PMID- 35913918
OWN - NLM
STAT- MEDLINE
DCOM- 20220803
LR  - 20220826
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 17
IP  - 8
DP  - 2022
TI  - Experimental study on tailings cementation by MICP technique with immersion 
      curing.
PG  - e0272281
LID - 10.1371/journal.pone.0272281 [doi]
LID - e0272281
AB  - The filling mining method is an effective method for controlling ground stress 
      and preventing surface subsidence in the mining field during exploitation of 
      underground resources. Tailings can be utilized as the filling material, so as to 
      realize the reuse of industrial waste. However, utilization of the traditional 
      Portland cement as the cementing material for tailings leads to groundwater 
      pollution. In addition, production of Portland cement results in consumption of a 
      great amount of ore and air pollution. In this paper, a tailings cementation 
      method by using the microbial induced calcite precipitation (MICP) technique with 
      immersion curing is proposed. Tailings are cemented by the MICP technique with 
      aerobic bacteria (Sporosarcina pasteurii) under a soaked curing environment. The 
      variable control method is applied to investigate the factors influencing the 
      cementation effects by the MICP technique with Sporosarcina pasteurii, including 
      the bacterial solution concentration, the cementing solution concentration, the 
      particle size of tailings, and the curing temperature. The results indicate that: 
      when OD600 of the Sporosarcina pasteurii solution is 1.6, the urea concentration 
      in the cementing solution is 0.75 mol/L, the tailings are raw materials without 
      grinding, and the curing temperature is 30 degrees C, the cementation effect is the best. 
      In view of uneven calcification during MICP with Sporosarcina pasteurii, mixed 
      Sporosarcina pasteurii and Castellaniella denitrificans are used for tailings 
      cementation. Higher strength of cemented tailings is achieved. It is proved that 
      the MICP technique with mixed aerobic bacteria and facultative anaerobes is an 
      effective method for tailings cementation.
FAU - Jin, Changyu
AU  - Jin C
AUID- ORCID: 0000-0001-5723-6282
AD  - Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, 
      Northeastern University, Shenyang, Liaoning, 110004, China.
FAU - Liu, Huiyang
AU  - Liu H
AD  - Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, 
      Northeastern University, Shenyang, Liaoning, 110004, China.
FAU - Guo, Mingxiao
AU  - Guo M
AD  - Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, 
      Northeastern University, Shenyang, Liaoning, 110004, China.
FAU - Wang, Yunfeng
AU  - Wang Y
AD  - Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, 
      Northeastern University, Shenyang, Liaoning, 110004, China.
FAU - Zhu, Jinyao
AU  - Zhu J
AD  - Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, 
      Northeastern University, Shenyang, Liaoning, 110004, China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20220801
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
RN  - H0G9379FGK (Calcium Carbonate)
RN  - Sporosarcina pasteurii
SB  - IM
MH  - Bacteria
MH  - *Calcium Carbonate
MH  - Cementation
MH  - Immersion
MH  - *Sporosarcina
PMC - PMC9342764
COIS- The authors have declared that no competing interests exist.
EDAT- 2022/08/02 06:00
MHDA- 2022/08/04 06:00
PMCR- 2022/08/01
CRDT- 2022/08/01 13:33
PHST- 2021/12/27 00:00 [received]
PHST- 2022/07/16 00:00 [accepted]
PHST- 2022/08/01 13:33 [entrez]
PHST- 2022/08/02 06:00 [pubmed]
PHST- 2022/08/04 06:00 [medline]
PHST- 2022/08/01 00:00 [pmc-release]
AID - PONE-D-21-40689 [pii]
AID - 10.1371/journal.pone.0272281 [doi]
PST - epublish
SO  - PLoS One. 2022 Aug 1;17(8):e0272281. doi: 10.1371/journal.pone.0272281. 
      eCollection 2022.