bentonite process in surabaya indonesia grinder attrition mill
organic molecules on bentonite surface, classified as a physical process and (2) organofunctionalization or grafting of organic Applied Clay Science 48 (2010) 81–86 ⁎ Corresponding author Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya 60114, Indonesia Tel: +62 31