This study investigated the effects of alginate-powdered activated carbon-quorum quenching (APQ) beads on microbial communities in MBRs treating real semiconductor wastewater. The addition of APQ beads significantly reduced membrane biofouling and extended membrane lifespan. The APQ-MBR maintained stable treatment performance with approximately 99% COD removal while reducing extracellular polymeric substances (EPS) and alleviating membrane biofouling. Taxonomic analysis revealed that QQ had limited influence on overall microbial diversity but affected the abundance of several bacterial genera in both mixed liquor and biofilm, including a reduction in the biofouling-associated genus Ferruginibacter and an enrichment of Bradyrhizobium. Correlation analysis further revealed associations between specific bacterial genera, N-butanoyl-l-homoserine lactone (C4-HSL), and EPS components. These results suggest that QQ-mitigated membrane biofouling mitigation is associated with changes in selected microbial populations involved in biofilm formation rather than broad alteration of the overall microbial community.
Membrane bioreactors (MBRs) are widely applied for advanced wastewater treatment, but membrane fouling remains a major constraint on long-term operational stability and economic viability. Biocarrier-assisted MBRs (BC-MBRs) have emerged as a promising strategy to simultaneously improve pollutant removal and mitigate fo...
Nhu-Nguyet Phan, Phuong Thi Mai Nguyen, L. H. Ngo et al.· Water environment research· 0 citations
Based on the distribution of aspartame in anaerobic digestion effluent (ADE) from food waste, this study explored the potential application of microalgae-bacterial granular sludge (MBGS) for treating ADE containing aspartame. While previous studies have focused on toxicity, the core scientific question of this work is...
Jia-Lu Liu, Meixing Xiao, Zhong-Yi Ji et al.· Bioresource Technology· 1 citation
Under low-DO operation, the SBR supplemented with P-gel effectively suppressed sludge bulking, prevented biomass loss, and sustained stable nutrients removal by regulating physicochemical properties of activated sludge.
Peng Zhang, Yi Fu, Hong-Xin Shi et al.· Bioresource Technology· 0 citations
An EPS-mediated microalgal-bacterial interaction model in which LB-EPS enriches DMP at the aggregate interface, TB-EPS stabilizes oxic-anoxic microzones, and microalgal-derived oxygen and carbon sources, signaling, chemotaxis, biofilm formation, and vitamin-associated functions collectively support bacterial DMP catabo...
Shi-Rui Liu, Yu-Ji-Qi-Xue-Xi-Gou-Jian-Wei-Sheng-Wu-Zhi-Shu-De-S Ji, Xia Hu et al.· Journal of Hazardous Materia...· 0 citations
Microalgae-based bioremediation of wastewater enables simultaneous nutrient removal and production of value-added biomass. This study systematically evaluated three geographically distinct Chlorella sp. strains for semi-continuous treatment of food wastewater, addressing critical challenges that hinder practical applic...
Lin Zhao, Shu-Jie Wei, Yi-Fan Zhang et al.· Environmental Research· 0 citations
Although wastewater treatment plants (WWTPs) achieve high microplastic removal efficiency, substantial quantities are still discharged, and the long-term dynamics of plastisphere microorganisms on their surfaces and potential impacts on receiving waters remain poorly understood. Here, we conducted a 7-15-30-60-day in...
Xin Hou, Rui-Jia Jing, Xiao-Ran Li et al.· npj Biofilms and Microbiomes· 0 citations
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