Nitrogen-removal bioreactor capable of simultaneous nitrification and denitrification for application to industrial wastewater treatment

Murakami, Masahiko; Uemoto, Hiroaki; Watanabe, Atsushi

doi:10.1016/j.bej.2008.03.008

Cited by 49 publications

(16 citation statements)

References 8 publications

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“…For instance release of nitrogenous compounds in water bodies could lead to eutrophication and disruption of the ecosystem in such waters [1,2]. Extensive use of fertilizers and discharge of partially treated domestic wastes contribute to contamination of surface and ground waters with nitrate.…”

Section: Introductionmentioning

confidence: 99%

“…Biological removal of nitrate could occur as a result of nitrate uptake by plants and microorganisms, or through biological transformation of nitrate to nitrogen, referred to as denitrification. Denitrification process which also serves as a critical step in removal of ammonia from domestic wastewaters [1] relies on the activity of denitrifying bacteria which use nitrate or nitrite as an electron acceptor during the oxidation of organic or inorganic compounds for the purpose of energy generation. Denitrification occurs through a number of sequential reactions in which nitrate is reduced to nitrite, and subsequently to nitrogen oxides and nitrogen gas, as described below [7]: …”

Section: Introductionmentioning

confidence: 99%

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Biological removal of nitrate by an oil reservoir culture capable of autotrophic and heterotrophic activities: Kinetic evaluation and modeling of heterotrophic process

Stone

Nemati

2011

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biological removal of nitrate by an oil reservoir culture capable of autotrophic and heterotrophic activities: Kinetic evaluation and modeling of heterotrophic process

Stone

Nemati

2011

Journal of Hazardous Materials

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“…Moreover, the study shows that simultaneous nitrification and denitrification, i.e. the partial nitrification of ammonia to nitrite and subsequently continues with direct reduction of nitrite to nitrogen gas capable of removing industrial nitrogenous waste effectively (Morita et al 2008). It is interesting to report strains with dual function; nitrification and denitrification.…”

Section: Discussionmentioning

confidence: 99%

Identification of Indigenous Bacteria Isolated from Shrimp Aquaculture Wastewater with Bioremediation Application: Total Ammoniacal Nitrogen (TAN) and Nitrite Removal

Muthukrishnan¹,

Sabaratnam²,

Geok-Yuan³

et al. 2015

JSM

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“…From the results, it is seen that the NH 4 -N bioreactor developed in this research can be used as an alternative method for biological groundwater treatment. The advantages of this bioreactor are lower energy consumption from aeration and pumping systems comparing to the reactors used in previous studies [19,20].…”

Section: Performance Of Nh 4 -N Bioreactormentioning

confidence: 99%

Evaluation of Performance and Microbial Community of NH4-N and NO3-N Bioreactors

Khanitchaidecha¹,

Koshy²,

Kamei³

et al. 2013

J Microb Biochem Technol

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Nitrogen contamination of groundwater has become an increasingly serious issue affecting the quality of drinking water. An energy efficient and low cost drinking water treatment method involving two attached growth bioreactors were developed for both NH 4 -N removal and NO 3 -N removal. Continuous flow of the groundwater through the NH 4 -N bioreactor resulted in the removal of NH 4 -N by nitrification without any aeration. The efficiency of NH 4 -N removal was determined to be 70% in the laboratory and 95% in on-site trials. The higher efficiency of the on-site bioreactor resulted from the presence of various groups of local microorganisms (8 groups and 3 classes) which were cultivated from the on-site groundwater. The NO 3 -N bioreactor was capable of removing NO 3 -N from the groundwater efficiently by hydrogenotrophic denitrification at low H 2 supply rates. A high NO 3 -N removal efficiency of 98% was found in the bioreactors that used both local microorganisms and other microorganisms that were cultivated from a drinking water system. Although the microbial community present in both NO 3 -N bioreactors were different, the dominant bacterial taxonomic groups were found to be similar, i.e., Betaproteobacteria and Gammaproteobacteria. The NH 4 -N and NO 3 -N bioreactors are alternative methods with high efficiency and various microbial groups for nitrogencontaminated groundwater treatment.

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Nitrogen-removal bioreactor capable of simultaneous nitrification and denitrification for application to industrial wastewater treatment

Cited by 49 publications

References 8 publications

Biological removal of nitrate by an oil reservoir culture capable of autotrophic and heterotrophic activities: Kinetic evaluation and modeling of heterotrophic process

Biological removal of nitrate by an oil reservoir culture capable of autotrophic and heterotrophic activities: Kinetic evaluation and modeling of heterotrophic process

Identification of Indigenous Bacteria Isolated from Shrimp Aquaculture Wastewater with Bioremediation Application: Total Ammoniacal Nitrogen (TAN) and Nitrite Removal

Evaluation of Performance and Microbial Community of NH4-N and NO3-N Bioreactors

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