Fuente: PubMed "microbial biotechnology" Environ Res. 2025 Dec 13:123553. doi: 10.1016/j.envres.2025.123553. Online ahead of print.ABSTRACTOwing to the complex composition and toxicity of pesticide wastewater, conventional anaerobic membrane bioreactor (CAnMBR) operated at low temperatures faces increased energy demand and exacerbated membrane fouling. This study developed an innovative hybrid anaerobic membrane bioreactor (HAnMBR) that integrates a partitioned up-flow anaerobic sludge blanket, an external membrane module, and ferromagnetic biochar. Mass balances, membrane-fouling mitigation, energy footprint, and life cycle assessment (LCA) were investigated in both reactors under varying organic and hydraulic loading rates (OLR and HLR). Relative to the CAnMBR, the HAnMBR exhibited an 8.5% increase in the fraction converted to CH4 and a 17.1% decrease in the fraction converted to sludge, based on the mass balance. The carbon reduction rates were calculated to be -21.4% for CAnMBR and -52.8% for HAnMBR. The HAnMBR achieved a total energy yield of 6.18 kWh·m-3, 2.78 times that of the CAnMBR. Moreover, the concentrations of soluble microbial products (SMP) and extracellular polymeric substances (EPS) decreased by 2.9-33.9% and 30.7-40.6%, respectively. At a transmembrane pressure (TMP) endpoint of 80 kPa, the membrane cleaning interval of the HAnMBR was extended by 18.5-35.1%. Energy recovery was substantially enhanced, with the maximum average CH4 production reaching 3.0 L/d and dissolved CH4 content decreasing by 58.0%, combined with a 14.9% increase in the maximum CH4 component. Finally, the LCA corroborated that the HAnMBR provides a promising route toward sustainable wastewater treatment through lower carbon emissions coupled with greater energy recovery.PMID:41397504 | DOI:10.1016/j.envres.2025.123553