Journal of Environmental Health Science and Engineering This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Production of biodiesel from salvia mirzayanii oil via electrolysis using KOH/Clinoptilolite as catalyst
ConclusionBased on the obtained results, in all three methods of catalyst synthesis KOH was loaded on Clinoptilolite support but at the end of the transesterification reaction only the catalyst synthesis via incipient wetness method could be reused three times under optimum reaction conditions. The produced biodiesel had high quality, whose physical and chemical properties had good agreement with ASTM, EN 14214, IS 15607 standards. Since thesalvia mirzayanii oil is an appropriate feedstock source for biodiesel production, it is suggested to usesalvia mirzayanii oil and KOH/Clinoptilolite catalyst to produce biodiesel on in...
Source: Journal of Environmental Health Science and Engineering - January 23, 2022 Category: Environmental Health Source Type: research

Ecotoxicity and bioremediation potential assessment of soil from oil refinery station area
ConclusionBy assessing phytotoxicity and effect on ostracod mortality and progress of soil self-decontamination process, proper approach of reclamation of demoted area can be provided. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - January 22, 2022 Category: Environmental Health Source Type: research

The effect of size distribution of ambient air particulate matter on oxidative potential by acellular method Dithiothreitol; a systematic review
In this study, to answer the question of whether particle size affects oxidative potential (OP), we searched the main databases, including PubMed, Scopus, Embase, and Web of Science, and defined search strategy based on the MESH terms for the above-mentioned search engines. All articles published until 2021 were searched. An ANOVA was run using R software to show the correlation between the size distributions of particulate matter and oxidative potential (base on mass and volumetric units) in ambient air. As expected, the regression results showed that the relationship between particle size and OP values for the studies ba...
Source: Journal of Environmental Health Science and Engineering - January 22, 2022 Category: Environmental Health Source Type: research

Asian dust storms result in a higher risk of the silicosis hospital admissions
ConclusionAsian dust storms do result in a rise of silicosis hospital admissions, particularly for those above 74, those under 45, and for females. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - January 21, 2022 Category: Environmental Health Source Type: research

Occurrence of organic micropollutants and heavy metals in the soil after the application of stabilized sewage sludge
In this study, clover and fodder corn plants were planted in the soil to which stabilized sewage sludge was applied. The soil was analyzed and evaluated by collecting samples to determine changes in the application fields before plantation and one year after the harvest. To monitor changes in the soil and after the application of stabilized sludge to the soil, the stabilized sewage sludge was evaluated for the suitability of parameters such as heavy metals, halogenated organic compounds including adsorbable organic halogens (AOX), nonylphenol ethoxylates (NPE), polycyclic aromatic hydrocarbon compounds (PAH), polychlorinat...
Source: Journal of Environmental Health Science and Engineering - January 19, 2022 Category: Environmental Health Source Type: research

Isolation and characterization of chromium (VI) tolerant bacteria from tannery effluents
ConclusionThe isolated bacteria specificallyL. lactis after more evaluations, may show the potential for bioremediation of chromium from tannery effluents. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - January 18, 2022 Category: Environmental Health Source Type: research

Novel application of in vitro disinfection for modeling the biofilm formation inhibition, antimicrobial susceptibility and antibiotic resistance of Pseudomonas aeruginosa: a study of free and combined chlorine compounds
AbstractBiofilm formation and antibiotic resistance are the most important ways in which water bacteria such asPseudomonas aeruginosa are protected against antibacterial agents. The aim of this study was to develop a rapid and cost-effective laboratory method for modeling and optimizing chlorine disinfection conditions. Critical factors (disinfection type, concentration, contact time and pH) were tested on bactericidal effect, inhibition of biofilm formation (IBF) and antibiotic susceptibility (AS) ofP. aeruginosa. The central composite face-centered (CCF) design was applied to model the effect of disinfection process on t...
Source: Journal of Environmental Health Science and Engineering - January 18, 2022 Category: Environmental Health Source Type: research

Prediction of airborne pollen concentrations by artificial neural network and their relationship with meteorological parameters and air pollutants
AbstractAfter the early rainfall in the autumn of 2013, respiratory syndromes spread in the Khuzestan province of Iran with the most severity in Ahvaz. There have been recurring outbreaks in recent years. Considering that pollen-derived airborne allergens are regarded as key aeroallergens and the main cause of allergic rhinitis and asthma, this work aimed to forecast total pollen concentration in Ahvaz through an artificial neural network (ANN), followed by evaluating the pollen spatial distribution across the city and the association between pollen concentrations and environmental parameters. The utilized ANN in this work...
Source: Journal of Environmental Health Science and Engineering - January 15, 2022 Category: Environmental Health Source Type: research

Using Artificial Intelligent to Model Predict the Biological Resilience With an Emphasis on Population of cyanobacteria in Jajrood River in The Eastern Tehran, Iran
This study has proposed the use of artificial intelligent (AI) models for assessing the relationship among the biological conditions in Jajrood River. For this purpose, the qualitative monthly data of the river related to 2008 –2018 were applied. Different resilience indicators for preparation of scenarios were determined using the canonical correlation analysis (CCA) method. Appropriate time-series scenarios (5scenarios) were modelled via Gene Expression Programming (GEP) plus Support Vector Machine (SVM), the bio-indi cators were predicted. In order to reduce the error, the wavelet hybrids (W-GEP and W-SVM) were also u...
Source: Journal of Environmental Health Science and Engineering - January 13, 2022 Category: Environmental Health Source Type: research

Enhanced photocatalytic activity of Fe2O3@ZnO decorated CQD for inactivation of Escherichia coli under visible light irradiation
AbstractThe present study, magnetically separable Fe2O3@ZnO/CQD nanocomposite was successfully prepared via hydrothermal process and characterized with SEM-EDX, XRD, FTIR, VSM and DRS analysis. The effect of operational parameters includes photocatalyst dosage, photocatalyst type, CQD content andEscherichia coli (E. coli) concentration were evaluated on theE. coli inactivation. The disinfecting ability of nanocomposite components was obtained as Fe2O3@ZnO/CQD> Fe2O3@ZnO> ZnO> Fe2O3> CQD which shows a synergetic effect among different components. The highestE. coli inactivation rate (Kmax=0.7606  min−1) was o...
Source: Journal of Environmental Health Science and Engineering - January 13, 2022 Category: Environmental Health Source Type: research

Temporal profiles of ambient air pollutants and associated health outcomes in two polluted cities of the Middle East
This study evaluated the air quality of these two cities by Air Quality Index (AQI). As a result, mean concentrations of O3, NO2, PM10 and PM2.5 were higher in Ahvaz than Tehran while Tehran was more pollutant in terms of CO and SO2. Diurnal variations of O3 in weekend were the only trend located above weekday variations along the daytimes. Hourly variations of all pollutants changed with a wider range of concentrations in Ahvaz. Diurnal peaks of all pollutants showed their highest level on Monday as the busiest day in mega city, Tehran with the exception of SO2. PM2.5 was the worst and limiting pollutant for both cities. ...
Source: Journal of Environmental Health Science and Engineering - January 13, 2022 Category: Environmental Health Source Type: research

Performance of integrated sequencing batch reactor (SBR) and reverse osmosis (RO) process for leachate treatment: effect of pH
ConclusionsThe higher flux value at pH  = 9.3 is result of high content of organic matter in leachate, which is better rejected at higher pH because of higher electrostatic repulsion between organic matter and membrane surface. This indicates that the organic matter content should be taken into account when determining the operating parameters (pH values) of the RO system. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - January 12, 2022 Category: Environmental Health Source Type: research

Migration of Irganox 1010, Irganox 1076, and Titanium dioxide into Doogh and corresponding food simulant from laminated packaging
ConclusionThe results indicate the possible migrating of Irganox 1010 and TiO2 through laminate packaging into Doogh in some storage conditions. Since the migration value was low, the mentioned film was proven safe for Doogh packaging, imposing no hazards on human health.Graphical abstract (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - January 12, 2022 Category: Environmental Health Source Type: research

Urinary phenols and parabens in relation to hearing loss: The National Health and Nutrition Examination Survey
ConclusionsThe present study offers limited evidence that background phenol and paraben exposures are ototoxicants for the United States adult population. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - January 11, 2022 Category: Environmental Health Source Type: research

Oxidative degradation of sulfamethoxazole from secondary treated effluent by ferrate(VI): kinetics, by-products, degradation pathway and toxicity assessment
AbstractSulfamethoxazole (SMX) is a typical antibiotic in the world, which is frequently detected in the aquatic environment. The current study was aimed to investigate the SMX degradation in secondary treated wastewater using potassium Ferrate [Fe(VI)]. The effects of various experimental conditions, EDTA and phosphate as chelating agents, and toxicity assessment were also considered. Secondary treated effluent was spiked with predefined SMX concentrations, and after desired reaction time with Fe(VI), residual SMX was measured using HPLC. Results indicated that SMX degradation by Fe(VI) was favored under acidic condition,...
Source: Journal of Environmental Health Science and Engineering - January 10, 2022 Category: Environmental Health Source Type: research