Waste activated sludge treatment in an anaerobic dynamic membrane bioreactor at varying hydraulic retention time: Performance monitoring and microbial community analysis

Roent Dune A. Cayetano; Gi Beom Kim; Jong Hun Park; Gopalakrishnan Kumar; Sang Hyoun Kim

doi:10.1002/er.5478

Waste activated sludge treatment in an anaerobic dynamic membrane bioreactor at varying hydraulic retention time: Performance monitoring and microbial community analysis

Roent Dune A. Cayetano, Gi Beom Kim, Jong Hun Park, Gopalakrishnan Kumar, Sang Hyoun Kim

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

In this study, the variations in system performance and microbial community composition when treating waste activated sludge without prior chemical or physical pretreatment in anaerobic systems is examined. Two lab-scale digesters, namely anaerobic dynamic membrane bioreactor (AnDMBR) and continuously stirred tank reactor (CSTR), were operated and maintained under mesophilic conditions at varying hydraulic retention times (10-25 days). Decreasing the hydraulic retention time (HRT) affected the methane yield (MY) and methane production rate (MPR) proportionally in both systems. The AnDMBR's maximum MY of 252 mL CH₄/g-VS and MPR of 0.73 L/L/d were 25% and 34% higher than those obtained using the CSTR, respectively. Moreover, a decrease in HRT was accompanied by accumulation of butyric acid in the CSTR, which caused further performance deterioration. In both systems, AnDMBR's dynamic membrane acted as an added layer preventing methanogen wash-out and retaining the essential microorganisms for stable sludge treatment. Dominance in the microbial composition shifted from a strict acetoclastic to a mixed acetoclastic and hydrogenotrophic methanogenic community and that a decrease in the ration of Bacteroidetes to Firmicutes was associated with the increased MY.

Original language	English
Pages (from-to)	12485-12495
Number of pages	11
Journal	International Journal of Energy Research
Volume	44
Issue number	15
DOIs	https://doi.org/10.1002/er.5478
Publication status	Published - 2020 Dec

Bibliographical note

Funding Information:
information National Research Foundation of Korea, Grant/Award Number: NRF-2019M3E6A1103839This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, Korea (NRF-2019M3E6A1103839). This research was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean government (MOTIE) (grant number 20194110100010).

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, Korea (NRF‐2019M3E6A1103839). This research was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean government (MOTIE) (grant number 20194110100010).

Publisher Copyright:
© 2020 John Wiley & Sons Ltd

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

UN SDGs

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

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10.1002/er.5478

Cite this

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title = "Waste activated sludge treatment in an anaerobic dynamic membrane bioreactor at varying hydraulic retention time: Performance monitoring and microbial community analysis",

abstract = "In this study, the variations in system performance and microbial community composition when treating waste activated sludge without prior chemical or physical pretreatment in anaerobic systems is examined. Two lab-scale digesters, namely anaerobic dynamic membrane bioreactor (AnDMBR) and continuously stirred tank reactor (CSTR), were operated and maintained under mesophilic conditions at varying hydraulic retention times (10-25 days). Decreasing the hydraulic retention time (HRT) affected the methane yield (MY) and methane production rate (MPR) proportionally in both systems. The AnDMBR's maximum MY of 252 mL CH4/g-VS and MPR of 0.73 L/L/d were 25% and 34% higher than those obtained using the CSTR, respectively. Moreover, a decrease in HRT was accompanied by accumulation of butyric acid in the CSTR, which caused further performance deterioration. In both systems, AnDMBR's dynamic membrane acted as an added layer preventing methanogen wash-out and retaining the essential microorganisms for stable sludge treatment. Dominance in the microbial composition shifted from a strict acetoclastic to a mixed acetoclastic and hydrogenotrophic methanogenic community and that a decrease in the ration of Bacteroidetes to Firmicutes was associated with the increased MY.",

author = "Cayetano, {Roent Dune A.} and Kim, {Gi Beom} and Park, {Jong Hun} and Gopalakrishnan Kumar and Kim, {Sang Hyoun}",

note = "Funding Information: information National Research Foundation of Korea, Grant/Award Number: NRF-2019M3E6A1103839This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, Korea (NRF-2019M3E6A1103839). This research was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean government (MOTIE) (grant number 20194110100010). Funding Information: This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, Korea (NRF‐2019M3E6A1103839). This research was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean government (MOTIE) (grant number 20194110100010). Publisher Copyright: {\textcopyright} 2020 John Wiley & Sons Ltd",

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Waste activated sludge treatment in an anaerobic dynamic membrane bioreactor at varying hydraulic retention time : Performance monitoring and microbial community analysis. / Cayetano, Roent Dune A.; Kim, Gi Beom; Park, Jong Hun et al.

In: International Journal of Energy Research, Vol. 44, No. 15, 12.2020, p. 12485-12495.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Waste activated sludge treatment in an anaerobic dynamic membrane bioreactor at varying hydraulic retention time

T2 - Performance monitoring and microbial community analysis

AU - Cayetano, Roent Dune A.

AU - Kim, Gi Beom

AU - Park, Jong Hun

AU - Kumar, Gopalakrishnan

AU - Kim, Sang Hyoun

N1 - Funding Information: information National Research Foundation of Korea, Grant/Award Number: NRF-2019M3E6A1103839This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, Korea (NRF-2019M3E6A1103839). This research was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean government (MOTIE) (grant number 20194110100010). Funding Information: This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, Korea (NRF‐2019M3E6A1103839). This research was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean government (MOTIE) (grant number 20194110100010). Publisher Copyright: © 2020 John Wiley & Sons Ltd

PY - 2020/12

Y1 - 2020/12

N2 - In this study, the variations in system performance and microbial community composition when treating waste activated sludge without prior chemical or physical pretreatment in anaerobic systems is examined. Two lab-scale digesters, namely anaerobic dynamic membrane bioreactor (AnDMBR) and continuously stirred tank reactor (CSTR), were operated and maintained under mesophilic conditions at varying hydraulic retention times (10-25 days). Decreasing the hydraulic retention time (HRT) affected the methane yield (MY) and methane production rate (MPR) proportionally in both systems. The AnDMBR's maximum MY of 252 mL CH4/g-VS and MPR of 0.73 L/L/d were 25% and 34% higher than those obtained using the CSTR, respectively. Moreover, a decrease in HRT was accompanied by accumulation of butyric acid in the CSTR, which caused further performance deterioration. In both systems, AnDMBR's dynamic membrane acted as an added layer preventing methanogen wash-out and retaining the essential microorganisms for stable sludge treatment. Dominance in the microbial composition shifted from a strict acetoclastic to a mixed acetoclastic and hydrogenotrophic methanogenic community and that a decrease in the ration of Bacteroidetes to Firmicutes was associated with the increased MY.

AB - In this study, the variations in system performance and microbial community composition when treating waste activated sludge without prior chemical or physical pretreatment in anaerobic systems is examined. Two lab-scale digesters, namely anaerobic dynamic membrane bioreactor (AnDMBR) and continuously stirred tank reactor (CSTR), were operated and maintained under mesophilic conditions at varying hydraulic retention times (10-25 days). Decreasing the hydraulic retention time (HRT) affected the methane yield (MY) and methane production rate (MPR) proportionally in both systems. The AnDMBR's maximum MY of 252 mL CH4/g-VS and MPR of 0.73 L/L/d were 25% and 34% higher than those obtained using the CSTR, respectively. Moreover, a decrease in HRT was accompanied by accumulation of butyric acid in the CSTR, which caused further performance deterioration. In both systems, AnDMBR's dynamic membrane acted as an added layer preventing methanogen wash-out and retaining the essential microorganisms for stable sludge treatment. Dominance in the microbial composition shifted from a strict acetoclastic to a mixed acetoclastic and hydrogenotrophic methanogenic community and that a decrease in the ration of Bacteroidetes to Firmicutes was associated with the increased MY.

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SN - 0363-907X

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JO - International Journal of Energy Research

JF - International Journal of Energy Research

IS - 15

ER -

Waste activated sludge treatment in an anaerobic dynamic membrane bioreactor at varying hydraulic retention time: Performance monitoring and microbial community analysis

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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