Sukma, Ratih Mutiara2022-03-152022-03-152021-09wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/10473The high level of organic contaminants in Palm Oil Mill Effluent (POME) was reflected in its higher values of Chemical Oxygen Demand (COD), thus requiring a proper treatment before they could be released into an environment. The Fenton-based Advanced Oxidation Process (AOP) is considered to be the most effective and environmentally friendly method available and could be applied to overcome this issue. The method is based on the production of •OH via activation of H2O2 by a catalyst. The radical degrades most organic contaminants into CO2 and H2O if complete oxidation occurs. In this study, the cryptomelane-type manganese oxide was first synthesized via sol-gel method and was dipersed at different concentrations (5%, 10% and 15% by mass) on a commercial bentonite clay to generate α-MnO2/bentonite composite. The XRD results confirmed the presence of cryptomelane phase in the composite. The catalytic studies indicated that under optimum condition, 42,33% COD removal was achieved using 15% α-MnO2/bentonite after 60 minutes of degradation time.enFenton methodMnO2-bentonitePOMEArticle