PMID- 34740156
OWN - NLM
STAT- MEDLINE
DCOM- 20220126
LR  - 20240214
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Print)
IS  - 0304-3894 (Linking)
VI  - 424
IP  - Pt C
DP  - 2022 Feb 15
TI  - Investigating the potential for microbially induced carbonate precipitation to 
      treat mine waste.
PG  - 127490
LID - S0304-3894(21)02458-4 [pii]
LID - 10.1016/j.jhazmat.2021.127490 [doi]
AB  - In this study, the feasibility of promoting microbially induced carbonate 
      precipitation (MICP) in mine waste piles by using an environmental bacterial 
      enrichment is explored, with goals to reduce metals and acid leaching. MICP has 
      been explored for remediation applications and stabilization of mine waste. Here, 
      we utilize a native bacterial enrichment to promote MICP on seven mine waste 
      samples with variability in acid production and extent of toxic metal leaching. 
      During fifteen applications of MICP solutions and bacteria on waste rock in 
      bench-scale columns, calcium carbonate formed on grain surfaces within all waste 
      samples, though microscopy revealed uneven distribution of CaCO(3) coating. The 
      effluent from acid-producing wastes increased in pH during MICP treatment. MICP 
      performance was evaluated with humidity cell and synthetic precipitation leaching 
      procedure (SPLP) tests. Leaching tests revealed reductions in Cd, Pb and Zn 
      concentrations in leachate of all but one sample, mixed results for Cu, and As 
      increasing in all but one leachate sample after treatment. MICP technology has 
      potential for coating mine waste and reducing release of acid and some metals. 
      This study provides a laboratory assessment of MICP feasibility for stabilizing 
      mine waste in situ and mitigating release of toxic metals into the environment.
CI  - Copyright (c) 2021 Elsevier B.V. All rights reserved.
FAU - Proudfoot, Dylan
AU  - Proudfoot D
AD  - Montana State University, Civil Engineering Department, Bozeman, MT, USA.
FAU - Brooks, Loran
AU  - Brooks L
AD  - Montana Technological University, Environmental Engineering Department, Butte, 
      MT, USA.
FAU - Gammons, Christopher H
AU  - Gammons CH
AD  - Montana Technological University, Geological Engineering Department, Butte, MT, 
      USA.
FAU - Barth, Edwin
AU  - Barth E
AD  - Center for Environmental Solutions and Emergency Response, Environmental 
      Protection Agency Office of Research and Development, Cincinnati, OH, USA.
FAU - Bless, Diana
AU  - Bless D
AD  - Center for Environmental Solutions and Emergency Response, Environmental 
      Protection Agency Office of Research and Development, Cincinnati, OH, USA.
FAU - Nagisetty, Raja M
AU  - Nagisetty RM
AD  - Montana Technological University, Environmental Engineering Department, Butte, 
      MT, USA.
FAU - Lauchnor, Ellen G
AU  - Lauchnor EG
AD  - Montana State University, Civil Engineering Department, Bozeman, MT, USA. 
      Electronic address: ellen.lauchnor@montana.edu.
LA  - eng
GR  - EP-C-15-010/EPA/EPA/United States
GR  - EPA999999/ImEPA/Intramural EPA/United States
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20211015
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Carbonates)
RN  - 0 (Metals)
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - Bacteria
MH  - *Calcium Carbonate
MH  - *Carbonates
MH  - Metals
PMC - PMC8822478
MID - NIHMS1768661
OTO - NOTNLM
OT  - Bacterial ureolysis
OT  - Calcium carbonate
OT  - Leaching tests
OT  - Waste rock
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2021/11/06 06:00
MHDA- 2022/01/27 06:00
PMCR- 2023/02/15
CRDT- 2021/11/05 20:20
PHST- 2021/06/11 00:00 [received]
PHST- 2021/10/01 00:00 [revised]
PHST- 2021/10/08 00:00 [accepted]
PHST- 2021/11/06 06:00 [pubmed]
PHST- 2022/01/27 06:00 [medline]
PHST- 2021/11/05 20:20 [entrez]
PHST- 2023/02/15 00:00 [pmc-release]
AID - S0304-3894(21)02458-4 [pii]
AID - 10.1016/j.jhazmat.2021.127490 [doi]
PST - ppublish
SO  - J Hazard Mater. 2022 Feb 15;424(Pt C):127490. doi: 10.1016/j.jhazmat.2021.127490. 
      Epub 2021 Oct 15.