PMID- 35728693
OWN - NLM
STAT- MEDLINE
DCOM- 20220727
LR  - 20220727
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 308
DP  - 2022 Sep 1
TI  - Micro-dynamic process of cadmium removal by microbial induced carbonate 
      precipitation.
PG  - 119585
LID - S0269-7491(22)00799-0 [pii]
LID - 10.1016/j.envpol.2022.119585 [doi]
AB  - Microbially induced carbonate precipitation (MICP) is a technique used 
      extensively to address heavy metal pollution but its micro-dynamic process 
      remains rarely explored. In this study, A novel Cd-tolerant ureolytic bacterium 
      DL-1 (Pseudochrobactrum sp.) was used to study the micro-dynamic process. With 
      conditions optimized by response surface methodology, the removal efficiency of 
      Cd(2+) could achieve 99.89%. Three components were separated and characterized in 
      the reaction mixture of Cd(2+) removal by MICP. The quantitative-dynamic 
      distribution of Cd(2+) in different components was revealed. Five synergistic 
      effects for Cd(2+) removal were found, including co-precipitation, adsorption by 
      precipitation, crystal precipitation on the cell surface, intracellular 
      accumulation and extracellular chemisorption. Importantly, during Cd(2+) removal 
      by MICP, the phenomenon that crystalline nanoparticles adhere to the cell 
      surface, but without any micrometer-sized precipitation encapsulated bacterial 
      cells was observed. This indicated that the previously studied model of bacterial 
      cells as nucleation sites for metal cation precipitation and crystal growth is 
      oversimplified. Our findings provided valuable insights into the mechanism of 
      heavy metals removal by MICP, and a more straightforward method for studying 
      biomineralization-related dynamic process.
CI  - Copyright (c) 2022 Elsevier Ltd. All rights reserved.
FAU - Sheng, Mingping
AU  - Sheng M
AD  - Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, 
      College of Life Science, Sichuan University, Chengdu, 610065, Sichuan, PR China.
FAU - Peng, Dinghua
AU  - Peng D
AD  - Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, 
      College of Life Science, Sichuan University, Chengdu, 610065, Sichuan, PR China.
FAU - Luo, Shihua
AU  - Luo S
AD  - Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, 
      College of Life Science, Sichuan University, Chengdu, 610065, Sichuan, PR China.
FAU - Ni, Ting
AU  - Ni T
AD  - School of Life Science, Shanxi University, Taiyuan, 03006, PR China.
FAU - Luo, Huanyan
AU  - Luo H
AD  - Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, 
      College of Life Science, Sichuan University, Chengdu, 610065, Sichuan, PR China.
FAU - Zhang, Renfeng
AU  - Zhang R
AD  - Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, 
      College of Life Science, Sichuan University, Chengdu, 610065, Sichuan, PR China.
FAU - Wen, Yu
AU  - Wen Y
AD  - Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, 
      College of Life Science, Sichuan University, Chengdu, 610065, Sichuan, PR China.
FAU - Xu, Heng
AU  - Xu H
AD  - Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, 
      College of Life Science, Sichuan University, Chengdu, 610065, Sichuan, PR China; 
      Key Laboratory of Environment Protection, Soil Ecological Protection and 
      Pollution Control, Sichuan University & Department of Ecology and Environment of 
      Sichuan, Chengdu, 610065, Sichuan, PR China. Electronic address: 
      xuheng64@sina.com.
LA  - eng
PT  - Journal Article
DEP - 20220618
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Carbonates)
RN  - 0 (Metals, Heavy)
RN  - 00BH33GNGH (Cadmium)
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - Bacteria/metabolism
MH  - *Cadmium/metabolism
MH  - Calcium Carbonate/chemistry
MH  - Carbonates/chemistry
MH  - *Metals, Heavy/metabolism
OTO - NOTNLM
OT  - Cadmium removal
OT  - Differential centrifugation
OT  - MICP
OT  - Micro-dynamic process
EDAT- 2022/06/22 06:00
MHDA- 2022/07/28 06:00
CRDT- 2022/06/21 19:24
PHST- 2022/02/28 00:00 [received]
PHST- 2022/05/31 00:00 [revised]
PHST- 2022/06/03 00:00 [accepted]
PHST- 2022/06/22 06:00 [pubmed]
PHST- 2022/07/28 06:00 [medline]
PHST- 2022/06/21 19:24 [entrez]
AID - S0269-7491(22)00799-0 [pii]
AID - 10.1016/j.envpol.2022.119585 [doi]
PST - ppublish
SO  - Environ Pollut. 2022 Sep 1;308:119585. doi: 10.1016/j.envpol.2022.119585. Epub 
      2022 Jun 18.