PMID- 38128598
OWN - NLM
STAT- MEDLINE
DCOM- 20240219
LR  - 20240219
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 244
DP  - 2024 Mar 1
TI  - Microscopic deposition-property relationships in microbial-induced consolidation 
      of coal dusts.
PG  - 117956
LID - S0013-9351(23)02760-3 [pii]
LID - 10.1016/j.envres.2023.117956 [doi]
AB  - In recent years, the preparation of new microbial dust suppressants based on 
      microbial induced carbonate precipitation (MICP) technology through enriched 
      urease-producing microbial communities has become a new topic in the field of 
      coal dust control. The deposition of CaCO(3) was the key to suppress coal dust. 
      However, deposition characteristics in the field is not sufficient and the 
      relationship between deposition characteristics and erosion resistance is not 
      clear, which hinders the development of engineering application of new microbial 
      dust suppressant. Therefore, based on X-CT technology, this paper observed and 
      quantified micro-deposition of bio-consolidated coal dust with different calcium 
      sources. Furthermore, a conceptual framework for deposition was proposed and its 
      correlation with erosion resistance was revealed. The results showed that CaCO(3) 
      induced by calcium chloride and calcium lactate was aggregate deposited. 
      Aggregate deposited CaCO(3) was small in volume, showed the distribution of 
      aggregation in the central area and loose outside, and mosaiced pores. CaCO(3) 
      induced by calcium nitrate was surface deposition due to attached biomass. 
      Surface deposition was mostly large volume CaCO(3) expanding from the inside out, 
      which could cover coal dust to a high degree and completely cemented pores. In 
      addition, the threshold detachment velocity of coal dust cemented by surface 
      deposition was increased by 17.6-19.1% compared to aggregate deposition. This 
      depended on the abundance and strength of CaCO(3) bonding between coal dust 
      particles under different deposition. The two-factor model based on porosity and 
      CaCO(3) coverage can well express relationship between erosion resistance and 
      depositional characteristics. Those results will help the engineering application 
      of MICP technology in coal dust suppression.
CI  - Copyright (c) 2023 Elsevier Inc. All rights reserved.
FAU - Wang, Qingshan
AU  - Wang Q
AD  - College of Safety and Environmental Engineering, Shandong University of Science 
      and Technology, Qingdao, Shandong, 266590, China; Key Laboratory of Mining 
      Disaster Prevention and Control, Shandong University of Science and Technology, 
      Qingdao, Shandong, 266590, China.
FAU - Hu, Xiangming
AU  - Hu X
AD  - College of Safety and Environmental Engineering, Shandong University of Science 
      and Technology, Qingdao, Shandong, 266590, China; Key Laboratory of Mining 
      Disaster Prevention and Control, Shandong University of Science and Technology, 
      Qingdao, Shandong, 266590, China.
FAU - Zhao, Yanyun
AU  - Zhao Y
AD  - College of Safety and Environmental Engineering, Shandong University of Science 
      and Technology, Qingdao, Shandong, 266590, China; Key Laboratory of Mining 
      Disaster Prevention and Control, Shandong University of Science and Technology, 
      Qingdao, Shandong, 266590, China; Institute of Yellow River Delta Earth Surface 
      Processes and Ecological Integrity, Shandong University of Science and 
      Technology, Qingdao, Shandong, 266590, China. Electronic address: 
      skd995627@sdust.edu.cn.
FAU - Jiang, Ningjun
AU  - Jiang N
AD  - Institute of Geotechnical Engineering, Southeast University, Nanjing, China; 
      Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 
      Honolulu, USA.
FAU - Yu, Xiaoniu
AU  - Yu X
AD  - Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing, 
      211189, China; School of Civil and Environmental Engineering, Nanyang 
      Technological University, Singapore, 639798, Singapore.
FAU - Feng, Yue
AU  - Feng Y
AD  - College of Safety and Environmental Engineering, Shandong University of Science 
      and Technology, Qingdao, Shandong, 266590, China; Key Laboratory of Mining 
      Disaster Prevention and Control, Shandong University of Science and Technology, 
      Qingdao, Shandong, 266590, China.
FAU - Zhang, Juan
AU  - Zhang J
AD  - College of Safety and Environmental Engineering, Shandong University of Science 
      and Technology, Qingdao, Shandong, 266590, China; Key Laboratory of Mining 
      Disaster Prevention and Control, Shandong University of Science and Technology, 
      Qingdao, Shandong, 266590, China.
LA  - eng
PT  - Journal Article
DEP - 20231219
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - 0 (Dust)
RN  - 0 (Coal)
RN  - 0 (Minerals)
RN  - SY7Q814VUP (Calcium)
SB  - IM
MH  - *Dust/analysis
MH  - *Coal
MH  - Minerals
MH  - Biomass
MH  - Calcium
OTO - NOTNLM
OT  - CT scanning
OT  - Coal dust
OT  - Deposition characteristics
OT  - Erosion resistance
OT  - Microbial induced carbonate precipitation
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- 2023/12/22 00:42
MHDA- 2024/02/19 06:44
CRDT- 2023/12/21 19:23
PHST- 2023/11/02 00:00 [received]
PHST- 2023/12/07 00:00 [revised]
PHST- 2023/12/14 00:00 [accepted]
PHST- 2024/02/19 06:44 [medline]
PHST- 2023/12/22 00:42 [pubmed]
PHST- 2023/12/21 19:23 [entrez]
AID - S0013-9351(23)02760-3 [pii]
AID - 10.1016/j.envres.2023.117956 [doi]
PST - ppublish
SO  - Environ Res. 2024 Mar 1;244:117956. doi: 10.1016/j.envres.2023.117956. Epub 2023 
      Dec 19.