Original Research Published on 04 Feb 2019 Citric Acid Modified Bentonite for Congo Red Adsorption in Colloidal Materials and Interfaces Hanbing ZhangJuan ZhouYaseen MuhammadRui TangKun LiuYing ZhuZhangfa Tong Frontiers in Materials doi 10.3389/fmats.2019.00005 11,768 views 49 citations