نتایج جستجو برای: pollutant removal

تعداد نتایج: 159708  

Journal: :Journal of environmental quality 2010
Xuyang Zhang Xingmei Liu Minghua Zhang Randy A Dahlgren Melissa Eitzel

Vegetated buffers are a well-studied and widely used agricultural management practice for reducing nonpoint-source pollution. A wealth of literature provides experimental data on their mitigation efficacy. This paper aggregated many of these results and performed a meta-analysis to quantify the relationships between pollutant removal efficacy and buffer width, buffer slope, soil type, and veget...

Dehghanifard, Emad, Mohammadi Amini, Maryam, Nourisepehr, Mohammad,

Background and Objective: Antibiotics are considered due to health and environmental problems and therefore they counted as a major threat to human health. The aim of this study was to determine the absorption efficiency of magnetic-chitosan nanocomposite in the removal of antibiotic tetracycline from aqueous solutions. Materials and Method: In this study, the experiments were performed by spec...

Journal: :international journal of nano dimension 0
hamidreza sadegh department of chemistry, science and research branch, islamic azad university, tehran, iran. ramin shahryari ghoshekandi department of chemistry, science and research branch, islamic azad university, tehran, iran. ali masjedi department of chemistry, science and research branch, islamic azad university, tehran, iran. zahra mahmoodi department of chemistry, science and research branch, islamic azad university, tehran, iran. maryam kazemi department of chemistry, payame noor university, zanjan, iran.

carbon nanotubes (cnts) are a novel material that exhibits good adsorption behavior toward various toxic pollutants in aqueous solution. these adsorbents have a fast adsorption rate and high adsorption efficiency, efficient to remove various pollutants and they are easy to recover and reuse. these features highlight the suitability of cnts for the treatment of water polluted with heavy metal io...

Journal: :International journal of environmental sciences & natural resources 2021

As urbanization continues, water pollution is of increasing concern for human health and the environment. Water contaminants common in urban stormwater include nutrients, metals, suspended solids, pesticides, pathogens. The search an inexpensive readily available material that can effectively remove ongoing. Studies have shown woodchips are a promising many different contaminants, including the...

2018
Pimsuda Pansa-Ngat Trin Jedsukontorn Mali Hunsom

This work aimed to produce hydrogen (H₂) simultaneously with pollutant removal from biodiesel wastewater by photocatalytic oxidation using a thermally-treated commercial titanium dioxide (TiO₂) photocatalyst at room temperature (~30 °C) and ambient pressure. The effects of the operating conditions, including the catalyst loading level (1-6 g/L), UV light intensity (3.52-6.64 mW/cm²), initial pH...

ژورنال: سلامت و محیط زیست 2016

Background and Objective: Owing to the extended usage in the safekeeping of environments, the photocatalytic materials have been widely applied. The purpose of the present study was to investigate the photocatalytic activity of ZnO and SnO2 nanoparticles in removal of methyl orange from aqueous media. Materials and Methods: ZnO and SnO2 nanoparticles were synthesized through sol-gel and chem...

Journal: :Water environment research : a research publication of the Water Environment Federation 2008
Ming-Han Li Michael E Barrett

This paper investigated the highway stormwater quality at two Texas cities-Austin and College Station. Two highways with high average daily traffic were monitored using passive stormwater samplers for collecting first-flush runoff during a 16-month period. Detailed traffic and weather data were collected at College Station sites, but only weather data were obtained at Austin sites. A stepwise r...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
nasser modirshahla mohammad ali behnajady mohammad reza jangi oskui

in the present study, photocatalytic removal of p-nitrophenol has been carried out in the presence of zno by using a batch reactor with a uv-c lamp (15 w). the effects of applied zno concentration and uv light intensity have been studied. the increase of initial pollutant concentration decreases the removal rate, and the results indicate that the apparent reaction rate constant in the uv/zno pr...

2009
Xuyang Zhang Xingmei Liu Minghua Zhang Randy A. Dahlgren

76 Vegetated buff ers are a well-studied and widely used agricultural management practice for reducing nonpointsource pollution. A wealth of literature provides experimental data on their mitigation effi cacy. Th is paper aggregated many of these results and performed a meta-analysis to quantify the relationships between pollutant removal effi cacy and buff er width, buff er slope, soil type, a...

2012
Amir Hossein Mahvi A. R. Mesdaghinia Farham Karakani

The purpose of this study was to determine whether continuous flow SBR could provide efficient pollutant removal in domestic wastewater. The experiment was carried out using a pilot scale at Tehran University of Medical Sciences and in wastewater treatment plant. The results showed that 97.7% of BOD removal, 94.9% COD removal, 85.4% TKN removal, 71.4 % TN removal, 55.9% TP removal and 99% TSS r...

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