Fig. 2From: Bisacodyl removal from contaminated solution by synthesized mesoporous silica using experimental design methodEffect of contact time on the bisacodyl adsorption process, the conditions were pH of 7, initial concentration of 5 mg/l and adsorbate mass of 0.5 mg in 100 ml. The experiments were performed in triplicate, and the mean and error bar are presented on itBack to article page