Effects of bulking agents on greenhouse gases and related genes in sludge composting

Ke Wang; Mengfei Du; Zhe Wang; Huimin Liu; Yan Zhao; Chuandong Wu; Yu Tian

doi:10.1016/j.biortech.2021.126270

Effects of bulking agents on greenhouse gases and related genes in sludge composting

Ke Wang
, Mengfei Du
, Zhe Wang
, Huimin Liu
, Yan Zhao
, Chuandong Wu
, Yu Tian^*

^*Corresponding author for this work

School of Environment

Harbin Institute of Technology
Ltd.

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

32 Scopus citations

Abstract

The effect of organic bulking agents on CO₂, NH₃, N₂O and CH₄ emission and related genes was evaluated in 40 days sludge composting with wood chip, wheat straw and rice husk, respectively. The results showed wood chip had the highest C/N of 111.3, total porosity of 93.13% and aeration porosity of 78.98% among three bulking agents. Wheat straw had the highest water-holding porosity of 25.62%, which could be critical factor increasing CH₄ production and reducing NH₃ emission. Moreover, there was no significant difference in N₂O emission rates in three composting systems with three bulking agents. RDA analysis showed a negative correlation between mcrA and NH + 4-N. Nitrate content in raw feedstock was dominant factor limiting N₂O yield due to low amoA. The continuous increase of oxidation–reduction potential was significantly positive correlated with pmoA and negative correlation with nirK and norB, which reduced N₂O and CH₄ production in the curing period.

Original language	English
Article number	126270
Journal	Bioresource Technology
Volume	344
DOIs	https://doi.org/10.1016/j.biortech.2021.126270
State	Published - Jan 2022

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Ammonia
Bulking agent
Composting
Methane
Nitrous oxide

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10.1016/j.biortech.2021.126270

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@article{f1020fda870a47c6ababd94005534582,

title = "Effects of bulking agents on greenhouse gases and related genes in sludge composting",

abstract = "The effect of organic bulking agents on CO2, NH3, N2O and CH4 emission and related genes was evaluated in 40 days sludge composting with wood chip, wheat straw and rice husk, respectively. The results showed wood chip had the highest C/N of 111.3, total porosity of 93.13\% and aeration porosity of 78.98\% among three bulking agents. Wheat straw had the highest water-holding porosity of 25.62\%, which could be critical factor increasing CH4 production and reducing NH3 emission. Moreover, there was no significant difference in N2O emission rates in three composting systems with three bulking agents. RDA analysis showed a negative correlation between mcrA and NH + 4-N. Nitrate content in raw feedstock was dominant factor limiting N2O yield due to low amoA. The continuous increase of oxidation–reduction potential was significantly positive correlated with pmoA and negative correlation with nirK and norB, which reduced N2O and CH4 production in the curing period.",

keywords = "Ammonia, Bulking agent, Composting, Methane, Nitrous oxide",

author = "Ke Wang and Mengfei Du and Zhe Wang and Huimin Liu and Yan Zhao and Chuandong Wu and Yu Tian",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

month = jan,

doi = "10.1016/j.biortech.2021.126270",

language = "英语",

volume = "344",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Effects of bulking agents on greenhouse gases and related genes in sludge composting

AU - Wang, Ke

AU - Du, Mengfei

AU - Wang, Zhe

AU - Liu, Huimin

AU - Zhao, Yan

AU - Wu, Chuandong

AU - Tian, Yu

PY - 2022/1

Y1 - 2022/1

N2 - The effect of organic bulking agents on CO2, NH3, N2O and CH4 emission and related genes was evaluated in 40 days sludge composting with wood chip, wheat straw and rice husk, respectively. The results showed wood chip had the highest C/N of 111.3, total porosity of 93.13% and aeration porosity of 78.98% among three bulking agents. Wheat straw had the highest water-holding porosity of 25.62%, which could be critical factor increasing CH4 production and reducing NH3 emission. Moreover, there was no significant difference in N2O emission rates in three composting systems with three bulking agents. RDA analysis showed a negative correlation between mcrA and NH + 4-N. Nitrate content in raw feedstock was dominant factor limiting N2O yield due to low amoA. The continuous increase of oxidation–reduction potential was significantly positive correlated with pmoA and negative correlation with nirK and norB, which reduced N2O and CH4 production in the curing period.

AB - The effect of organic bulking agents on CO2, NH3, N2O and CH4 emission and related genes was evaluated in 40 days sludge composting with wood chip, wheat straw and rice husk, respectively. The results showed wood chip had the highest C/N of 111.3, total porosity of 93.13% and aeration porosity of 78.98% among three bulking agents. Wheat straw had the highest water-holding porosity of 25.62%, which could be critical factor increasing CH4 production and reducing NH3 emission. Moreover, there was no significant difference in N2O emission rates in three composting systems with three bulking agents. RDA analysis showed a negative correlation between mcrA and NH + 4-N. Nitrate content in raw feedstock was dominant factor limiting N2O yield due to low amoA. The continuous increase of oxidation–reduction potential was significantly positive correlated with pmoA and negative correlation with nirK and norB, which reduced N2O and CH4 production in the curing period.

KW - Ammonia

KW - Bulking agent

KW - Composting

KW - Methane

KW - Nitrous oxide

UR - https://www.scopus.com/pages/publications/85120490597

U2 - 10.1016/j.biortech.2021.126270

DO - 10.1016/j.biortech.2021.126270

M3 - 文章

C2 - 34740796

AN - SCOPUS:85120490597

SN - 0960-8524

VL - 344

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 126270

ER -

Effects of bulking agents on greenhouse gases and related genes in sludge composting

Abstract

UN SDGs

Keywords

Access to Document

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