Antibiotics are non-biodegradable and can remain for a long time at aquatic environments they have big potential bio-accumulation in the environment. The antibiotics broadly metabolized by humans, animals plants or their metabolites, after metabolization, entered into This study aimed to optimize operational parameters Taguchi design carry out kinetic studies removal of cephalexin antibiotic from aqueous solutions US/H2O2/NiO hybrid process. experimental was performed on laboratory scale 500...

Metronidazole (MNZ) has identified as a remarkable environmental pollutant since it is highly consumed and resistant to biological degradation.This study was accomplished assess the photocatalytic degradation of MNZ in aqueous media using copper oxide nanoparticles (CuO-NPs) activated by H 2 O presence UV irradiation (UV/H /CuO-NPs process).For this purpose, laboratory-scale experiments were carried out 2.5 L batch reactor.The effect operational parameters, that is, initial pH (3-11),...

Azo dyes can lead to a number of problems in the environment due presence benzene rings their structure.Therefore, removal these pollutants is necessary before being discharged directly into environment.This experimental study aimed evaluate degradation capability Acid Blue 113 (AB113) by ultrasound (US)/H 2 O /Fe 2+ and US/S 8 2-/Fe processes.The effects variables like initial pH, Fe , H S 2-and AB113 concentrations on efficiency were investigated using 20-kHz batch generator.The impact...

In this research, the degradation of insecticide diazinon was studied using a new hybrid catalyst consisting magnesium oxide nanoparticles (nano-MgO), carbon nanotubes (CNTs), and graphite (Gr), nano-MgO@CNT@Gr, under various experimental conditions. This study shows optimization nano-MgO@CNT@Gr/O3 process for in aqueous solutions. Box-Behnken design (BBD) response surface methodology (RSM) were used to assess optimize solo effects interactions four variables, pH, loading, reaction time,...

Abstract 2,4-Dinitrotoluene (2,4-DNT) as a priority and hazardous pollutant, is widely used in industrial military activities. In this study the synergistic effect of Fe–RGO–BiVO 4 nanocomposite non-thermal dielectric barrier discharge plasma reactor (NTP-DBD) for degrading 2,4-DNT was evaluated. Preparation done by stepwise chemical method depositing Fe reduced graphene oxide (RGO) on BiVO . Field emission scanning electron microscopy (FESEM), X-ray diffraction analysis (XRD), UV–vis...

Pentachlorophenol (PCP) is one of the most fungicides and pesticides used in wood protection. Poisoning from PCP may be happened dermal absorption, respiration or ingestion. With regard to health environmental effects PCP, many methods were studied for its removal. Microwave assisted other are friendly, safety, economical method, therefore, this study; a modified domestic microwave hydrogen peroxide (MW/H2O2) sodium persulfate (MW/SPS) was removal aqueous solutions. rate measured under...

It has been documented that arsenic a potential risk to human health and identified as factor for hearing impairment. However, there are few studies confirm the ototoxic effect of arsenic, especially on auditory system. Therefore, current study was conducted investigate correlation between thresholds at different frequencies (0.25, 0.5, 1, 2, 4 8 kHz) levels in drinking water samples. A total 240 people, divided into two equal groups: exposed reference, were selected tests. should be noted...

The use of safe and easily available coagulants for removing pollutants from water has been recommended.The aluminum sulfate, polyaluminum chloride ferric extensively have used quantitative elimination fluoride water.One factorial method design experiments the main variables such as pH solution, initial concentration, dosage turbidity were optimized.Results showed that maximum removal was 57%, 50% 53% using alum (pH 4), PACl Fe 3+ 8), respectively.The coagulant a significant effect on...

Microplastics are an emerging environmental concern that threatens the lives of humans and other organisms. Landfills reservoirs for production accumulation microplastics because plastic waste disposed in them turns into over time under influence chemical conditions. This study is first report on abundance characteristics based size, shape, color, composition different old active zones Hamadan landfill. The results clearly showed significantly higher leachate lagoon zone sites than virgin...

In this study, the effect of static magnetic fields (SMFs) on improving performance activated sludge process to enhance higher rate microbial growth biomass and improve settling characteristics in real operation conditions wastewater treatment plants has been investigated. The SMFs (15 mT), hydraulic retention time, SRT, aeration time mixed liquor suspended solids (MLSS) concentrations, volatile (MLVSS) α-factor, pH complete-mix (CMAS) during 30 days operation, were evaluated.There not any...

This study evaluated the relationship between arsenic uptake via drinking water ingestion and concentration in fingernails as a biomarker for human exposure. For this purpose, we collected fingernail samples from 40 healthy participants of arsenic-affected rural regions Kaboudrahang County, west Iran. A total 49 were also individuals who lived areas where contamination sources with had not been reported. It was found that contents 50 4.08% arsenic-contaminated reference villages higher than...