Impact of carbon to nitrogen ratio on nutrient removal in a liquid-solid circulating fluidized bed bioreactor (LSCFB)

Mohammad Islam; Nakhla George; Jesse Zhu; Nabin Chowdhury

doi:10.1016/j.procbio.2009.02.003

Impact of carbon to nitrogen ratio on nutrient removal in a liquid-solid circulating fluidized bed bioreactor (LSCFB)

Mohammad Islam, Nakhla George, Jesse Zhu, Nabin Chowdhury

Research output: Journal Publication › Article › peer-review

25 Citations (Scopus)

Abstract

The performance of a liquid-solid circulating fluidized bed bioreactor (LSCFB) with anoxic and aerobic beds and lava rock as a biofilm carrier media was used to investigate the impact of the COD/N ratio on the process performance, with particular focus on total nitrogen removal. Three different COD/N ratios of 10:1, 6:1 and 4:1 were tested at an empty bed contact time of 0.82 h. More than 90% of the influent organic matter was removed throughout the study with 58% removal in the anoxic column in Phase III. Total nitrogen removal efficiencies in Phases I-III were 91%, 82% and 71% and simultaneous nitrification-denitrification (SND) occurred in the aerobic downer. The LSCFB demonstrated tertiary effluent quality at COD/N ratio of 10:1 and 6:1 with soluble biochemical oxygen demand (SBOD) <10 mg l^-1 and total nitrogen (TN) <10 mg l^-1.

Original language	English
Pages (from-to)	578-583
Number of pages	6
Journal	Process Biochemistry
Volume	44
Issue number	5
DOIs	https://doi.org/10.1016/j.procbio.2009.02.003
Publication status	Published - May 2009
Externally published	Yes

Keywords

Simultaneous nitrification-denitrification
Total nitrogen

ASJC Scopus subject areas

Bioengineering
Biochemistry
Applied Microbiology and Biotechnology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.procbio.2009.02.003

Cite this

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title = "Impact of carbon to nitrogen ratio on nutrient removal in a liquid-solid circulating fluidized bed bioreactor (LSCFB)",

abstract = "The performance of a liquid-solid circulating fluidized bed bioreactor (LSCFB) with anoxic and aerobic beds and lava rock as a biofilm carrier media was used to investigate the impact of the COD/N ratio on the process performance, with particular focus on total nitrogen removal. Three different COD/N ratios of 10:1, 6:1 and 4:1 were tested at an empty bed contact time of 0.82 h. More than 90% of the influent organic matter was removed throughout the study with 58% removal in the anoxic column in Phase III. Total nitrogen removal efficiencies in Phases I-III were 91%, 82% and 71% and simultaneous nitrification-denitrification (SND) occurred in the aerobic downer. The LSCFB demonstrated tertiary effluent quality at COD/N ratio of 10:1 and 6:1 with soluble biochemical oxygen demand (SBOD) <10 mg l-1 and total nitrogen (TN) <10 mg l-1.",

keywords = "Simultaneous nitrification-denitrification, Total nitrogen",

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AU - Islam, Mohammad

AU - George, Nakhla

AU - Zhu, Jesse

AU - Chowdhury, Nabin

PY - 2009/5

Y1 - 2009/5

N2 - The performance of a liquid-solid circulating fluidized bed bioreactor (LSCFB) with anoxic and aerobic beds and lava rock as a biofilm carrier media was used to investigate the impact of the COD/N ratio on the process performance, with particular focus on total nitrogen removal. Three different COD/N ratios of 10:1, 6:1 and 4:1 were tested at an empty bed contact time of 0.82 h. More than 90% of the influent organic matter was removed throughout the study with 58% removal in the anoxic column in Phase III. Total nitrogen removal efficiencies in Phases I-III were 91%, 82% and 71% and simultaneous nitrification-denitrification (SND) occurred in the aerobic downer. The LSCFB demonstrated tertiary effluent quality at COD/N ratio of 10:1 and 6:1 with soluble biochemical oxygen demand (SBOD) <10 mg l-1 and total nitrogen (TN) <10 mg l-1.

AB - The performance of a liquid-solid circulating fluidized bed bioreactor (LSCFB) with anoxic and aerobic beds and lava rock as a biofilm carrier media was used to investigate the impact of the COD/N ratio on the process performance, with particular focus on total nitrogen removal. Three different COD/N ratios of 10:1, 6:1 and 4:1 were tested at an empty bed contact time of 0.82 h. More than 90% of the influent organic matter was removed throughout the study with 58% removal in the anoxic column in Phase III. Total nitrogen removal efficiencies in Phases I-III were 91%, 82% and 71% and simultaneous nitrification-denitrification (SND) occurred in the aerobic downer. The LSCFB demonstrated tertiary effluent quality at COD/N ratio of 10:1 and 6:1 with soluble biochemical oxygen demand (SBOD) <10 mg l-1 and total nitrogen (TN) <10 mg l-1.

KW - Simultaneous nitrification-denitrification

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DO - 10.1016/j.procbio.2009.02.003

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IS - 5

ER -

Impact of carbon to nitrogen ratio on nutrient removal in a liquid-solid circulating fluidized bed bioreactor (LSCFB)

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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