Reduction of ammonia production in the biocementation process for sand using a new biocement

Xiaoniu Yu; Jian Chu; Yang Yang; Chunxiang Qian

doi:10.1016/j.jclepro.2020.124928

Reduction of ammonia production in the biocementation process for sand using a new biocement

Xiaoniu Yu, Jian Chu^*, Yang Yang, Chunxiang Qian

^*Corresponding author for this work

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

49 Citations (Scopus)

Abstract

Biocementation using a microbially-induced carbonate precipitation (MICP) process has become a new method for soil improvement. However, this method produces ammonia gas which is not desirable. A new biocementation method using a microbially-induced struvite precipitation (MISP) process is proposed in this paper. The main cementation components produced by this method are struvite and basic magnesium phosphate as identified using X-ray diffraction (XRD). This new method can reduce the amount of ammonia discharge by more than 8 times. Sand treated using this method can reach an unconfined compressive strength of more than 1.47 MPa after three rounds of treatments.

Original language	English
Article number	124928
Journal	Journal of Cleaner Production
Volume	286
DOIs	https://doi.org/10.1016/j.jclepro.2020.124928
Publication status	Published - Mar 1 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

ASJC Scopus Subject Areas

Renewable Energy, Sustainability and the Environment
General Environmental Science
Strategy and Management
Industrial and Manufacturing Engineering

Keywords

Ammonia gas
Biocement
MICP
MISP
Sand

UN SDGs

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

Access to Document

10.1016/j.jclepro.2020.124928

Cite this

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title = "Reduction of ammonia production in the biocementation process for sand using a new biocement",

abstract = "Biocementation using a microbially-induced carbonate precipitation (MICP) process has become a new method for soil improvement. However, this method produces ammonia gas which is not desirable. A new biocementation method using a microbially-induced struvite precipitation (MISP) process is proposed in this paper. The main cementation components produced by this method are struvite and basic magnesium phosphate as identified using X-ray diffraction (XRD). This new method can reduce the amount of ammonia discharge by more than 8 times. Sand treated using this method can reach an unconfined compressive strength of more than 1.47 MPa after three rounds of treatments.",

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T1 - Reduction of ammonia production in the biocementation process for sand using a new biocement

AU - Yu, Xiaoniu

AU - Chu, Jian

AU - Yang, Yang

AU - Qian, Chunxiang

PY - 2021/3/1

Y1 - 2021/3/1

N2 - Biocementation using a microbially-induced carbonate precipitation (MICP) process has become a new method for soil improvement. However, this method produces ammonia gas which is not desirable. A new biocementation method using a microbially-induced struvite precipitation (MISP) process is proposed in this paper. The main cementation components produced by this method are struvite and basic magnesium phosphate as identified using X-ray diffraction (XRD). This new method can reduce the amount of ammonia discharge by more than 8 times. Sand treated using this method can reach an unconfined compressive strength of more than 1.47 MPa after three rounds of treatments.

AB - Biocementation using a microbially-induced carbonate precipitation (MICP) process has become a new method for soil improvement. However, this method produces ammonia gas which is not desirable. A new biocementation method using a microbially-induced struvite precipitation (MISP) process is proposed in this paper. The main cementation components produced by this method are struvite and basic magnesium phosphate as identified using X-ray diffraction (XRD). This new method can reduce the amount of ammonia discharge by more than 8 times. Sand treated using this method can reach an unconfined compressive strength of more than 1.47 MPa after three rounds of treatments.

KW - Ammonia gas

KW - Biocement

KW - MICP

KW - MISP

KW - Sand

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Reduction of ammonia production in the biocementation process for sand using a new biocement

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

UN SDGs

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