Sustainable photocatalytic water remediation via dual active strongly coupled AgBiO3 on PVDF/PBSA membranes

•Strongly coupled AgBiO3 based recyclable and reusable composite membranes with no significant leaching of Ag ions.•Enhanced water flux and protein fouling resistance with FRR 87 ± 5% and BSA as model foulant.•Complete E. coli remediation in the presence of light as well as dark conditions.•Effective bactericidal action against secondary wastewater verified by live/dead assay.•More than 83% degradation of recalcitrant Methylene Blue and 4-Nitrophenol.