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Synergistic Remediation of Phenanthrene–cadmium Co-contaminants by an Immobilized Acclimated Bacterial–fungal Consortium and Its Community Response by Wei Li; Yanfeng Zhu; Kang Li; Liping Wang; Dan Li; Na Liu; Shaomeng Huang is a Environmental Science article available to read on EtoBox.

What is Synergistic Remediation of Phenanthrene–cadmium Co-contaminants by an Immobilized Acclimated Bacterial–fungal Consortium and Its Community Response about?

Bioremediation has tremendous potential to mitigate the serious threats posed by polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs). In the present study, nine bacterial–fungal consortia were progressively acclimated under different culture conditions. Among them, a microbial consortium 1, originating from activated sludge and copper mine sludge microorganisms, was developed through the acclimation of a multi-substrate intermediate (catechol)-target contaminant (Cd2+, phenanthrene (PHE)). Consortium 1 exhibited the best PHE degradation, with an efficiency of 95.6% after 7 d of inoculation, and its tolerance concentration for Cd2+ was up to 1800 mg/L within 48 h. Bacteria Pandoraea and Burkholderia–Caballeronia–Paraburkholderia, as well as fungi Ascomycota and Basidiomycota predominated in the consortium 1. Furthermore, a biochar-loaded consortium was constructed to better cope with the co-contamination behavior, which exhibited excellent adaptation to Cd2+ ranging of 50–200 mg/L. Immobilized consortium efficiently degraded 92.02–97.77% of 50 mg/L PHE within 7 d while removing 93.67–99.04% of Cd2+. In remediation of co-pollution, immobilization technology improved the bi

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Author

Wei Li; Yanfeng Zhu; Kang Li; Liping Wang; Dan Li; Na Liu; Shaomeng Huang

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)