PMID- 36796605
OWN - NLM
STAT- MEDLINE
DCOM- 20230314
LR  - 20230322
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 224
DP  - 2023 May 1
TI  - Sodium citrate increases the aggregation capacity of calcium ions during 
      microbial mineralization to accelerate the formation of calcium carbonate.
PG  - 115479
LID - S0013-9351(23)00271-2 [pii]
LID - 10.1016/j.envres.2023.115479 [doi]
AB  - The microbially induced carbonate precipitation (MICP) technique is widely used 
      in soil heavy metal pollution control. Microbial mineralization involves extended 
      mineralization times and slow crystallization rates. Thus, it is important to 
      discover a method to accelerate mineralization. In this study, we selected six 
      nucleating agents to screen and investigated the mineralization mechanism using 
      polarized light microscopy, scanning electron microscopy, X-ray diffraction and 
      Fourier-transform infrared spectroscopy. The results showed that sodium citrate 
      removed 90.1% Pb better than traditional MICP and generated the highest amount of 
      precipitation. Interestingly, due to the addition of sodium citrate (NaCit), the 
      rate of crystallization increased and vaterite was stabilized. Moreover, we 
      constructed a possible model to explain that NaCit increases the aggregation 
      capacity of calcium ions during microbial mineralization to accelerate the 
      formation of calcium carbonate (CaCO(3)). Thus, sodium citrate can increase the 
      rate of MICP bioremediation, which is important for improving MICP efficiency.
CI  - Copyright (c) 2023 The Authors. Published by Elsevier Inc. All rights reserved.
FAU - Chen, Minjie
AU  - Chen M
AD  - School of Energy and Environment, Inner Mongolia University of Science and 
      Technology, Baotou, 014010, People's Republic of China; Inner Mongolia 
      Engineering Research Center of Evaluation and Restoration in the Mining 
      Ecological Environments, Baotou, 014010, People's Republic of China.
FAU - Cao, Dan
AU  - Cao D
AD  - School of Energy and Environment, Inner Mongolia University of Science and 
      Technology, Baotou, 014010, People's Republic of China; Inner Mongolia 
      Engineering Research Center of Evaluation and Restoration in the Mining 
      Ecological Environments, Baotou, 014010, People's Republic of China.
FAU - Li, Bowen
AU  - Li B
AD  - School of Energy and Environment, Inner Mongolia University of Science and 
      Technology, Baotou, 014010, People's Republic of China; Inner Mongolia 
      Engineering Research Center of Evaluation and Restoration in the Mining 
      Ecological Environments, Baotou, 014010, People's Republic of China.
FAU - Pang, Hao
AU  - Pang H
AD  - School of Energy and Environment, Inner Mongolia University of Science and 
      Technology, Baotou, 014010, People's Republic of China; Inner Mongolia 
      Engineering Research Center of Evaluation and Restoration in the Mining 
      Ecological Environments, Baotou, 014010, People's Republic of China.
FAU - Zheng, Chunli
AU  - Zheng C
AD  - School of Energy and Environment, Inner Mongolia University of Science and 
      Technology, Baotou, 014010, People's Republic of China; Inner Mongolia 
      Engineering Research Center of Evaluation and Restoration in the Mining 
      Ecological Environments, Baotou, 014010, People's Republic of China; School of 
      Resource and Environmental Engineering, Shanghai Polytechnic University, 
      Shanghai, 310014, People's Republic of China. Electronic address: 
      clzheng@sspu.edu.cn.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20230214
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - SY7Q814VUP (Calcium)
RN  - H0G9379FGK (Calcium Carbonate)
RN  - 0 (Ions)
RN  - 1Q73Q2JULR (Sodium Citrate)
RN  - 0 (Soil Pollutants)
SB  - IM
MH  - Biodegradation, Environmental
MH  - *Calcium
MH  - *Calcium Carbonate/chemistry
MH  - Ions
MH  - *Sodium Citrate/chemistry
MH  - *Soil Microbiology
MH  - Environmental Restoration and Remediation/methods
MH  - Soil Pollutants
OTO - NOTNLM
OT  - CaCO(3)
OT  - Heavy metals
OT  - Microbially induced carbonate precipitation (MICP)
OT  - Nucleation
OT  - Pb
OT  - Sodium citrate (NaCit)
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- 2023/02/17 06:00
MHDA- 2023/03/15 06:00
CRDT- 2023/02/16 19:26
PHST- 2022/12/26 00:00 [received]
PHST- 2023/01/25 00:00 [revised]
PHST- 2023/02/09 00:00 [accepted]
PHST- 2023/02/17 06:00 [pubmed]
PHST- 2023/03/15 06:00 [medline]
PHST- 2023/02/16 19:26 [entrez]
AID - S0013-9351(23)00271-2 [pii]
AID - 10.1016/j.envres.2023.115479 [doi]
PST - ppublish
SO  - Environ Res. 2023 May 1;224:115479. doi: 10.1016/j.envres.2023.115479. Epub 2023 
      Feb 14.