EFFECTIVENESS OF MORINGA OLEIFERA AS A NATURAL COAGULANT AND ADSORBENT IN LEACHATE TREATMENTERINA RAHMADYANTI, NINIK WAHJU HIDAJATI AND MAS SURYANTO HADI SAPUTRO
Leachate is wastewater from garbage heaps that has the potential to pollute the environment if it is not treated. The physical and chemical technologies that are often used are coagulation flocculation and adsorption. Both of these technologies use synthetic coagulants and adsorbents to reduce pollutants in leachate. The use of synthetic coagulants and adsorbents is harmful to the environment and human health. This study aims to determine the effectiveness of Moringa oleifera as a natural coagulant and adsorbent in the coagulation flocculation and adsorption in leachate treatment. The result shows that Moringa oleifera as a natural coagulant was able to remove COD, TSS, and heavy metal respectively by 62%, 94%, and 88% compared to alum, namely 64%, 88%, and 78%. The effectiveness increased with the combination of adsorption using fly ash which was able to remove COD, TSS, and heavy metal to 74.2%, 99.5%, and 99.6% respectively compared to 76.6%, 96.3%, and 97.4% alum. The addition of Moringa oleifera needs to be considered because it makes the environment tend to be alkaline even though it is still in the normal range of 6-8. Particularly for COD, although it has high efficiency but does not meet government regulatory standards, therefore it is recommended to combine it with biological treatment in future studies.