PMID- 30949946 OWN - NLM STAT- MEDLINE DCOM- 20190702 LR - 20200225 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 26 IP - 15 DP - 2019 May TI - Efficacy of biocementation of lead mine waste from the Kabwe Mine site evaluated using Pararhodobacter sp. PG - 15653-15664 LID - 10.1007/s11356-019-04984-8 [doi] AB - Biocementation of hazardous waste is used in reducing the mobility of contaminants, but studies on evaluating its efficacy have not been well documented. Therefore, to evaluate the efficacy of this method, physicochemical factors affecting stabilized hazardous products of in situ microbially induced calcium carbonate precipitation (MICP) were determined. The strength and leach resistance were investigated using the bacterium Pararhodobacter sp. Pb-contaminated kiln slag (KS) and leach plant residue (LPR) collected from Kabwe, Zambia, were investigated. Biocemented KS and KS/LPR had leachate Pb concentrations below the detection limit of < 0.001 mg/L, resisted slaking, and had maximum unconfined compressive strengths of 8 MPa for KS and 4 MPa for KS/LPR. Furthermore, biocemented KS and KS/LPR exhibited lower water absorption coefficient values, which could potentially reduce the water transportation of Pb(2+). The results of this study show that MICP can reduce Pb(2+) mobility in mine wastes. The improved physicochemical properties of the biocemented materials, therefore, indicates that this technique is an effective tool in stabilizing hazardous mine wastes and, consequently, preventing water and soil contamination. FAU - Mwandira, Wilson AU - Mwandira W AD - Graduate School of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-Ku, Sapporo, 060-8628, Japan. FAU - Nakashima, Kazunori AU - Nakashima K AD - Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-Ku, Sapporo, 060-8628, Japan. nakashima@geo-er.eng.hokudai.ac.jp. FAU - Kawasaki, Satoru AU - Kawasaki S AD - Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-Ku, Sapporo, 060-8628, Japan. FAU - Ito, Mayumi AU - Ito M AD - Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-Ku, Sapporo, 060-8628, Japan. FAU - Sato, Tsutomu AU - Sato T AD - Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-Ku, Sapporo, 060-8628, Japan. FAU - Igarashi, Toshifumi AU - Igarashi T AD - Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-Ku, Sapporo, 060-8628, Japan. FAU - Banda, Kawawa AU - Banda K AD - IWRM Centre/Geology Department, School of Mines, University of Zambia, P.O. Box 32379, Lusaka, Zambia. FAU - Chirwa, Meki AU - Chirwa M AD - IWRM Centre/Geology Department, School of Mines, University of Zambia, P.O. Box 32379, Lusaka, Zambia. FAU - Nyambe, Imasiku AU - Nyambe I AD - IWRM Centre/Geology Department, School of Mines, University of Zambia, P.O. Box 32379, Lusaka, Zambia. FAU - Nakayama, Shouta AU - Nakayama S AD - Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo, 060-0818, Japan. FAU - Ishizuka, Mayumi AU - Ishizuka M AD - Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo, 060-0818, Japan. LA - eng GR - Not applicable/Japan International Cooperation Agency (JICA)/Japan Science and Technology Agency (JST), Science and Technology Research Partnership for Sustainable Development (SATREPS)/ GR - JP18H03395/Japan Society for the Promotion of Science (JSPS) KAKENHI/ GR - JP16H04404/Japan Society for the Promotion of Science (JSPS) KAKENHI/ PT - Journal Article DEP - 20190404 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Hazardous Waste) RN - 0 (Soil Pollutants) RN - 2P299V784P (Lead) SB - IM MH - Hazardous Waste MH - Lead/chemistry/*toxicity MH - Soil Pollutants/*analysis/chemistry OTO - NOTNLM OT - Abandoned mine OT - Efficacy OT - Leaching OT - Solidification OT - Strength EDAT- 2019/04/06 06:00 MHDA- 2019/07/03 06:00 CRDT- 2019/04/06 06:00 PHST- 2018/12/04 00:00 [received] PHST- 2019/03/25 00:00 [accepted] PHST- 2019/04/06 06:00 [pubmed] PHST- 2019/07/03 06:00 [medline] PHST- 2019/04/06 06:00 [entrez] AID - 10.1007/s11356-019-04984-8 [pii] AID - 10.1007/s11356-019-04984-8 [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2019 May;26(15):15653-15664. doi: 10.1007/s11356-019-04984-8. Epub 2019 Apr 4.