Purification of Crude Palm Oil (CPO) Using Cocoa Fruit Skins and Rice Straw Waste as Bioadsorbents Journal title: International Journal of Multidisciplinary Research and Analysis Authors: Nurdjannah Nurdjannah, La Ifa, Fitra Jaya, Junainah Junainah, Kartika Eka Setyawati, Irma Nur Afiah Subject(s): Biological Sciences, Economics, Education, Engineering, Mathematics, Social Sciences, Technological Change, Health science