Synthesis of silica of rice husk modification (3-aminopropyl) trietoxysilane for adsorption methylene blueYusmaniar Yusmaniar, Darsef Darwis, Afrizal Afrizal and Annisa AnnisaMATEC Web Conf., 197 (2018) 09009DOI: https://doi.org/10.1051/matecconf/201819709009