Academic Journal
Microbiologically induced calcite precipitation for in situ stabilization of heavy metals contributes to land application of sewage sludge.
| Τίτλος: | Microbiologically induced calcite precipitation for in situ stabilization of heavy metals contributes to land application of sewage sludge. |
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| Συγγραφείς: | Zeng Y; State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China. Electronic address: zy_duty@163.com., Chen Z; State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China. Electronic address: chenzzg@nju.edu.cn., Lyu Q; 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., Cheng Y; 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., Huan C; 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., Jiang X; 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., Yan Z; 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., Tan Z; 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. |
| Πηγή: | Journal of hazardous materials [J Hazard Mater] 2023 Jan 05; Vol. 441, pp. 129866. Date of Electronic Publication: 2022 Aug 30. |
| Τύπος έκδοσης: | Journal Article; Research Support, Non-U.S. Gov't |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 9422688 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3336 (Electronic) Linking ISSN: 03043894 NLM ISO Abbreviation: J Hazard Mater Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Amsterdam : Elsevier |
| Ιατρικοί όροι (MeSH): | Metals, Heavy*/chemistry , Sporosarcina*/metabolism, Cadmium/metabolism ; Calcium Carbonate/metabolism ; Lead/metabolism ; Sewage/chemistry ; Urease/metabolism |
| Περίληψη: | 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. (Copyright © 2022 Elsevier B.V. All rights reserved.) |
| Competing Interests: | 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. |
| Contributed Indexing: | Keywords: Biomineralization; Municipal sludge; Sporosarcina; Toxic metal; Urease |
| Substance Nomenclature: | 0 (Metals, Heavy) 0 (Sewage) 00BH33GNGH (Cadmium) 2P299V784P (Lead) EC 3.5.1.5 (Urease) H0G9379FGK (Calcium Carbonate) |
| Entry Date(s): | Date Created: 20220905 Date Completed: 20221005 Latest Revision: 20221006 |
| Update Code: | 20260130 |
| DOI: | 10.1016/j.jhazmat.2022.129866 |
| PMID: | 36063711 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1873-3336 |
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| DOI: | 10.1016/j.jhazmat.2022.129866 |