Susanto, A., Abdullah, Muthia Elma and Meilana Dharma Putra 2022. Characteristics of Heterogeneous Catalysts Fly Ash Fraction of Light Shell and Fiber of Palm Oil Mill Solid Waste Grown on Peatlands. Journal of Advanced Research in Applied Sciences and Engineering Technology. 28, 3 (Nov. 2022), 85–104. DOI:https://doi.org/10.37934/araset.28.3.85104.