PMID- 31622406
OWN - NLM
STAT- MEDLINE
DCOM- 20200316
LR  - 20200316
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 14
IP  - 10
DP  - 2019
TI  - Microbial induced solidification and stabilization of municipal solid waste 
      incineration fly ash with high alkalinity and heavy metal toxicity.
PG  - e0223900
LID - 10.1371/journal.pone.0223900 [doi]
LID - e0223900
AB  - This paper presents an experimental study on the applicability of microbial 
      induced carbonate precipitation (MICP) to treat municipal solid waste 
      incineration (MSWI) fly ash with high alkalinity and heavy metal toxicity. The 
      experiments were carried out on fly ashes A and B produced from incineration 
      processes of mechanical grate furnace and circulating fluidized bed, 
      respectively. The results showed that both types of fly ashes contained high CaO 
      content, which could supply sufficient endogenous Ca for MICP treatment. 
      Moreover, S. pasteurii can survive from high alkalinity and heavy metal toxicity 
      of fly ash solution. Further, the unconfined compressive strength (UCS) of MICP 
      treated fly ashes A and B reached 0.385MPa and 0.709 MPa, respectively. The MICP 
      treatment also resulted in a reduction in the leaching toxicity of heavy metals, 
      especially for Cu, Pb and Hg. MICP had a higher solidification and stabilization 
      effect on fly ash B, which has finer particle size and higher Ca content. These 
      findings shone a light on the possibility of using MICP technique as a suitable 
      and efficient tool to treat the MSWI fly ash.
FAU - Chen, Ping
AU  - Chen P
AD  - School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, 
      Hangzhou, China.
FAU - Zheng, Hao
AU  - Zheng H
AD  - School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, 
      Hangzhou, China.
FAU - Xu, Hui
AU  - Xu H
AUID- ORCID: 0000-0001-9283-8975
AD  - School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, 
      Hangzhou, China.
FAU - Gao, Yan-Xu
AU  - Gao YX
AD  - School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, 
      Hangzhou, China.
FAU - Ding, Xiao-Qing
AU  - Ding XQ
AD  - School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, 
      Hangzhou, China.
FAU - Ma, Mei-Ling
AU  - Ma ML
AD  - School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, 
      Hangzhou, China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20191017
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
RN  - 0 (Coal Ash)
RN  - 0 (Metals, Heavy)
RN  - 0 (Particulate Matter)
RN  - 0 (Solid Waste)
SB  - IM
MH  - Bacteria/*growth & development/metabolism
MH  - Coal Ash/toxicity
MH  - Incineration
MH  - Metals, Heavy/*toxicity
MH  - Particulate Matter
MH  - Refuse Disposal
MH  - Solid Waste/*analysis
PMC - PMC6797113
COIS- The authors have declared that no competing interests exist.
EDAT- 2019/10/18 06:00
MHDA- 2020/03/17 06:00
PMCR- 2019/10/17
CRDT- 2019/10/18 06:00
PHST- 2019/07/18 00:00 [received]
PHST- 2019/10/01 00:00 [accepted]
PHST- 2019/10/18 06:00 [entrez]
PHST- 2019/10/18 06:00 [pubmed]
PHST- 2020/03/17 06:00 [medline]
PHST- 2019/10/17 00:00 [pmc-release]
AID - PONE-D-19-20280 [pii]
AID - 10.1371/journal.pone.0223900 [doi]
PST - epublish
SO  - PLoS One. 2019 Oct 17;14(10):e0223900. doi: 10.1371/journal.pone.0223900. 
      eCollection 2019.