Efficient degradation of sulfamonomethoxine in wastewater using a novel intimately coupled photocatalysis and biodegradation system prepared with the calcium alginate hydrogel

IF 3.7 3区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biochemical Engineering Journal Pub Date : 2025-03-27 DOI:10.1016/j.bej.2025.109731

Lai Peng , Qianyu Long , Chuanzhou Liang , Linchuan Fang , Yifeng Xu

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引用次数: 0

Abstract

The insecure fixation of photocatalysts and their susceptibility to being covered by microorganisms existed in the traditional intimately coupled photocatalysis and biodegradation (ICPB) system. In this work, an ICPB system was developed by coupling g-C₃N₄ and biofilm carriers through introducing calcium alginate (CA) hydrogel. The ICPB-CA system showed superior removal efficiencies of sulfamonomethoxine (SMM) (99.3 %) compared to corresponding photocatalysis and biodegradation systems. Relatively higher stability was also achieved with SMM removal efficiencies higher than 92.5 % after three consecutive cycles, as CA hydrogel markedly improved the adhesion strength between the photocatalysts and biofilm carriers. Furthermore, SMM degradation pathways in the ICPB-CA system were proposed, with smaller-molecular products produced. Biotoxicity evaluation tests also indicated that the degradation products were less toxic than the parent SMM, suggesting that ICPB-CA system could significantly mitigate the antimicrobial activities of SMM. This study will provide a promising alternative to construct the ICPB system, realizing higher removal efficiency of antibiotics while decreasing their toxicity.

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来源期刊

Biochemical Engineering Journal 工程技术-工程：化工

CiteScore

7.10

自引率

5.10%

发文量

380

审稿时长

34 days

期刊介绍： The Biochemical Engineering Journal aims to promote progress in the crucial chemical engineering aspects of the development of biological processes associated with everything from raw materials preparation to product recovery relevant to industries as diverse as medical/healthcare, industrial biotechnology, and environmental biotechnology. The Journal welcomes full length original research papers, short communications, and review papers* in the following research fields: Biocatalysis (enzyme or microbial) and biotransformations, including immobilized biocatalyst preparation and kinetics Biosensors and Biodevices including biofabrication and novel fuel cell development Bioseparations including scale-up and protein refolding/renaturation Environmental Bioengineering including bioconversion, bioremediation, and microbial fuel cells Bioreactor Systems including characterization, optimization and scale-up Bioresources and Biorefinery Engineering including biomass conversion, biofuels, bioenergy, and optimization Industrial Biotechnology including specialty chemicals, platform chemicals and neutraceuticals Biomaterials and Tissue Engineering including bioartificial organs, cell encapsulation, and controlled release Cell Culture Engineering (plant, animal or insect cells) including viral vectors, monoclonal antibodies, recombinant proteins, vaccines, and secondary metabolites Cell Therapies and Stem Cells including pluripotent, mesenchymal and hematopoietic stem cells; immunotherapies; tissue-specific differentiation; and cryopreservation Metabolic Engineering, Systems and Synthetic Biology including OMICS, bioinformatics, in silico biology, and metabolic flux analysis Protein Engineering including enzyme engineering and directed evolution.