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Physical, chemical, and biological methods for the removal of arsenic compounds

Arsenic is a toxic metalloid which is widely distributed in nature. It is normally present as arsenate under oxic conditions while arsenite is predominant under reducing condition. The major discharges of arsenic in the environment are mainly due to natural sources such as aquifers and anthropogenic...

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Main Authors: Lim, King Ting, Abd. Shukor, Mohd. Yunus, Wasoh@Mohamad Isa , Helmi
Format: Article
Language:English
Published: Hindawi Publishing Corporation 2014
Online Access:http://psasir.upm.edu.my/id/eprint/34924/1/Physical%2C%20Chemical%2C%20and%20Biological%20Methods%20for%20the%20Removal%20of.pdf
http://psasir.upm.edu.my/id/eprint/34924/
http://www.hindawi.com/journals/bmri/2014/503784/abs/
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spelling my.upm.eprints.349242015-12-23T13:26:57Z http://psasir.upm.edu.my/id/eprint/34924/ Physical, chemical, and biological methods for the removal of arsenic compounds Lim, King Ting Abd. Shukor, Mohd. Yunus Wasoh@Mohamad Isa , Helmi Arsenic is a toxic metalloid which is widely distributed in nature. It is normally present as arsenate under oxic conditions while arsenite is predominant under reducing condition. The major discharges of arsenic in the environment are mainly due to natural sources such as aquifers and anthropogenic sources. It is known that arsenite salts are more toxic than arsenate as it binds with vicinal thiols in pyruvate dehydrogenase while arsenate inhibits the oxidative phosphorylation process. The common mechanisms for arsenic detoxification are uptaken by phosphate transporters, aquaglyceroporins, and active extrusion system and reduced by arsenate reductases via dissimilatory reduction mechanism. Some species of autotrophic and heterotrophic microorganisms use arsenic oxyanions for their regeneration of energy. Certain species of microorganisms are able to use arsenate as their nutrient in respiratory process. Detoxification operons are a common form of arsenic resistance in microorganisms. Hence, the use of bioremediation could be an effective and economic way to reduce this pollutant from the environment. Hindawi Publishing Corporation 2014 Article NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/34924/1/Physical%2C%20Chemical%2C%20and%20Biological%20Methods%20for%20the%20Removal%20of.pdf Lim, King Ting and Abd. Shukor, Mohd. Yunus and Wasoh@Mohamad Isa , Helmi (2014) Physical, chemical, and biological methods for the removal of arsenic compounds. Journal of Biomedicine and Biotechnology, 2014. art. no. 503784. pp. 1-9. ISSN 1110-7243; ESSN: 1110-7251 http://www.hindawi.com/journals/bmri/2014/503784/abs/ 10.1155/2014/503784
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Arsenic is a toxic metalloid which is widely distributed in nature. It is normally present as arsenate under oxic conditions while arsenite is predominant under reducing condition. The major discharges of arsenic in the environment are mainly due to natural sources such as aquifers and anthropogenic sources. It is known that arsenite salts are more toxic than arsenate as it binds with vicinal thiols in pyruvate dehydrogenase while arsenate inhibits the oxidative phosphorylation process. The common mechanisms for arsenic detoxification are uptaken by phosphate transporters, aquaglyceroporins, and active extrusion system and reduced by arsenate reductases via dissimilatory reduction mechanism. Some species of autotrophic and heterotrophic microorganisms use arsenic oxyanions for their regeneration of energy. Certain species of microorganisms are able to use arsenate as their nutrient in respiratory process. Detoxification operons are a common form of arsenic resistance in microorganisms. Hence, the use of bioremediation could be an effective and economic way to reduce this pollutant from the environment.
format Article
author Lim, King Ting
Abd. Shukor, Mohd. Yunus
Wasoh@Mohamad Isa , Helmi
spellingShingle Lim, King Ting
Abd. Shukor, Mohd. Yunus
Wasoh@Mohamad Isa , Helmi
Physical, chemical, and biological methods for the removal of arsenic compounds
author_facet Lim, King Ting
Abd. Shukor, Mohd. Yunus
Wasoh@Mohamad Isa , Helmi
author_sort Lim, King Ting
title Physical, chemical, and biological methods for the removal of arsenic compounds
title_short Physical, chemical, and biological methods for the removal of arsenic compounds
title_full Physical, chemical, and biological methods for the removal of arsenic compounds
title_fullStr Physical, chemical, and biological methods for the removal of arsenic compounds
title_full_unstemmed Physical, chemical, and biological methods for the removal of arsenic compounds
title_sort physical, chemical, and biological methods for the removal of arsenic compounds
publisher Hindawi Publishing Corporation
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/34924/1/Physical%2C%20Chemical%2C%20and%20Biological%20Methods%20for%20the%20Removal%20of.pdf
http://psasir.upm.edu.my/id/eprint/34924/
http://www.hindawi.com/journals/bmri/2014/503784/abs/
_version_ 1643831300475322368
score 13.211869

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