PMID- 36063711 OWN - NLM STAT- MEDLINE DCOM- 20221005 LR - 20221006 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 441 DP - 2023 Jan 5 TI - Microbiologically induced calcite precipitation for in situ stabilization of heavy metals contributes to land application of sewage sludge. PG - 129866 LID - S0304-3894(22)01659-4 [pii] LID - 10.1016/j.jhazmat.2022.129866 [doi] AB - Microbiologically induced calcite precipitation (MICP) has shed new light on solving the problem of in situ stabilization of heavy metals (HMs) in sewage sludge before land disposal. In this study, we examined whether MICP treatment can be integrated into a sewage sludge anaerobic digestion-land application process. Our results showed that MICP treatment not only prevented the transfer of ionic-state Cd from the sludge to the supernatant (98.46 % immobilization efficiency) but also reduced the soluble exchangeable Pb and Cd fractions by up to 100 % and 48.54 % and increased the residual fractions by 22.54 % and 81.77 %, respectively. In addition, the analysis of the stability of HMs in MICP-treated sludge revealed maximum reductions of 100 % and 89.56 % for TCLP-extractable Pb and Cd, respectively. Three-dimensional fluorescence, scanning electron microscopy-energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy analyses confirmed the excellent performance of the ureolytic bacteria Sporosarcina ureilytica ML-2 in the sludge system. High-throughput sequencing showed that the relative abundance of Sporosarcina sp. reached 53.18 % in MICP-treated sludge, and the urease metabolism functional genes unit increased by a maximum of 239.3 %. The MICP technology may be a feasible method for permanently stabilizing HMs in sewage sludge before land disposal. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Zeng, Yong AU - Zeng Y AD - State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China. Electronic address: zy_duty@163.com. FAU - Chen, Zezhi AU - Chen Z AD - State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China. Electronic address: chenzzg@nju.edu.cn. FAU - Lyu, Qingyang AU - Lyu Q AD - CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China. FAU - Cheng, Yapeng AU - Cheng Y AD - CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China. FAU - Huan, Chenchen AU - Huan C AD - CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China. FAU - Jiang, Xinru AU - Jiang X AD - CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China. FAU - Yan, Zhiying AU - Yan Z AD - CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China. Electronic address: yanzy@cib.ac.cn. FAU - Tan, Zhouliang AU - Tan Z AD - CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220830 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Metals, Heavy) RN - 0 (Sewage) RN - 00BH33GNGH (Cadmium) RN - 2P299V784P (Lead) RN - EC 3.5.1.5 (Urease) RN - H0G9379FGK (Calcium Carbonate) SB - IM MH - Cadmium/metabolism MH - Calcium Carbonate/metabolism MH - Lead/metabolism MH - *Metals, Heavy/chemistry MH - Sewage/chemistry MH - *Sporosarcina/metabolism MH - Urease/metabolism OTO - NOTNLM OT - Biomineralization OT - Municipal sludge OT - Sporosarcina OT - Toxic metal OT - Urease 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- 2022/09/06 06:00 MHDA- 2022/10/06 06:00 CRDT- 2022/09/05 18:23 PHST- 2022/06/17 00:00 [received] PHST- 2022/08/25 00:00 [revised] PHST- 2022/08/26 00:00 [accepted] PHST- 2022/09/06 06:00 [pubmed] PHST- 2022/10/06 06:00 [medline] PHST- 2022/09/05 18:23 [entrez] AID - S0304-3894(22)01659-4 [pii] AID - 10.1016/j.jhazmat.2022.129866 [doi] PST - ppublish SO - J Hazard Mater. 2023 Jan 5;441:129866. doi: 10.1016/j.jhazmat.2022.129866. Epub 2022 Aug 30.