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Bio-electrochemical Denitrification -A review

Discharge of nitrogen components into the environment can be a cause of serious problems such as eutrophication of rivers and deterioration of water sources, as well as hazard for human and animal health. Ammonia (NH3) and nitrate (NO3-) are the most problematic nitrogen compounds in water and waste...

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Main Authors:	Mousavi, S.A.R., Ibrahim, S., Aroua, M.K., Ghafari, S.
Format:	Article
Published:	World Academy of Research and Publication 2011
Subjects:	TA Engineering (General). Civil engineering (General) TP Chemical technology
Online Access:	http://eprints.um.edu.my/18629/
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spelling	my.um.eprints.186292018-04-27T02:04:34Z http://eprints.um.edu.my/18629/ Bio-electrochemical Denitrification -A review Mousavi, S.A.R. Ibrahim, S. Aroua, M.K. Ghafari, S. TA Engineering (General). Civil engineering (General) TP Chemical technology Discharge of nitrogen components into the environment can be a cause of serious problems such as eutrophication of rivers and deterioration of water sources, as well as hazard for human and animal health. Ammonia (NH3) and nitrate (NO3-) are the most problematic nitrogen compounds in water and wastewaters. Nitrification is a common way to eliminate ammonia in municipal and industrial wastewater, which during this process ammonia oxidizes to nitrate. Nitrate removal from these types of wastewaters is an inevitable step in the treatment. Biological nitrate removal is a suitable but slow method to remove nitrate from water and wastewater. Therefore, in treatment plants, some abiotic methods have been commonly applied. However, these methods have indicated some drawbacks such as highly concentrated brine solution, which compels complexity for further treatment or disposal. Consequently, efforts have focused on speeding up microbial denitrification techniques, and different methods have been investigated in the last two decades. Among them bio–electrochemical reactors (BERs) which are equipped with immobilized autohydrogenotrophic microorganisms on cathode showed good efficiency for implementation of denitrification for any nitrate–contaminated water stream. This article reviews the diversity of nitrate source, various designs, and aspects of BERs. In addition, it discusses the variation of pH, carbon source, electric current (EC) and hydraulic retention time (HRT) as some main effective parameters on denitrification rates, and different configurations of BERs. World Academy of Research and Publication 2011 Article PeerReviewed Mousavi, S.A.R. and Ibrahim, S. and Aroua, M.K. and Ghafari, S. (2011) Bio-electrochemical Denitrification -A review. International Journal of Chemical and Environmental Engineering, 2 (2). pp. 140-146. ISSN 2078-0737
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	TA Engineering (General). Civil engineering (General) TP Chemical technology
spellingShingle	TA Engineering (General). Civil engineering (General) TP Chemical technology Mousavi, S.A.R. Ibrahim, S. Aroua, M.K. Ghafari, S. Bio-electrochemical Denitrification -A review
description	Discharge of nitrogen components into the environment can be a cause of serious problems such as eutrophication of rivers and deterioration of water sources, as well as hazard for human and animal health. Ammonia (NH3) and nitrate (NO3-) are the most problematic nitrogen compounds in water and wastewaters. Nitrification is a common way to eliminate ammonia in municipal and industrial wastewater, which during this process ammonia oxidizes to nitrate. Nitrate removal from these types of wastewaters is an inevitable step in the treatment. Biological nitrate removal is a suitable but slow method to remove nitrate from water and wastewater. Therefore, in treatment plants, some abiotic methods have been commonly applied. However, these methods have indicated some drawbacks such as highly concentrated brine solution, which compels complexity for further treatment or disposal. Consequently, efforts have focused on speeding up microbial denitrification techniques, and different methods have been investigated in the last two decades. Among them bio–electrochemical reactors (BERs) which are equipped with immobilized autohydrogenotrophic microorganisms on cathode showed good efficiency for implementation of denitrification for any nitrate–contaminated water stream. This article reviews the diversity of nitrate source, various designs, and aspects of BERs. In addition, it discusses the variation of pH, carbon source, electric current (EC) and hydraulic retention time (HRT) as some main effective parameters on denitrification rates, and different configurations of BERs.
format	Article
author	Mousavi, S.A.R. Ibrahim, S. Aroua, M.K. Ghafari, S.
author_facet	Mousavi, S.A.R. Ibrahim, S. Aroua, M.K. Ghafari, S.
author_sort	Mousavi, S.A.R.
title	Bio-electrochemical Denitrification -A review
title_short	Bio-electrochemical Denitrification -A review
title_full	Bio-electrochemical Denitrification -A review
title_fullStr	Bio-electrochemical Denitrification -A review
title_full_unstemmed	Bio-electrochemical Denitrification -A review
title_sort	bio-electrochemical denitrification -a review
publisher	World Academy of Research and Publication
publishDate	2011
url	http://eprints.um.edu.my/18629/
_version_	1643690749123887104
score	13.211869

Bio-electrochemical Denitrification -A review

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