Utilization of Indonesian coal fly ash as a silica precursor for mesoporous silica based slow-release fertilizer
This study explores the utilization of coal fly ash (FA) as a silica source for the synthesis of mesoporous silica (MS) for slow-release fertilizers (SRF). Initially, the FA was washed with concentrated hydrochloric acid to produce silica with 77.95% purity. The extracted silica was treated with sodium hydroxide at 80...