Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal

Xiangtong Zhou; Muhammad Arslan; Zhigang Liu; Da Li; Haipeng Xi; Yujie Feng; Shanwei Li; Jing Wei; Xinshan Rong; Zhishui Liang; Xiaochun Wang; Zhiren Wu; Mohamed Gamal El-Din

doi:10.1016/j.biortech.2022.127346

Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal

Xiangtong Zhou
, Muhammad Arslan
, Zhigang Liu
, Da Li
, Haipeng Xi
, Yujie Feng^*
, Shanwei Li
, Jing Wei
, Xinshan Rong
, Zhishui Liang
, Xiaochun Wang
, Zhiren Wu
, Mohamed Gamal El-Din

^*Corresponding author for this work

School of Environment

Jiangsu University
University of Alberta
Southeast University, Nanjing

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

7 Scopus citations

Abstract

In this study, baffled anaerobic–aerobic reactors (AOBRs) with modified basalt fiber (MBF) carriers and felt were used to treat domestic wastewater (DWW). The influent was first treated in anaerobic compartments, with the NH₄⁺-N containing digestate refluxed into aerobic compartment for nitrification. The nitrified liquid was channeled to the anaerobic compartments for further denitrification. Under optimal conditions, AOBR with MBF carriers could remove 91% chemical oxygen demand (COD) and 81% total nitrogen (TN), with biomass production increased by 7.6%, 4.5% and 8.7% in three successive anaerobic compartments compared to the control. Biological viability analysis showed that live cells outnumbered dead cells in bio-nests. Metagenomics analysis showed that multiple metabolic pathways accounted for nitrogen conversion in anaerobic and aerobic compartments. More importantly, low COD/TN ratio digestate facilitated heterotrophic nitrification-aerobic denitrification (HN-AD) species growth in aerobic compartment. This study provides a promising strategy to source treatment of DWW from urban communities.

Original language	English
Article number	127346
Journal	Bioresource Technology
Volume	359
DOIs	https://doi.org/10.1016/j.biortech.2022.127346
State	Published - Sep 2022

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Baffled anaerobic–aerobic reactor
Bio-nest
Biomass entrapment
Domestic wastewater
Metagenomics
Nitrogen metabolic pathway

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10.1016/j.biortech.2022.127346

Cite this

Zhou, X., Arslan, M., Liu, Z., Li, D., Xi, H., Feng, Y., Li, S., Wei, J., Rong, X., Liang, Z., Wang, X., Wu, Z., & Gamal El-Din, M. (2022). Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal. Bioresource Technology, 359, Article 127346. https://doi.org/10.1016/j.biortech.2022.127346

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title = "Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal",

abstract = "In this study, baffled anaerobic–aerobic reactors (AOBRs) with modified basalt fiber (MBF) carriers and felt were used to treat domestic wastewater (DWW). The influent was first treated in anaerobic compartments, with the NH4+-N containing digestate refluxed into aerobic compartment for nitrification. The nitrified liquid was channeled to the anaerobic compartments for further denitrification. Under optimal conditions, AOBR with MBF carriers could remove 91\% chemical oxygen demand (COD) and 81\% total nitrogen (TN), with biomass production increased by 7.6\%, 4.5\% and 8.7\% in three successive anaerobic compartments compared to the control. Biological viability analysis showed that live cells outnumbered dead cells in bio-nests. Metagenomics analysis showed that multiple metabolic pathways accounted for nitrogen conversion in anaerobic and aerobic compartments. More importantly, low COD/TN ratio digestate facilitated heterotrophic nitrification-aerobic denitrification (HN-AD) species growth in aerobic compartment. This study provides a promising strategy to source treatment of DWW from urban communities.",

keywords = "Baffled anaerobic–aerobic reactor, Bio-nest, Biomass entrapment, Domestic wastewater, Metagenomics, Nitrogen metabolic pathway",

author = "Xiangtong Zhou and Muhammad Arslan and Zhigang Liu and Da Li and Haipeng Xi and Yujie Feng and Shanwei Li and Jing Wei and Xinshan Rong and Zhishui Liang and Xiaochun Wang and Zhiren Wu and \{Gamal El-Din\}, Mohamed",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = sep,

doi = "10.1016/j.biortech.2022.127346",

language = "英语",

volume = "359",

journal = "Bioresource Technology",

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Zhou, X, Arslan, M, Liu, Z , Li, D, Xi, H, Feng, Y, Li, S, Wei, J, Rong, X, Liang, Z, Wang, X, Wu, Z & Gamal El-Din, M 2022, 'Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal', Bioresource Technology, vol. 359, 127346. https://doi.org/10.1016/j.biortech.2022.127346

TY - JOUR

T1 - Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal

AU - Zhou, Xiangtong

AU - Arslan, Muhammad

AU - Liu, Zhigang

AU - Li, Da

AU - Xi, Haipeng

AU - Feng, Yujie

AU - Li, Shanwei

AU - Wei, Jing

AU - Rong, Xinshan

AU - Liang, Zhishui

AU - Wang, Xiaochun

AU - Wu, Zhiren

AU - Gamal El-Din, Mohamed

PY - 2022/9

Y1 - 2022/9

N2 - In this study, baffled anaerobic–aerobic reactors (AOBRs) with modified basalt fiber (MBF) carriers and felt were used to treat domestic wastewater (DWW). The influent was first treated in anaerobic compartments, with the NH4+-N containing digestate refluxed into aerobic compartment for nitrification. The nitrified liquid was channeled to the anaerobic compartments for further denitrification. Under optimal conditions, AOBR with MBF carriers could remove 91% chemical oxygen demand (COD) and 81% total nitrogen (TN), with biomass production increased by 7.6%, 4.5% and 8.7% in three successive anaerobic compartments compared to the control. Biological viability analysis showed that live cells outnumbered dead cells in bio-nests. Metagenomics analysis showed that multiple metabolic pathways accounted for nitrogen conversion in anaerobic and aerobic compartments. More importantly, low COD/TN ratio digestate facilitated heterotrophic nitrification-aerobic denitrification (HN-AD) species growth in aerobic compartment. This study provides a promising strategy to source treatment of DWW from urban communities.

AB - In this study, baffled anaerobic–aerobic reactors (AOBRs) with modified basalt fiber (MBF) carriers and felt were used to treat domestic wastewater (DWW). The influent was first treated in anaerobic compartments, with the NH4+-N containing digestate refluxed into aerobic compartment for nitrification. The nitrified liquid was channeled to the anaerobic compartments for further denitrification. Under optimal conditions, AOBR with MBF carriers could remove 91% chemical oxygen demand (COD) and 81% total nitrogen (TN), with biomass production increased by 7.6%, 4.5% and 8.7% in three successive anaerobic compartments compared to the control. Biological viability analysis showed that live cells outnumbered dead cells in bio-nests. Metagenomics analysis showed that multiple metabolic pathways accounted for nitrogen conversion in anaerobic and aerobic compartments. More importantly, low COD/TN ratio digestate facilitated heterotrophic nitrification-aerobic denitrification (HN-AD) species growth in aerobic compartment. This study provides a promising strategy to source treatment of DWW from urban communities.

KW - Baffled anaerobic–aerobic reactor

KW - Bio-nest

KW - Biomass entrapment

KW - Domestic wastewater

KW - Metagenomics

KW - Nitrogen metabolic pathway

UR - https://www.scopus.com/pages/publications/85132352122

U2 - 10.1016/j.biortech.2022.127346

DO - 10.1016/j.biortech.2022.127346

M3 - 文章

C2 - 35605776

AN - SCOPUS:85132352122

SN - 0960-8524

VL - 359

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 127346

ER -

Low carbon-to-nitrogen ratio digestate from high-rate anaerobic baffled reactor facilitates heterotrophic/autotrophic nitrifiers involved in nitrogen removal

Abstract

UN SDGs

Keywords

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