. In the present study, in the mentioned region, we assessed the concentration of nine elements in rice, and the health risk related to the measured elements was determined using the data which were gathered by a questionnaire. For this purpose, 36 samples of the 12 most widely consumed rice brands were collected. Using ICP-MS, the concentrations of Ni, Cr, Hg, Sr, Mn, Fe, Se, Ba, and Zn were measured in the studied samples as 0.599  ± 0.124, 0.483 ± 0.28,...
Source: Journal of Environmental Health Science and Engineering - September 17, 2020 Category: Environmental Health Source Type: research

Microbiological analysis of bacterial and fungal bioaerosols from burn hospital of Yazd (Iran) in 2019
ConclusionConsidering that the burn wounds represent a susceptible site for opportunistic microorganisms, even low concentration of fungi/bacteria in air can be considered as arisk factor that facilitates transmission of the infectious agents in the hospital. Therefore, control measures should be taken to reduce the infection hazard in health staff and patients. These measures include ensuring effective ventilation, cleaning and decontaminating surfaces and equipment, restricting the personnel and patient companions ’ movement across the wards. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 17, 2020 Category: Environmental Health Source Type: research

Magnetic carnosine-based metal-organic framework nanoparticles: fabrication, characterization and application as arsenic adsorbent
This study centers on the controllable synthesis, characterization, and application of a novel magnetic bio-metal-organic framework (Bio-MOF) for the adsorption and subsequent removal of arsenic from aqueous solutions. Zinc ions and carnosine (Car) were exploited to construct the Car-based MOF on the surface of magnetite (Fe3O4 NPs). The Magnetite precoating with Car led to an increase in the yield and the uniform formation of the magnetic MOF. The prepared magnetic Bio-MOF nanoparticles (Fe3O4-Car-MOF NPs) had semi-spherical shape with the size in the range of 35 –77 nm, and the crystalline pattern of both magn...
Source: Journal of Environmental Health Science and Engineering - September 16, 2020 Category: Environmental Health Source Type: research

Evaluating the performance of coupled MFC-MEC with graphite felt/MWCNTs polyscale electrode in landfill leachate treatment, and bioelectricity and biogas production
ConclusionThis study found that the MFC-MEC coupled system had promising potential for strong wastewaters treatment, such as the leachate of landfill; and the in-site use of generated electricity and the production of useful fuels such as biogas. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 16, 2020 Category: Environmental Health Source Type: research

Applicability of an anionic-nonionic surfactant in p-cresol contaminated soil washing: Finding the optimal mixing ratio
In this study, the parameters influencing p-cresol removal efficiency in soil washing method were investigated. Primarily, extraction efficiencies of three Tween series surfactants (Tween 20, Tween 60, Tween 80) with 10  mM concentration were compared. Tween 80 showed the best results since its value (55%) was 4% and 13% higher than that of Tween 60 and Tween 20. The impact of mixed surfactant on extraction rate was examined by employing a mixture of Tween 80 and one anionic surfactant (sodium dodecyl sulfate) wit h different molar ratio as the main washing solution. The results denoted that the molar ratio of 3:2 (SD...
Source: Journal of Environmental Health Science and Engineering - September 15, 2020 Category: Environmental Health Source Type: research

Monitoring of airborne asbestos fibers in an urban ambient air of Mashhad City, Iran: levels, spatial distribution and seasonal variations
The objectives of this study were to monitor the levels of asbestos fibers in ambient air of Mashhad, Iran during 2018, and to draw its Geographic Information System (GIS) distribution map for the city. In this descriptive study, 13 sampling points in Mashhad city were chosen. Sampling of asbestos was carried out for 3 hour during summer and winter at 2018. Sampling of asbestos was performed using MCE (Mixed Cellulose Ester) membrane filters (pour size 0.45  µm; diameter: 25 mm) and cassette holder and peripheral pump. The samples were the analyzed by the phase contrast microscopy (PCM) method (NIOSH7400). ...
Source: Journal of Environmental Health Science and Engineering - September 14, 2020 Category: Environmental Health Source Type: research

A novel stochastic wastewater quality modeling based on fuzzy techniques
This study presents new methods for the identification of outlier data and smoothing as an effective pre-processing technique prito to modelling. This new data processing method uses a combination of the autoregressive integrated moving average (ARIMA) model and -the adaptive neuro fuzzy inference system with fuzzy C-means clustering (FCM) (ANFIS-FCM). These new pre-processing methodsare compared to previously employed non-linear approaches for modelling of wastewater influent/effluent 5-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and total suspended solids (TSS). Linear modelling of each parameter, ...
Source: Journal of Environmental Health Science and Engineering - September 14, 2020 Category: Environmental Health Source Type: research

“Bacterial consortium from hydrothermal vent sediments presents electrogenic activity achieved under sulfate reducing conditions in a microbial fuel cell”
ConclusionsIt was demonstrated that microorganisms prevenient from hydrothermal vent sediments adapted to a microbial fuel cell system are able to generate electricity coupled to 74.3  ± 1.5 and 75.3 ± 9.6% of SR and COD removal respectively, with a mixture of acetate – butyrate. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 11, 2020 Category: Environmental Health Source Type: research

Tehran environmental and neurodevelopmental disorders (TEND) cohort study: Phase I, feasibility assessment
ConclusionOur findings suggest that hospitals were better places for recruitment of subjects in a birth cohort in Tehran. We further concluded that birth cohort study recruitment can be improved by choosing appropriate gestational ages. Obtaining the newborn ’s urine, meconium, and umbilical cord blood were challenging procedures and require good collaboration between hospital staff and researchers. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 9, 2020 Category: Environmental Health Source Type: research

Cost-effective synthesis and characterization of CuO NPs as a nanosize adsorbent for As (III) remediation in synthetic arsenic-contaminated water
In this study, synthetic arsenic-contaminated water was prepared in the laboratory with varying concentrations of arsenic (100 to 1000  μg/L) and treated by nanosize adsorbent (copper oxide nanoparticles (CuO NPs)). The colloidal and powder form of CuO NPs were synthesized in the laboratory by the hydrothermal technique on a large scale and their shape and size were confirmed by XRD, FTIR, FESEM, and HRTEM analysis. It was found 30 ± 2 nm as size and spherical shape. The equilibrium adsorption of As (III) occurred at 90 min of contact time, pH 7.5, and 4 g/L adsorbent dosage...
Source: Journal of Environmental Health Science and Engineering - September 8, 2020 Category: Environmental Health Source Type: research

Linearized form effect on estimation adsorption parameters of three industrial dyes by lignocellulosic sorbent
ConclusionIn summary, the effect of linear forms used either in the medellization of isotherms or kinetic data is significant in the prediction of adsorption parameters, also brewery waste has a significant B-Y dye adsorption affinity compared to others dyes, the descending order of maximum adsorption capacity finding is: qe  = 209 mg/g for B-Y, qe = 152 mg/g for B-R and finally qe = 108 mg/g for B-B. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 8, 2020 Category: Environmental Health Source Type: research

Catalytic potential of CuFe 2 O 4 /GO for activation of peroxymonosulfate in metronidazole degradation: study of mechanisms
AbstractApplication of magnetite nanoparticles (CuFe2O4/GO) were anchored on graphene oxide (GO), as a Heterogeneous nanocomposite for activating of peroxymonosulfate (PMS) into Metronidazole (MNZ) destruction. The effect of solution pH, reaction time, effectiveness of water matrix components and trapping factors, different catalyst concentrations, PMS and contaminants were evaluated as operating factors on the efficiency of MNZ degradation. Also, mineralization, stability, reactivity and Recycling tests of the catalyst, and the degradation kinetics were performed. MNZ degradation and mineralization were obtained under opt...
Source: Journal of Environmental Health Science and Engineering - September 7, 2020 Category: Environmental Health Source Type: research

Effect of hydrophilic silica and dual coagulation bath on structural and mechanical properties of PVDF membrane for membrane distillation
In this study, the synergetic effect of SiO2 nanoparticles as well as employing the dual coagulation bath on physical and mechanical properties of Polyvinylidene Fluoride (PVDF) flat-sheet membranes produced by dry-wet phase inversion (DIPS) technique has been investigated. The results of microstructural analysis using Scanning Electron Microscope (SEM) demonstrated that by adding nanoparticles while the pore size decreased noticeably, the percentage of porosity significantly increased. Also, it has been revealed that by utilizing isopropanol as the first coagulation bath the finger-like macro-voids became smaller in size,...
Source: Journal of Environmental Health Science and Engineering - September 6, 2020 Category: Environmental Health Source Type: research

Relationship between international tourism and concentrations of PM 2.5 : an ecological study based on WHO data
AbstractTourism is regarded as a major global industry. Given the importance of identifying factors affecting the tourism industry and attracting international tourists, the present ecological study explored the impact of environmental pollution on the number of international tourists arrival using concentrations of PM2.5 (particulate matter 2.5  μm or less in size) in a multivariate framework under the context of 190 countries. Using panel data from 190 countries, the author explored the data on the number of international tourists arriving in countries in 2017 extracted from the World Bank (WB) website, and obtai...
Source: Journal of Environmental Health Science and Engineering - September 3, 2020 Category: Environmental Health Source Type: research

Influences of chemically controlled Ca-bearing minerals in chitosan on Pb 2+ removal efficiency
This study investigated to the influences of chitin with different purities on the HM removal of corresponding chitosan. Sea shrimp waste was used as raw materials and Pb2+ was used as target HM. The results of orthogonal experimental analysis showed that only acid concentration played an important role in the deproteinization and demineralization processes of the chitin preparation under HCl, H2SO4 and CH3COOH treatment. Ca-bearing minerals (CBM) but not free –NH2 group of chitosan played a major role in the removal of Pb2+ from solution. Partly purified chitosan mainly removed Pb2+ by precipitation and then biosorp...
Source: Journal of Environmental Health Science and Engineering - September 2, 2020 Category: Environmental Health Source Type: research

Study of littered wastes in different urban land-uses: An 6 environmental status assessment
AbstractLittered waste is a severe environmental problem. Although there have been many studies on wastes littered in the environments like beaches and seas, there is insufficient information on littered wastes in the urban settings. In this research, employing visual survey by the field litter counts method, littered wastes in six urban land uses in Qazvin, Iran were studied. The results showed that administrative and recreational land uses, by an average of 5.22 and 9.59 items per 100  m, respectively, had the lowest pollution, while low-density commercial land use had the maximum pollution by 185.96 items per 100&n...
Source: Journal of Environmental Health Science and Engineering - August 31, 2020 Category: Environmental Health Source Type: research

Formulation and characterization of nanoemulsion from Alhagi maurorum essential oil and study of its antimicrobial, antibiofilm, and plasmid curing activity against antibiotic-resistant pathogenic bacteria
AbstractNanoemulsion technology is an alternative candidate to overcome antibiotic resistance in pathogenic bacteria. The aim of this research was nanoemulsion production from the essential oil ofAlhagi maurorum and the characterization of this nanostructure. Nanoemulsion of essential oil fromA. maurorum was prepared using the ionotropic gelation method and chitosan as a nano-carrier. Scanning Electron Microscopy (SEM) was used to characterize the synthesized nanoparticles. The effect of nanoemulsion on the antibacterial, antibiofilm, and plasmid curing of six antibiotic-resistant pathogenic bacteria (P. aeruginosa, E. col...
Source: Journal of Environmental Health Science and Engineering - August 31, 2020 Category: Environmental Health Source Type: research

Catalytic peroxidation of acrylic acid from aqueous solution incorporated with highly active La 0.5 Sr 0.5 BO 3 (B=Cu, Fe and Ni) perovskite-like catalysts
AbstractIn the current study, catalytic behaviour of La0.5Sr0.5BO3 (B=Cu, Fe and Ni) perovskite-like catalysts synthesized by sol-gel method were examined in catalytic peroxidation of acrylic acid as a model organic compound and further characterized by X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) with energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The effect of various parameters such as catalyst dose, H2O2/acrylic acid molar ratio, temperature, pH and initial acrylic acid concentration on acry...
Source: Journal of Environmental Health Science and Engineering - August 26, 2020 Category: Environmental Health Source Type: research

PM 2.5 -associated bacteria in ambient air: Is PM 2.5 exposure associated with the acquisition of community-acquired staphylococcal infections?
This study aimed to obtain knowledge about the concentration of airborne bacteria as well as staphylococci associated with particulate matter with a diameter of less than 2.5 micrometers (PM2.5) in ambient air. The impact of meteorological factors including ultraviolet (UV) index, wind speed, temperature, and moisture on microbial concentrations was also investigated. Quartz filters were used to collect PM2.5 and associated bacteria in ambient air of a semiarid area. Airborne bacteria were quantified by culture method andStaphylococcus species identified by molecular methods. The mean (SD) concentration of PM2.5 and airbor...
Source: Journal of Environmental Health Science and Engineering - August 22, 2020 Category: Environmental Health Source Type: research

Ceramic membrane-based ultrafiltration combined with adsorption by waste derived biochar for textile effluent treatment and management of spent biochar
ConclusionsThe overall study showed potential of the proposed process towards treatment of toxic dye loaded textile effluent in an environment friendly and sustainable approach. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - August 19, 2020 Category: Environmental Health Source Type: research

Diversity of halophilic and halotolerant bacteria in the largest seasonal hypersaline lake (Aran-Bidgol-Iran)
ConclusionThe PCR-RFLP analyses suggested that ARDRA possess a functional potential for distinguishing halophilic bacteria to be used for further studies in elementary steps of isolation to reduce the tedious duplication of isolates. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - August 11, 2020 Category: Environmental Health Source Type: research

Innovative solution to enhance the Helmholtz resonator sound absorber in low-frequency noise by nature inspiration
AbstractSound absorbing elements commonly used to make quieter spaces are very desirable for high-frequency noise control. It is more attractive if it is possible to produce sound absorbing structures that perform well for a wide frequency range, especially in low-frequencies. In this regard, Helmholtz resonator array is a well-known structure but the maximum performance of each resonator unit in an array panel can only be achieved at resonance frequency that is dependent on its size. Therefore, a resonator array panel with equal size units has insufficient performance in a wide frequency range. Hence, the consideration of...
Source: Journal of Environmental Health Science and Engineering - August 10, 2020 Category: Environmental Health Source Type: research

Investigation of fungal contamination in indoor air and on surfaces of traditional public baths in a historical city
AbstractIt has been proven that exposure to bioaerosols is associated with several health effects, such as pulmonary diseases and allergies. The present cross-sectional study was aimed to investigate fungal contamination in indoor air and on the surfaces of four traditional baths in Shiraz, Iran, one of the most historical cities in the world. Samples were taken from indoor air, using a microbial air sampler, as well as the surfaces of the shower, hallway, and dressing rooms of studied baths for 3  months. Totally 180 samples, including 45 air and 135 surfaces samples, were collected from studied baths. The concentrat...
Source: Journal of Environmental Health Science and Engineering - August 5, 2020 Category: Environmental Health Source Type: research

Zeolite-intermittent cycle moving bed air-lift bioreactor (Zeo-ICMBABR) for composting leachate treatment; simultaneous COD, nitrogen and phosphorous compounds removal
In this study, simultaneous removal of COD, nitrogen, and phosphorus compounds from anaerobically pretreated composting leachate investigated by using an intermittent cycle moving bed airlift bioreactor (ICMBABR) supported by zeolite as a biofilm. The efficiency of COD, Total Kjeldahl Nitrogen (TKN), and phosphorous removal and contaminants profile during the process, and the mass balances were analyzed. A multilayer design used for the experimental design, and the effect of four variables including hydraulic retention times (4, 6, 8  h), the zeolite ratios (20, 35, 50%), the influent COD concentration (1, 2, and 3&nb...
Source: Journal of Environmental Health Science and Engineering - August 2, 2020 Category: Environmental Health Source Type: research

Spatio-temporal variations of airborne bacteria from the municipal wastewater treatment plant: a case study in Ahvaz, Iran
This study aimed to investigate the seasonal changes and spatial distributions of airborne bacteria around different parts of Ahvaz WWTP, the capital city of Khuzestan Province, Iran, over 4  months in the cold and warm seasons. Samples were collected from 2 and 10-m intervals of grit chamber (GCh), primary sludge dewatering basin (PSDB), aeration tank (AT), as well as 60-m upstream (US) and downstream (DS) of the WWTP. Further, bacteria in the indoor air of administrative building (AB) of WWTP were investigated. Bioaerosols were collected by passive sampling method. The total bacteria count was 105.3  ±...
Source: Journal of Environmental Health Science and Engineering - July 28, 2020 Category: Environmental Health Source Type: research

Analysis, spatial distribution and ecological risk assessment of arsenic and some heavy metals of agricultural soils, case study: South of Iran
ConclusionsAlthough in the short run, the contents of the elements found in the agricultural soil samples may not be alarming for agricultural production and consequently human health, signals it can be observed especially for Cd in the long term due to the impact of anthropogenic activities that lead to the discharge of this element to the environment and can result in its accumulation in agricultural soils. In conclusion, as it is expected that the metal inputs increase in the future, it is recommended that plant analyses be included in the future studies for determining the impact of the amount of bioavailable metals. (...
Source: Journal of Environmental Health Science and Engineering - July 27, 2020 Category: Environmental Health Source Type: research

The reaction of wastewater treatment and power generation of single chamber microbial fuel cell against substrate concentration and anode distributions
This study demonstrated the effectiveness of single chamber up-flow membrane-less microbial fuel cell (UFML-MFC) in wastewater treatment concurrently with bioelectricity generation. The objectives of this study were to examine the effect of influent substrate concentration (0.405  g/L, 0.810 g/L, 1.215 g/L, 1.620 g/L), anode distributions (11 cm, 17 cm, 23 cm ) and surface morphologies for biofilm formation on the performance of wastewater treatment and power generation. The optimum performance was obtained with substrate concentration of 0.810 g/L. The COD removal efficiency, o...
Source: Journal of Environmental Health Science and Engineering - July 24, 2020 Category: Environmental Health Source Type: research

Risk factors of death from flood: Findings of a systematic review
ConclusionsThe study identified many factors that affect flood deaths. The variety and the diverse nature of the factors necessitate appropriate interventions for removing or reducing the effects of the identified factors. More quantitative analytical studies are needed to confirm causal relationship between extracted factors and floods death. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - July 24, 2020 Category: Environmental Health Source Type: research

Eco-friendly, renewable Crambe abyssinica Hochst-based adsorbents remove high quantities of Zn 2+ in water
AbstractAlthough not considered poisonous and with natural occurrence, Zn contamination is mainly related to anthropic actions. This research aim was to develop, from crambe wastes, adsorbents with high adsorption capacity of Zn2+. The crambe biomass was modified with H2O2, H2SO4 and NaOH 0.1  mol L−1, resulting in four crambe-based adsorbents: C.in natura (unmodified), C. H2O2, C. H2SO4 and C. NaOH. These were studied by determination of their chemical components, SEM, FTIR, pHPZC, thermal stability (by TG/DTG curves), SSA, pore volume and pore diameter (by BET and BJH). Adsorption studies were also carrie...
Source: Journal of Environmental Health Science and Engineering - July 21, 2020 Category: Environmental Health Source Type: research

Morphological, acoustical, mechanical and thermal properties of sustainable green Yucca ( Y. gloriosa ) fibers: an exploratory investigation
ConclusionFibers extracted from the leaves of Yucca demonstrated fair amounts of mechanical and thermal resistance and strength. The samples fabricated from Yucca fibers demonstrated fair levels of sound absorption coefficients particularly at higher frequency ranges which are typical to the other natural fibers. The possible use of Yucca fibers as either a reinforcing agent for composites or a sound absorbing medium is highly promising. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - July 16, 2020 Category: Environmental Health Source Type: research

Determination of bacterial and fungal bioaerosols in municipal solid-waste processing facilities of Tehran
ConclusionsThere were significant differences between the concentration of bioaerosols in cold and warm seasons. The concentrations of bioaerosols in the air surrounding the rotary screen and conveyer belt were significantly more than those in other sampling locations, but were within the recommended maximum of 103 and 104 CFU/m3. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - July 6, 2020 Category: Environmental Health Source Type: research

Microbial mortality behavior promoted by silver (Ag + /Ag o )-modified zeolite-rich tuffs for water disinfection
ConclusionTheE. coli,S. faecalis andC. albicans survival behavior suspended in aqueous solutions after contact with Ag-modified natural zeolites depends on the chemical speciation of the silver present in these materials, Ag+1 in the case of OAgiZ or nanoparticles of Ago promoted by the grapefruit extract (OAgnpTZ), as well as by non-thermal plasma generated in a dielectric barrier discharge reactor of parallel plates (OAgnpPZ). In general, the concentration of silver in the aqueous solution after the disinfection process cannot exceed the recommended levels established for international organizations. The OAgnpPZ is a pot...
Source: Journal of Environmental Health Science and Engineering - July 5, 2020 Category: Environmental Health Source Type: research

Effects of catalyst preparation method and reaction parameters on the ultrasound assisted Photocatalytic oxidation of reactive yellow 84 dye
In this study, the Heterogeneous Sono-photocatalytic Process was used to degrade Reactive Yellow 84 (RY 84) dye dissolved in water over iron containing TiO2 and TiO2-Ce catalysts. The catalysts were prepared by sol-gel and incipient wetness impregnation methods and characterized using XRD, SEM, Nitrogen adsorption, UV-Vis DRS and ICP-AES measurements. The TiO2 catalyst containing 1% (in weight) iron, prepared by incipient wetness impregnation technique and calcined at 300  °C (1%Fe/TiO2–300 °C (IW)) was found to be the most effective catalyst. Parametric study was carried out over this catalyst and ...
Source: Journal of Environmental Health Science and Engineering - July 2, 2020 Category: Environmental Health Source Type: research

Impact of industrial effluent on water, soil and Rice production in Bangladesh: a case of Turag River Bank
ConclusionsThe establishment of industries has quiet negatively altered soil, water and rice production as buttressed by the evidence based viewpoints of the respondents. Proper treatment of industrial effluent and implementation of environmental act would certainly help overcome the problem. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 30, 2020 Category: Environmental Health Source Type: research

Revealing the influences of functional groups in azo dyes on the degradation efficiency and power output in solar photocatalytic fuel cell
In this study, the degradation efficiency and electricity generation of the azo dyes affected by the functional groups and molecular structure in a solar photocatalytic fuel cell (PFC) system were investigated and discussed in detail. Four different azo dyes such as, Acid Orange 7 (AO7), Acid Red 18 (AR18), Reactive Black 5 (RB5), Reactive Red 120 (RR120) with different molecular structure were evaluated. The degradation efficiency of AO7, AR18, RB5 and RR120 achieved 5.6  ± 0.3%, 11.1 ± 0.6%, 41.9 ± 0.9% and 52.1 ± 1.3%, respectively, afte...
Source: Journal of Environmental Health Science and Engineering - June 29, 2020 Category: Environmental Health Source Type: research

Bio-sorption of bisphenol a by the dried- and inactivated-lichen ( Pseudoevernia furfuracea ) biomass from aqueous solutions
AbstractBisphenol A (BPA), which is known as one of the endocrine-disrupting chemicals (EDCs) with hydrophilic hydroxyl groups and hydrophobic aromatic groups, has been widely used in plastic industries. The chemical waste from the industry is sometimes discharges into lakes and rivers, and then these surface waters can be polluted. So, this article aims to investigate the bio-sorption process of BPA by the inactivated lichen (Pseudoevernia furfuracea) biomass from aqueous solution. At initial, the effect of the variables such as initial BPA concentration, solution pH, temperature, contact time and recovery rate on the bio...
Source: Journal of Environmental Health Science and Engineering - June 29, 2020 Category: Environmental Health Source Type: research

Real diesel engine exhaust emission control: indirect non-thermal plasma and comparison to direct plasma for NO X , THC, CO, and CO 2
AbstractRecently, diesel engine exhaust emission control by non-thermal plasma (NTP) technology has been shown to be promising. However, carbon and soot deposition on the inner surface of the NTP reactor for direct plasma processing decreased the efficiency of the plasma process throughout the experiments. In the present work, the feasibility of indirect plasma processing was investigated as an innovative and novel method compared to direct plasma processing. Air was directed through an NTP at an applied voltage of VP-P = 7 kV and a flow rate of 1–4 L/min, and then, it was combined with engine...
Source: Journal of Environmental Health Science and Engineering - June 26, 2020 Category: Environmental Health Source Type: research

Surfactant addition in diesel oil degradation – how can it help the microbes?
ConclusionsThe results indicated that the benefits of surfactant use may be related to deep modification at the omics level, not only that of cell surface properties and confirms the complexity of the interactions between bacterial cells, pollutants and surfactants. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 20, 2020 Category: Environmental Health Source Type: research

Prediction of medical waste generation using SVR, GM (1,1) and ARIMA models: a case study for megacity Istanbul
ConclusionsARIMA (0,1,2) model developed in this study can help decision-makers to take better measures and develop policies regarding waste management practices in the  future. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 19, 2020 Category: Environmental Health Source Type: research

Application of nanofiltration and reverse osmosis for treatment and reuse of laundry wastewater
AbstractThe aim of this study was to investigate the treatment and reuse of laundry wastewater with couple of nanofiltration (NF) and reverse osmosis (RO). In the NF process, optimal values of pH, temperature, transmembrane pressure (TMP) and cross-flow rate were determined using the Taguchi L16 (44) experimental design method. The smaller-the-better signal-to-noise (S/N) ratio was used to analyze the results of experiments. Flux decline caused by fouling was selected as response parameter. A pH of 8.5, temperature of 30  °C, TMP of 12 bar and cross-flow rate of 2 L/min were determined as optimum operati...
Source: Journal of Environmental Health Science and Engineering - June 18, 2020 Category: Environmental Health Source Type: research

Prevalence of Cryptosporidium and Giardia in vegetables in Iran: a nineteen-years meta-analysis review
AbstractCryptosporidium andGiardia are two major protozoa reported from vegetables and environment. The prevalence of these parasites supposes to be different regarding the climate zones. This review aimed to evaluate the prevalence ofCryptosporidium andGiardia in vegetables according to the major climate zones in Iran. The results showed pooled prevalence 7% (95% CI: 2%, 14%) and 4% (95% CI: 3%, 6%) forCryptosporidium spp., andGiardia spp., respectively. The prevalence ofGiardia spp. in mountain, desert and semi-desert, and Mediterranean regions was 4% (95% CI: 2%, 6%), 5% (95% CI: 3%, 8%) and 7% (95% CI: 1%, 18%), respec...
Source: Journal of Environmental Health Science and Engineering - June 18, 2020 Category: Environmental Health Source Type: research

Temporal fluctuations of PM 2.5 and PM 10 , population exposure, and their health impacts in Dezful city, Iran
AbstractMorbidity and mortality impacts of particulate matter (PM) are globally important health critical parameters. In this ecological-descriptive study, the health impact of PM10 and PM2.5 associated with there temporal variations in Dezful city were assessed from 2013 to 2015. AirQ+ software handles the PM air pollutants by addressing impact evaluation and life table evaluation. We used a new method to analysis fine particles feature by using regular daily observations of PM10. In this method, relationship between PM2.5 and PM10 mass concentrations were analyzed and calculated. The annual average concentrations of PM10...
Source: Journal of Environmental Health Science and Engineering - June 18, 2020 Category: Environmental Health Source Type: research

Decontamination of microbiologically contaminated abiotic porous surfaces in an oral surgery clinic using vaporised hydrogen peroxide (VHP)
ConclusionsVHP decontamination at a concentration of 300  ppm for 20 min can be used for the holistic disinfection of air, surfaces and equipment in oral surgery offices. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 17, 2020 Category: Environmental Health Source Type: research

Performance of new biodegradable chelants in enhancing phytoextraction of heavy metals from a contaminated calcareous soil
This study has sought to investigate the feasibility of two biodegradable eco-friendly chelants, namely methylglycinediacetic acid (MGDA) andN,N-Bis(carboxymethyl)-L-glutamic acid (GLDA), as compared to the resistant ethylenediaminetetraacetic acid (EDTA), in enhancing phytoextraction of Zn and Pb from a contaminated calcareous soil. For this purpose, a greenhouse experiment was carried out comparing the growth and metal absorption of maize (Zea mays L.) grown on soils treated with EDTA, MGDA, and GLDA chelants at 2, 4 and 8 mmol kg− 1 levels. Results showed that the heavy metal uptakes by the plant shoots gen...
Source: Journal of Environmental Health Science and Engineering - June 14, 2020 Category: Environmental Health Source Type: research

Ecological and potential health risk assessment of heavy metals in soils and food crops grown in abandoned urban open waste dumpsite
ConclusionThe ecological and health risk assessments revealed contamination and high human health risk associated to Cd. Apart from Cd, other heavy metals under investigation in the soil posed low ecological risk. The target hazard quotient (THQ) values for Cd in the plants samples were all above one except for forOcimum gratissimum, indicating that people consuming the plants cultivated in the vicinity of the dumpsite may experience adverse effects due to Cd toxicity. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 13, 2020 Category: Environmental Health Source Type: research

Association of maternal urinary concentration of parabens and neonatal anthropometric indices
ConclusionFindings of this study on the association of urinary parabens of pregnant mothers with birth weight and head circumference suggest that maternal exposure to parabens might impact the fetal growth, However, these findings are based on cross-sectional data, thus the results should be interpreted with caution. The current findings underscore the necessity of providing more strict regulations in industries for limiting parabens use in their products, and the importance of public education for women of reproductive age for using paraben-free compounds. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 12, 2020 Category: Environmental Health Source Type: research

COVID-19: socio-environmental challenges of Rohingya refugees in Bangladesh
AbstractMultifaceted international and national collaborative responses and progress have sustained the world ’s largest densely populated refugee camps in the Cox’s Bazar district, Bangladesh. Yet, the Rohingyas remain in an extremely precarious situation during the COVID-19 pandemic. The refugees are living in highly challenging circumstances of water, sanitation, and hygiene (WASH), natural disasters of the monsoon season as well as existing health and educational challenges of HIV, malnutrition and other diseases. Particulate matter PM2.5 in the sampling camps varied from 44  μg/m3 to 546  μ...
Source: Journal of Environmental Health Science and Engineering - June 12, 2020 Category: Environmental Health Source Type: research

Comparison of performance and efficiency of four methods to extract genomic DNA from oil contaminated soils in southwestern of Iran
In this study four different metagenomic protocols for DNA extraction has been tested in order to sequence and identify the native bacterial species involved in remediation of oily soils. In this regard, 3 manual methods and a soil DNA extraction kit are used. In manual protocol, physical processes including the addition of silica beads and freezing samples by liquid nitrogen, chemical methods such as treating the lysozyme, and lysis buffer and proteinase K as biochemical methods were utilized for optimal extraction. Quality and quantity of the extracted DNA analyzed using Agarose gel electrophoresis and Picodrop respectiv...
Source: Journal of Environmental Health Science and Engineering - June 11, 2020 Category: Environmental Health Source Type: research