نتایج جستجو برای: arsenic removal

تعداد نتایج: 157476  

ژورنال: سلامت و محیط زیست 2010
بذرافشان, ادریس, کرد مصطفی پور, فردوس, کمانی, حسین,

Backgrounds and Objectives:Arsenic is one of the most toxic and dangerous elements in drinking  water that with increase in its application in agriculture, development of applications in agriculture, livestock, medicine, industry and other cases its entry to water resources and environment is much easier.Arsenic is a poisonous, cumulative substance and inhibitor of SH group enzymes and various ...

Journal: :iranian journal of public health 0
r menhage-bena h kazemian m ghazi-khansari m hosseini sj shahtaheri

the purpose of this study was to find a relatively inexpensive method for removal of arsenate and arsenite from drinking water. the capability of iranian natural clinoptilolites, relevant synthetic zeolites a and p and iron(п) modified of them was investigated for the uptake of arsenic anions from drinking water. data obtained from ion-exchange using batch (static) technique showed that among t...

Journal: :international archives of health sciences 0
m.b. miranzadeh environmental health engineering department, health faculty, kashan university of medical sciences, kashan, iran m. naderi qotb-e-pavandi avenue, pezeshk boulevard, kashan university of medical sciences, kashan, iran h. akbari biostatistics & public health department, health faculty, kashan university of medical sciences, kashan, iran a. mahvi environmental health engineering department, health faculty, tehran university of medical sciences, tehran, iran v. past environmental health engineering department, health faculty, kashan university of medical sciences, kashan, iran

aims: arsenic contamination of natural water resources has become an important environmental problem in the world. the adsorption method by iron filings adsorbent or zero-valent iron was used. the study aimed to evaluate the efficiency of iron filings in arsenite removal from polluted water and to investigate the effect of magnetic field on the process. materials & methods: this interventional ...

Journal: :journal of health sciences and surveillance system 0
abooalfazl azhdarpoor department of environmental health, school of health, shiraz university of medical sciences, shiraz, iran; roya nikmanesh department of environmental health engineering, shiraz university of medical sciences, shiraz, iran mohammad reza samaei department of environmental health, school of health, shiraz university of medical sciences, shiraz, iran;

background: contamination of water with arsenic has attracted the researchers’ attention as a global problem in recent years and has been observed in some parts of iran. the purpose of this study is to assess the efficiency of welding iron waste in removing arsenic from aqueous solutions.   methods: in this study, the effects of different parameters, such as ph (3-9), initial concentration of a...

Journal: :Chemosphere 2005
Hsing-Lung Lien Richard T Wilkin

The objectives of this study were to conduct batch and column studies to (i) assess the effectiveness of zero-valent iron for arsenic remediation in groundwater, (ii) determine removal mechanisms of arsenic, and (iii) evaluate implications of these processes with regard to the stability of arsenic and long-term remedial performance of the permeable reactive barrier (PRB) technology. A high conc...

Arsenic is a highly toxic element for human beings, which is generally found in groundwater. Dissolved Arsenic in water can be seen as As+3 and As+5 states. The adsorption process is one of the available methods to remove Arsenic from aqueous solutions. Thus, this papers aims at removing Arsenic (III) from aqueous solutions through adsorption on iron oxide granules. The relation among four inde...

2006
Ana María Sancha

Coagulation technology has been used since 1970 in northern Chile for removing arsenic from drinking-water. This experience suggests that coagulation is an effective technology for the removal of arsenic. It is currently possible to reduce arsenic from 400 microg/L to 10 microg/L at a rate of 500 L/sec, assuming pH, oxidizing and coagulation agents are strictly controlled. The Chilean experienc...

2004
Erdogan Ergican

Arsenic (V) removal using cetylpyridinium chloride (CPC) micelles and 5 kilo-Dalton (kDa) polyethersulfone (PES) membrane was studied in the presence of multiple co-ions. The concentrations of arsenic ([As]F = 0 105 μg/L) and co-ions ([CO3] = 0 – 4 mg/L, [PO4] = 0 – 0.3 mg/L, [SiO3] = 0 – 71 mg/L, and [SO4] = 0 – 400 mg/L) in simulated feed water were varied. Without the addition of CPC micelle...

2014
Berrin Zeliha Can Recep Boncukcuoglu Alper Erdem Yilmaz Baybars Ali Fil

Arsenic contamination of drinking water is a global problem that will likely become more apparent in future years as scientists and engineers measure the true extent of the problem. Arsenic poisoning is preventable though as there are several methods for easily removing even trace amounts of arsenic from drinking water. In the present study, electrocoagulation was evaluated as a treatment techn...

Journal: Pollution 2020

Arsenic is a highly toxic element for human beings, which is generally found in groundwater. Dissolved Arsenic in water can be seen as As+3 and As+5 states. The adsorption process is one of the available methods to remove Arsenic from aqueous solutions. Thus, this papers aims at removing Arsenic (III) from aqueous solutions through adsorption on iron oxide granules. The relation among four inde...

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