PMID- 37858687
OWN - NLM
STAT- MEDLINE
DCOM- 20231127
LR  - 20231127
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 239
IP  - Pt 2
DP  - 2023 Dec 15
TI  - Applying the first microcapsule-based self-healing microbial-induced calcium 
      carbonate materials to prevent the migration of Pb ions.
PG  - 117423
LID - S0013-9351(23)02227-2 [pii]
LID - 10.1016/j.envres.2023.117423 [doi]
AB  - Lead (Pb) accumulation can lead to serious threats to surrounding environments 
      and damage to the liver and kidneys. In the past few years, microbial-induced 
      carbonate precipitation (MICP) technology has been widely applied to achieve Pb 
      immobilization due to its environmentally friendly nature. However, harsh pH 
      conditions can cause the instability of the carbonate precipitation to degrade or 
      dissolve, increasing the potential of Pb(2+) migration into nearby environments. 
      In this study, microcapsule-based self-healing microbial-induced calcium 
      carbonate (MICC) materials were applied to prevent Pb migration. The highest 
      sporulation rate of 95.8% was attained at 7 g/L yeast extract, 10 g/L NH4Cl, and 
      3.6 g/L Mn(2+). In the germination phase, the microcapsule not only prevented the 
      bacterial spores from being threatened by the acid treatment but secured their 
      growth and reproduction. Micro analysis also revealed that cerussite, calcite, 
      and aragonite minerals were present, while extracellular polymeric substances 
      (EPSs) were identified via Fourier transform infrared spectroscopy (FTIR). These 
      results confirm their involvement in combining Pb(2+) and Ca(2+). The 
      immobilization efficiency of above 90% applied to MICC materials was attained, 
      while it of below 5% applied to no MICC use was attained. The findings explore 
      the potential of applying microcapsule-based self-healing MICC materials to 
      prevent Pb ion migration when the calcium carbonate degrades under harsh pH 
      conditions.
CI  - Copyright (c) 2023 Elsevier Inc. All rights reserved.
FAU - Xue, Zhong-Fei
AU  - Xue ZF
AD  - School of Civil Engineering, Xi'an University of Architecture and Technology, 
      Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground 
      Space Engineering (XAUAT), Xi'an, 710055, China. Electronic address: 
      xuezhongfei@xauat.edu.cn.
FAU - Cheng, Wen-Chieh
AU  - Cheng WC
AD  - School of Civil Engineering, Xi'an University of Architecture and Technology, 
      Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground 
      Space Engineering (XAUAT), Xi'an, 710055, China. Electronic address: 
      w-c.cheng@xauat.edu.cn.
FAU - Wang, Lin
AU  - Wang L
AD  - School of Civil Engineering, Xi'an University of Architecture and Technology, 
      Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground 
      Space Engineering (XAUAT), Xi'an, 710055, China. Electronic address: 
      wanglin@xauat.edu.cn.
FAU - Qin, Peng
AU  - Qin P
AD  - School of Civil Engineering, Xi'an University of Architecture and Technology, 
      Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground 
      Space Engineering (XAUAT), Xi'an, 710055, China. Electronic address: 
      qinpeng@xauat.edu.cn.
FAU - Xie, Yi-Xin
AU  - Xie YX
AD  - School of Civil Engineering, Xi'an University of Architecture and Technology, 
      Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground 
      Space Engineering (XAUAT), Xi'an, 710055, China. Electronic address: 
      xieyixin@xauat.edu.cn.
FAU - Hu, Wenle
AU  - Hu W
AD  - School of Civil Engineering, Xi'an University of Architecture and Technology, 
      Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground 
      Space Engineering (XAUAT), Xi'an, 710055, China. Electronic address: 
      wenlehu@xauat.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20231018
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - H0G9379FGK (Calcium Carbonate)
RN  - 2P299V784P (Lead)
RN  - 0 (Capsules)
RN  - 0 (Carbonates)
RN  - 0 (Minerals)
SB  - IM
MH  - *Calcium Carbonate/chemistry/metabolism
MH  - *Lead
MH  - Capsules
MH  - Carbonates
MH  - Minerals
OTO - NOTNLM
OT  - Immobilization efficiency
OT  - Lead
OT  - Microcapsule
OT  - Precipitation kinetics
OT  - Spore germination rate
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- 2023/10/20 06:42
MHDA- 2023/11/27 12:42
CRDT- 2023/10/20 00:32
PHST- 2023/07/19 00:00 [received]
PHST- 2023/10/12 00:00 [revised]
PHST- 2023/10/15 00:00 [accepted]
PHST- 2023/11/27 12:42 [medline]
PHST- 2023/10/20 06:42 [pubmed]
PHST- 2023/10/20 00:32 [entrez]
AID - S0013-9351(23)02227-2 [pii]
AID - 10.1016/j.envres.2023.117423 [doi]
PST - ppublish
SO  - Environ Res. 2023 Dec 15;239(Pt 2):117423. doi: 10.1016/j.envres.2023.117423. 
      Epub 2023 Oct 18.