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Arsenic removal by iron oxide coated sponge: treatment and waste management
- Source :
- Water science and technology : a journal of the International Association on Water Pollution Research. 60(6)
- Publication Year :
- 2009
-
Abstract
- One of the problems in drinking water that raises concern over the world is that millions of people still have to use arsenic-contaminated water. There is a worldwide need to develop appropriate technologies to remove arsenic from water for household and community water supply systems. In this study, a new material namely iron oxide coated sponge (IOCSp) was developed and used to remove arsenic (As) from contaminated groundwater in Vietnam. The results indicated that IOCSp has a high capacity in removing both As (V) and As (III). The adsorption capacity of IOCSp was up to 4.6 mg As/g IOCSp, showing better than many other materials. It was observed from a pilot study that a small quantity of IOCSp (180 g) could reduce As concentration of 480 μg/L in 1.5 m3 of contaminated natural water to below 40 μg/L. In addition, an exhausted IOCSp, containing a large amount of arsenic (up to 0.42 wt %) could safely be disposed through the solidification/stabilization with cement. Addition of fly ash also reduced the amount of arsenic in the leachate.
- Subjects :
- Environmental Engineering
Waste management
Polyurethanes
Iron oxide
chemistry.chemical_element
Water
Contamination
Ferric Compounds
Arsenic
Water Purification
chemistry.chemical_compound
chemistry
Fly ash
Environmental science
Water treatment
Leachate
Adsorption
Groundwater
Water Pollutants, Chemical
Water Science and Technology
Waste disposal
Subjects
Details
- ISSN :
- 02731223
- Volume :
- 60
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- Water science and technology : a journal of the International Association on Water Pollution Research
- Accession number :
- edsair.doi.dedup.....dce7295948e0e933a5cb96b7acaeb50a