Synergistic adsorption of berberine onto ball-milled biochar-montmorillonite composites derived from traditional Chinese medicine residue: performance, mechanism, and regeneration

Yan Liu
The accumulation of root-exuded berberine (BER) in soil is a key contributor to continuous cropping obstacles, threatening sustainable agriculture. In this study, a novel biochar–montmorillonite composite was synthesized via co-ball milling using traditional Chinese medicine residue derived biochar and montmorillonite (Mt) for berberine removal. The composite exhibited superior adsorption performance with a maximum capacity of 231.60 mg·g-1. Characterization by Brunauer–Emmett–Teller (BET) surfa