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Investigation of asbestos concentration in ambient and lavage fluids of patients referred for bronchoscopy, Ahvaz
ConclusionsThe exposure of different occupational and non-occupational groups to this carcinogenic substance indicates the need for environmental and individual control measures to reduce and prevent asbestos exposure. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - October 31, 2022 Category: Environmental Health Source Type: research

Microplastics in atmospheric dust samples of Sistan: sources and distribution
AbstractIn this work, the amount and physical and chemical characteristics of airborne microplastics (MPs) pollution in dust samples in Sistan, located in the eastern part of Iran, is reported. Sampling stations were selected according to the wind direction and population density. MPs were collected by a static dust sampler and analyzed by optical microscopy and FT-IR spectroscopy. Results showed that the distribution frequency of MPs in residential and non-residential areas was 6 to 11 pieces per 100  g (pcs/100 g) with an average abundance of 9.8 pcs/100 g. Fragmented MPs were approximately consisted 64% of total MPs ...
Source: Journal of Environmental Health Science and Engineering - October 31, 2022 Category: Environmental Health Source Type: research

Synthesis of BiOI@NH2-MIL125(Ti)/Zeolite as a novel MOF and advanced hybrid oxidation process application in benzene removal from polluted air stream
AbstractOne of the popular process in volatile organic compounds removal in gas phase is advanced oxidation process. We in this research, synthesized BiOI@NH2-MIL125(Ti)/Zeolite nanocomposite as a novel nanocomposite to degradation of benzene in hybrid advanced oxidation process. The nanocomposite synthesized via solvothermal method. The effect of airflow, ozone gas concentration, hydrogen peroxide concentration, relative humidity and initial benzene concentration are the main parameters in the UV/O3/H2O2/ nanocomposite hybrid process that were studied. The characterization by XRD, FT-IR, FESEM, EDS element mapping, TEM, B...
Source: Journal of Environmental Health Science and Engineering - October 29, 2022 Category: Environmental Health Source Type: research

Particulate matter concentrations and characterization in urban subway system-case study Tehran, Iran
In this study, the particulate sampling of the four Tehran subway stations was conducted in March-July 2018 during different seasons to determine indoor and outdoor PM10 and PM2.5 concentrations and elemental composition. The samples were analyzed to determine 11 elements such as Pb(Lead), Cd(Cadmium), Ni(Nickel), Co(Cobalt), Mn(Manganese), Zn(Zink), Fe(Iron), Cu(Copper), As(Arsenic), Al(Aluminum) and Cr(Chromium) qualitatively. The experimental results indicated that the average concentrations of both PM10 and PM2.5 in indoor stations (platforms) were approximately 2 –5 times higher than those in the outdoors (ambient a...
Source: Journal of Environmental Health Science and Engineering - October 27, 2022 Category: Environmental Health Source Type: research

Determining biota succession in a domestic wastewater pond system after treatment with a specific consortium microalgae
AbstractWastewater stabilization ponds (WSPs) rely on the metabolic activities of the inhabiting microbiota to treat wastewater. A selected consortium ofChlorella vulgaris andChlorella protothecoides were used to manipulate the natural resident microalgae assemblage to improve the treatment performance of a domestic wastewater pond treatment system in a coastal region. Since information is lacking about the resulting influence on the composition or succession of the phytoplankton or associated microbiota assemblage, the current study aimed to determine how dosing with the microalgaeC. vulgaris andC. protothecoides change t...
Source: Journal of Environmental Health Science and Engineering - October 26, 2022 Category: Environmental Health Source Type: research

Artificial intelligence techniques in electrochemical processes for water and wastewater treatment: a review
AbstractIn recent years, artificial intelligence (AI) techniques have been recognized as powerful techniques. In this work, AI techniques such as artificial neural networks (ANNs), support vector machines (SVM), adaptive neuro-fuzzy inference system (ANFIS), genetic algorithms (GA), and particle swarm optimization (PSO), used in water and wastewater treatment processes, are reviewed. This paper describes applications of the mentioned AI techniques for the modelling and optimization of electrochemical processes for water and wastewater treatment processes. Most research in the mentioned scope of study consists of electrooxi...
Source: Journal of Environmental Health Science and Engineering - October 1, 2022 Category: Environmental Health Source Type: research

Correction to: Correlations between meteorological indicators, air quality and the COVID-19 pandemic in 12 cities across China
(Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 20, 2022 Category: Environmental Health Source Type: research

Protective effect of plant compounds in pesticides toxicity
AbstractIntroductionThe relationship between pesticide exposure and the occurrence of many chronic diseases, including cancer, is confirmed by literature data.MethodsIn this review, through the analysis of more than 70 papers, we explore an increase in oxidative stress level caused by exposure to environmental pollutants and the protective effects of plant-origin antioxidants.Results and discussionOne of the molecular mechanisms, by which pesticides affect living organisms is the induction of oxidative stress. However, recently many plant-based dietary ingredients with antioxidant properties have been considered as a chemo...
Source: Journal of Environmental Health Science and Engineering - September 15, 2022 Category: Environmental Health Source Type: research

High efficiency of magnetite nanoparticles for the arsenic removal from an aqueous solution and natural water taken from Tambo River in Peru
In this report, we demonstrate arsenic removal from an aqueous solution and natural water taken from the Peruvian river (Tambo River in Arequipa, Peru) using magnetite NPs synthesized by the coprecipitation method. XRD data analysis of Fe3O4 NPs revealed the formation of the cubic-spinel phase of magnetite with an average crystallite size of ~  13 nm, which is found in good agreement with the physical size assessed from TEM image analysis. Magnetic results evidence that our NPs show a superparamagnetic-like behavior with a thermal relaxation of magnetic moments mediated by strong particle-particle interactions. FTIR abs...
Source: Journal of Environmental Health Science and Engineering - September 14, 2022 Category: Environmental Health Source Type: research

Phytoremediation of CdS/Te quantum dots by Ocimum basilicum in the presence of EDTA
ConclusionThe bioconcentration factors confirm thatO. basilicum phytoextracts cadmium from soils contaminated with CdS/Te QDs and CdIS. The bioconcentration factors of cadmium (under both species CdS/Te QDs and CdIS) increase in the presence of EDTA. The bioconcentration and translocation factors suggest that consuming “basil” from contaminated soils with CdS/Te QDs at low concentrations increases the exposition to this metal. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 14, 2022 Category: Environmental Health Source Type: research

Facile encapsulation of nano zero-valent iron with calcium carbonate: synthesis, characterization and application for iron remediation
In this study, CaCO3 was used as a modifier for nano zero-valent iron (nZVI) surface to prevent rapid aggregation and effectively utilized for iron remediation from aqueous solution. Surface chemistry and morphology of CaCO3 encapsulated nZVI (CaCO3–nZVI) before and after treatment of contaminant iron solution were characterized by scanning electron microscopy–energy dispersive X-ray (SEM–EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectros copy (XPS). The mechanisms of surface modification as well as iron remediation w...
Source: Journal of Environmental Health Science and Engineering - September 14, 2022 Category: Environmental Health Source Type: research

Trajectories of neighborhood environmental factors and their associations with asthma symptom trajectories among children in Australia: evidence from a national birth cohort study
ConclusionExposure to heavy traffic and poor neighborhood liveability increased the risk of having an unfavourable asthma symptom trajectory in childhood. Reducing neighborhood traffic load and improving neighborhood safety and amenities may facilitate a favorable asthma symptom trajectory among these children. (Source: Journal of Environmental Health Science and Engineering)
Source: Journal of Environmental Health Science and Engineering - September 13, 2022 Category: Environmental Health Source Type: research

Surveying the elimination of hazardous heavy metal from the multi-component systems using various sorbents: a review
AbstractIn this review, several adsorbents were studied for the elimination of heavy metal ions from multi-component wastewaters. These utilized sorbents are mineral materials, microbes, waste materials, and polymers. It was attempted to probe the structure and chemistry characteristics such as surface morphology, main functional groups, participated elements, surface area, and the adsorbent charges by SEM, FTIR, EDX, and BET tests. The uptake efficiency for metal ions, reusability studies, isotherm models, and kinetic relations for recognizing the adsorbent potentials. Besides, the influential factors such as acidity, ini...
Source: Journal of Environmental Health Science and Engineering - September 1, 2022 Category: Environmental Health Source Type: research

US-assisted catalytic degradation of paraquat using ZnO/Fe3O4 recoverable composite: Performance, toxicity bioassay test and degradation mechanism
In this study, the ZnO/Fe3O4 catalyst was used as an active catalyst for the oxidation of Paraquat (PQ) herbicide in aqueous solution under ultrasonic (US) waves. FTIR, XRD, FE-SEM, and VSM analyses were performed to characterize the synthesized catalyst. Studies on the effect of radical scavengers were also carried out and the amount of organic matter degradation was determined by measuring the TOC. Under the optimized conditions (catalyst concentration  = 0.75 g/L, herbicide concentration = 10 ppm, US power = 70w), the degradation and mineralization rates of the herbicide were acquired as 96.1% and 68% with...
Source: Journal of Environmental Health Science and Engineering - August 29, 2022 Category: Environmental Health Source Type: research

Biologically treated industrial wastewater disinfection using the synergy of low-frequency ultrasound and H2O2/O3
AbstractBiological wastewater treatment is mostly used in many industries to treat industrial influents. Treated water is consisting of an extremely high concentration of pathogenic microorganisms. Present work demonstrate the treatment of biologically treated sugar industry wastewater (BTSWW) using a low-frequency ultrasound (US). BTWSS consists ofEnterobacter, Salmonella, andEscherichia Coli with a total coliform concentration of 2500  ± 300 CFU/mL. Experiments were performed using the individual effect of US, H2O2, and O3 and the combined effect of US with H2O2, O3, and H2O2 + O3. The complete removal of total...
Source: Journal of Environmental Health Science and Engineering - August 29, 2022 Category: Environmental Health Source Type: research