Enzymatic degrading chlorophenol wastewater by mixed strains of immobilized white rot fungi

文献类型： 外文期刊

第一作者： Liu, Hongyuan

作者： Liu, Hongyuan;Lou, Xueyi;Shao, Yeyao;Wang, Zhichao;Xiao, Jiamin;Cen, Kai;Chen, Dingyin;Xia, Qiman;Fang, Fang;Liu, Peng;Xu, Wenlong;Orooji, Yasin

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关键词： 4-DCP; White rot fungus; Immobilization technology; Mixed strains; Response surface optimization

期刊名称：PROCESS SAFETY AND ENVIRONMENTAL PROTECTION （ 影响因子：7.8； 五年影响因子：7.7 ）

ISSN： 0957-5820

年卷期： 2025 年 195 卷

页码：

收录情况： SCI

摘要： To address chlorophenol wastewater pollution, immobilized mixed white rot fungi (WRF) strain microsphere was designed as a solid degradation agent. This agent uses lignin peroxidase (LiP), manganese peroxidase (MnP), and laccase (Lac) to degrade the wastewater. Considering the diverse physical and chemical properties of the fungal microsphere, the immobilization agent formula is optimized, and comprehensive environmental factor design response surface analysis are implemented to determine the optimal delivery conditions. Consequently, the 2,4dichlorophenol (2,4-DCP) treatment rate and extracellular enzyme activity for a 1:1 encapsulation of T. versicolor and P. sajor-caju significantly outperform those of individual strains. The degradation efficiency reached 85.81 %, with Lac activity reaching 31.2 U/mL and LiP activity reaching 29.8 U/mL. Using polyvinyl alcohol (PVA), sodium alginate (SA), and biochar as carriers, and sodium dihydrogen phosphate solution as crosslinker, with SiO2/zeolite as additives, the immobilized mixed fungi yielded a high-quality solid agent. This achieved a 99.33 % 2,4-DCP degradation rate over 96 h, with optimal dosage, pH, and initial 2,4-DCP concentration at 11.5 g/L, 5.5, and 40 mg/L, respectively. The degradation of 2,4-DCP by WRF selectively removes adjacent chlorine atoms to produce 4-CP, enhancing the dechlorination efficiency.

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