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Photocatalytic degradation of bisphenol a from aqueous solution using bismuth ferric magnetic nanoparticle: synthesis, characterization and response surface methodology-central composite design modeling
ConclusionIn conclusion, it can be stated like BPA, the prepared BFO NMPs is a promising photocatalyst for practical application in organic pollutant decomposition. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 24, 2022 Category: Environmental Health Source Type: research

Novel Graphene oxide-Polyethylene Glycol mono-4-nonylphenyl Ether adsorbent for solid phase extraction of Pb2+ in blood and water samples
AbstractA novel and efficient Graphene Oxide-Polyethylene Glycol mono-4-nonylphenyl Ether (GO-PEGPE) nanocomposite was synthesized and used for solid phase extraction of trace levels of Pb2+ in different water and blood samples. The synthesized adsorbent was then characterized by the Fourier Transform-Infrared spectrophotometry (FT-IR), Field Emission-Scanning Electron Microscopy (FE-SEM), Energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction analysis (XRD). To optimize the critical parameters including pH of samples solution, amounts of adsorbent and extraction time, the response surface methodology based on th...
Source: Journal of Environmental Health Science and Engineering - June 13, 2022 Category: Environmental Health Source Type: research

Polycyclic aromatic hydrocarbons (PAHs) in soils around oil refineries; Case study: Erbil and Kirkuk refineries, Iraq- A modelling approach
ConclusionUsing an appropriate monitoring system, as well as sound management decisions to reduce the emission of environmental pollution are needed. Also, it seems that the use of constant values for soil physicochemical parameters such as moisture and porosity, despite seasonal variations, may result in uncertainty for fate and transport modelling. Therefore, seasonal sampling and analysis of soil parameters, would be helpful. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - June 9, 2022 Category: Environmental Health Source Type: research

Climate adaptive hospital: A systematic review of determinants and actions
ConclusionConsidering the significance of climate change and strategies to confront it as one of the current challenges and priorities in the world, it is necessary to develop a framework and model to reduce the effects of climate change and adapt to climate changes in hospitals and other health centers. The identification and classification of the measures and components, influencing hospital adaptability and solutions for reducing the climate change impacts could be the first stage in developing this strategy. This is because it is impossible to create this framework without identifying these factors and their mutual imp...
Source: Journal of Environmental Health Science and Engineering - June 9, 2022 Category: Environmental Health Source Type: research

Evaluation of fatty acid profiles of Chlorella Vulgaris microalgae grown in dairy wastewater for producing biofuel
AbstractBiodiesel is a biofuel made from plant oils and animal lipids. Utilization of lipid accumulation in algae biomass as biodiesel is a good alternative to fossil fuels. In this researchChlorella vulgaris microalga was applied after planting in BG11 culture medium in effluent and wastewater of dairy industry after preparation of 25, 50, and 75% dilutions. Algae in two concentrations with low (13 million cells/mL) and high density (26 million cells/mL) were injected. According to the results obtained in the wastewater environment the highest amount of C16:0 fatty acid was observed in F2 25% treatment, and C18:0 fatty ac...
Source: Journal of Environmental Health Science and Engineering - June 7, 2022 Category: Environmental Health Source Type: research

Copper cable doped with tin oxide and its application to photodegrade natural organic matters
AbstractNatural organic matters are of particular importance in drinking water treatment due to their reaction with chlorine, and formation of disinfection byproducts that cause cancer in humans. Photocatalysis can remove natural organic matters from water but usually powdery photocatalysts are used which should be separated from water by filtration due to their toxic effects. In this work, a piece of copper cable used in electric industries was doped with tin oxide and applied as a photocatalyst to remove natural organic matters, humic acid and humate liquid fertilizer, from water. Tin (II) chloride was used as precursor,...
Source: Journal of Environmental Health Science and Engineering - May 28, 2022 Category: Environmental Health Source Type: research

Determining the appropriate mixing ratio in a multi-substrate anaerobic digestion of organic solid wastes employing Taguchi method
AbstractThe current research proposed a method for optimally combining feed input ratios in order to improve the quantity and quality of daily biogas production through optimizing the variable response level in the Taguchi method. The anaerobic digestion (AD) process of an existing plant in Iran was simulated through a set of two-stage pilot reactors under mesophilic temperature conditions in order to achieve optimal operational performance. Three common substrates (organic fraction of municipal solid wastes, fruit and vegetable wastes, and horse manure) along with two recirculated materials; the post-digestion sludge and ...
Source: Journal of Environmental Health Science and Engineering - May 19, 2022 Category: Environmental Health Source Type: research

Optimization of polypropylene microplastics removal using conventional coagulants in drinking water treatment plants via response surface methodology
ConclusionAccording to this study, PACl is not capable of efficiently removing virgin PPMPs in DWTPs, thereby exposing humans to eco-toxicological impacts of PPMPs through tap water. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - May 10, 2022 Category: Environmental Health Source Type: research

Quantifying and qualifying hospital pharmaceutical waste: a case study in Tehran, Iran
This study showed that the pharmaceutical waste production in the considered hospital was relatively high, which can be attributed to several factors such as waste management, type of health care, type of hospital, ratio of patients under daily treatment, gender, and initial weight of containers. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - April 22, 2022 Category: Environmental Health Source Type: research

An environmental field assessment of soil quality and phytoremediation of toxic metals from saline soil by selected halophytes
AbstractThe current study has aims to investigate the soil quality and phytoextraction of cadmium (Cd), chromium (Cr), and lead (Pb) from saline soils usingAlhagi maurorum (camelthorn),Tamarix aphylla (saltcedar),Salvadora persica (mustard bush), andSuaeda nigra (bush seep weed). The saline bulk soil, rhizospheric soil, and different parts of selected plants were oxidized using the acid mixture and determined Cd, Cr, and Pb by atomic absorption spectrometry. The bio-concentration factor (BCF) and translocation factor (TF) of also examined. The quality parameters of soil like pH (<  8.5), and electrical conductivity (E...
Source: Journal of Environmental Health Science and Engineering - April 19, 2022 Category: Environmental Health Source Type: research

Resource utilization of hazardous Cr/Fe-rich sludge: synthesis of erdite flocculant to treat real electroplating wastewater
In this study, a novel route was developed to recycle Cr/Fe-bearing sludge as erdite-bearing flocculant for wastewater treatment. Results showed that two sludges were irregular aggregates, one of which contained 1.6  wt.% Cr (short for LS) and the other contained 4.2 wt.% Cr (HS). After hydrothermal treatment, stable Cr(III)/S-bearing product was formed from the Cr(VI) reduction in the sludges. Conversely, erdite was generated in nanorod form with diameter and length of 200 nm and 0.5–1 μm from LS, respe ctively, whereas grew radially to 1.5–2.5 μm for HS. The two erdite-bearing products were spontaneously hydro...
Source: Journal of Environmental Health Science and Engineering - April 6, 2022 Category: Environmental Health Source Type: research

Scale Development and Psychometric Evaluation of a Questionnaire for Measuring the Risk Factors for Death in Floods
ConclusionsAccording to the results, the factors affecting flood death questionnaire (FAFDQ) could be used to make decisions, identify groups at risk of flood-related deaths, and implement flood-related death-reduction interventions. Indeed, these measures have led to the development of a comprehensive and reliable questionnaire for measuring the factors affecting flood deaths. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - March 28, 2022 Category: Environmental Health Source Type: research

The impact of meteorological parameters on PM10 and visibility during the Middle Eastern dust storms
In this study, we investigate the relationship between meteorological parameters, PM10, AOD, air mass source origin, and visibility during severe desert dust storms (Average3h PM10 >  3200 µg m−3) between 2009 and 2012. Six of seven such events occurred between February and March. Interestingly, for the seven cases there was always an alarming PM10 mass concentration peak (137 –553 µg m−3) between 12:00 –18:00 (local time) that was 18–24 h before the dominant peak of the storm (3279–4899 µg m−3). The maximum wind speed over the multi-day periods examined for the dust storms is usually observe...
Source: Journal of Environmental Health Science and Engineering - March 18, 2022 Category: Environmental Health Source Type: research

Concentration and source allocation of black carbon by AE-33 model in urban area of Shenzhen, southern China
ConclusionThis study showed that the concentration of BC is lower than other regions, and the source allocation is mainly local fossil fuels (vehicle emission, etc.). (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - March 10, 2022 Category: Environmental Health Source Type: research

Optimizing the effect of hydrochar on anaerobic digestion of organic fraction municipal solid waste for biogas and methane production
ConclusionAs an OFMSW HTC pretreatment for AD, hydrochar additive has a significantly positive and negative effect on biogas production, methane production, and methane content of biogas depending on operating conditions. Therefore. It is necessary to consider the individual and interaction effects of the temperature and hydrochar: OFMSW ratio, obtain the optimal conditions and determine responses. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - March 9, 2022 Category: Environmental Health Source Type: research