Academic Journal
Succession of microbial communities and modulation of functional genes contribute to immobilization of typical heavy metals during livestock manure composting enhanced by the amendment of exogenous passivators.
| Τίτλος: | Succession of microbial communities and modulation of functional genes contribute to immobilization of typical heavy metals during livestock manure composting enhanced by the amendment of exogenous passivators. |
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| Συγγραφείς: | Liu H; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying, 257347, China. Electronic address: liuht@igsnrr.ac.cn., Liu S; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China., Huang L; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China., Zhang J; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, 541004, China. Electronic address: zjun@glut.edu.cn., Wang L; Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China., Huang C; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China., Wang D; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, 541004, China. |
| Πηγή: | Journal of hazardous materials [J Hazard Mater] 2026 Sep 01; Vol. 515, pp. 142857. Date of Electronic Publication: 2026 Jul 02. |
| Τύπος έκδοσης: | Journal Article |
| 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 , Metals, Heavy*/metabolism , Manure*/analysis , Manure*/microbiology , Microbiota*/genetics , Microbiota*/drug effects , Composting*, Durapatite/chemistry ; Bacteria/genetics ; Animals ; Astacoidea ; Genes, Bacterial |
| Περίληψη: | Composting effectively reduces the bioavailability of heavy metals (HMs) in livestock manure. However, the mechanisms by which physical, chemical, and biological passivators modulate microbial communities and HM-related functional genes to enhance HM immobilization remain unclear. This study investigated the effects of individual and combined additions of medical stone (physical agent), hydroxyapatite (chemical agent), and crayfish shell (biological agent) on modulating microbial community structure and functional gene abundance while deciphering their coupled associations with the bioavailability of HMs (Cu, Zn, Cr, As, Ni). The results demonstrated that medical stone exhibited the highest immobilization rate for As (84.80%), followed by Cu, which was mainly attributed to enhanced lacz1 abundance, increased microbial diversity, adsorption, and humification. Hydroxyapatite was most effective in immobilizing Cu and Zn, with immobilization rates of 82.02% and 81.05%, respectively, driven by enrichment of Actinobacteriota, particularly Saccharomonospora and Flavobacterium, as well as increased mt and lacz1 abundances, humification, and phosphate precipitation. Crayfish shell primarily immobilized Cu and Zn, with immobilization rates of 80.90% and 40.11%, respectively, by promoting microbial growth and diversity. Combined passivators primarily immobilized Cu and Zn, with hydroxyapatite and crayfish shell combination being most effective (immobilization rates of 80.03% and 64.98%, respectively); this was achieved by increasing the abundance of Cellvibrio (14-fold increase), Saccharomonospora, and the mt gene. These findings elucidate the mechanisms through which exogenous passivators mitigate the potential environmental risks of Cu, Zn, and As in livestock manure by modulating specific microbial communities and HM-related functional genes. (Copyright © 2026 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: Composting; Functional gene; Heavy metal immobilization; Livestock manure; Microbial community |
| Substance Nomenclature: | 0 (Metals, Heavy) 0 (Manure) 91D9GV0Z28 (Durapatite) |
| Entry Date(s): | Date Created: 20260806 Date Completed: 20260820 Latest Revision: 20260820 |
| Update Code: | 20260820 |
| DOI: | 10.1016/j.jhazmat.2026.142857 |
| PMID: | 42561678 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1873-3336 |
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| DOI: | 10.1016/j.jhazmat.2026.142857 |