Biochar/Clay Composite Particle Immobilized Compound Bacteria: Preparation, Collaborative Degradation Performance and Environmental Tolerance

Immobilized microbial materials can effectively remove pollutants from surface water, and a biochar/clay composite particle (BCCP) material is prepared with immobilized Flavobacterium mizutaii sp. and Aquamicrobium sp. to remove ammonia nitrogen (NH4+–N) and petroleum hydrocarbons (PHCs). The result...

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Published inWater (Basel) Vol. 15; no. 16; p. 2959
Main Authors Sun, Pengfei, Wei, Jun, Gao, Yaoyao, Zhu, Zuhao, Huang, Xiao
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2023
Subjects
Adsorption
Bacteria
biochar
Cloning
Composite materials
composite particle
compound bacteria
Efficiency
environmental tolerance
Experiments
immobilization
Kinetics
Microorganisms
Pollutants
Polyvinyl alcohol
Salinity
Temperature
Wetlands
China
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Summary:Immobilized microbial materials can effectively remove pollutants from surface water, and a biochar/clay composite particle (BCCP) material is prepared with immobilized Flavobacterium mizutaii sp. and Aquamicrobium sp. to remove ammonia nitrogen (NH4+–N) and petroleum hydrocarbons (PHCs). The results indicated that the optimal ratios of biochar, Na2SiO3 and NaHCO3 were 15%, 3%, and 3%, and the adsorption process was found to be better described with the pseudo-second-order kinetic equation. The individual immobilization of Flavobacterium mizutaii sp. and Aquamicrobium sp. with sodium alginate–polyvinyl alcohol (PVA + SA) achieved 80% and 90% removal efficiencies for NH4+–N and PHCs at the 10th d. The composite immobilization of two efficient bacteria could degrade 82.48% NH4+–N and 74.62% PHCs. In addition, immobilization relieved the effects of temperature and salinity. This study can provide guidance for the application of immobilized microbial composite materials in natural water environments.
ISSN:2073-4441
2073-4441
DOI:10.3390/w15162959