PMID- 31709483 OWN - NLM STAT- MEDLINE DCOM- 20200218 LR - 20200309 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 26 IP - 35 DP - 2019 Dec TI - Suppression of coal dust by microbially induced carbonate precipitation usingStaphylococcus succinus. PG - 35968-35977 LID - 10.1007/s11356-019-06488-x [doi] AB - Coal dust from open-cast mines is a significant air pollutant; thus, dust particles and toxins contained in the dust are a severe threat to human health and ecosystems. Microbially induced carbonate precipitation (MICP) is a low-cost and environmentally friendly way to suppress coal dust. With high urease activity and tolerance to coal dust, a bacterial strain, Staphylococcus succinus J3, was isolated from soil in a mine area. Thus, in dust suppression experiments, we used coal dust dominated by fine granule particles (100-250 mum) from an open-cast mine. Consequently, four factors were identified: initial bacterial biomass, calcium concentration, urea concentration, and spraying frequency; we investigated their effects on MICP as a dust suppression technique using one-factor-at-a-time experiments. Maximum threshold broken wind speed (45.5 m s(-1)) and pressure (912 kPa) were obtained under the following condition: OD(600) = 0.7, 40 mmol calcium, 6% (w/w) urea in the bonding solution which was sprayed five times in 35 days. Pearson correlation analysis described that urea concentration and spraying frequency both significantly positive correlations with the threshold broken wind speed and pressure via Pearson analysis. When the coal dust suppression process was complete, scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy showed that a solidified layer of calcareous precipitate had formed on the surface of the dust. These results indicate that Staphylococcus succinus J3 has considerable potential for use in MICP as a coal dust suppression technique. FAU - Song, Wenjuan AU - Song W AD - State Key Laboratory of Desert & Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China. songwj@ms.xjb.ac.cn. AD - University of Chinese Academy of Science, Beijing, 100049, China. songwj@ms.xjb.ac.cn. FAU - Yang, Yuyi AU - Yang Y AD - University of Chinese Academy of Science, Beijing, 100049, China. AD - Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China. FAU - Qi, Ran AU - Qi R AD - Chinese People's Armed Police Golden Eighth Detachment, Urumqi, 830026, China. FAU - Li, Junpeng AU - Li J AD - School of Life Science, Shihezi University, Shihezi, 832002, China. FAU - Pan, Xiangliang AU - Pan X AD - State Key Laboratory of Desert & Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China. panxl@zjut.edu.cn. AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China. panxl@zjut.edu.cn. LA - eng GR - 2016B03042-2/Department of Education, Xinjiang Uygur Autonomous Region (CN)/ GR - 2017478/Youth Innovation Promotion Association of the Chinese Academy of Sciences/ PT - Journal Article DEP - 20191110 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Carbonates) RN - 0 (Coal) RN - 0 (Dust) RN - 0 (Minerals) RN - 8W8T17847W (Urea) RN - EC 3.5.1.5 (Urease) SB - IM MH - Air Pollution MH - *Biodegradation, Environmental MH - Biomass MH - Carbonates/*metabolism MH - *Coal MH - Coal Mining MH - *Dust MH - Ecosystem MH - Microscopy, Electron, Scanning MH - Minerals MH - Mining MH - Spectrometry, X-Ray Emission MH - Staphylococcus/*metabolism MH - Urea MH - Urease OTO - NOTNLM OT - Microbially induced carbonate precipitation (MICP) OT - Staphylococcus succinus OT - Suppression OT - Threshold broken pressure OT - Threshold broken wind speed OT - coal dust EDAT- 2019/11/12 06:00 MHDA- 2020/02/19 06:00 CRDT- 2019/11/12 06:00 PHST- 2019/02/27 00:00 [received] PHST- 2019/09/09 00:00 [accepted] PHST- 2019/11/12 06:00 [pubmed] PHST- 2020/02/19 06:00 [medline] PHST- 2019/11/12 06:00 [entrez] AID - 10.1007/s11356-019-06488-x [pii] AID - 10.1007/s11356-019-06488-x [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2019 Dec;26(35):35968-35977. doi: 10.1007/s11356-019-06488-x. Epub 2019 Nov 10.