Removal of COD and Ammoniacal Nitrogen in Leachate Using Rice Husk Ash as Adsorbent
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Department of Civil Engineering, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram Dist., Tamil Nadu, India
Publish date: 2019-03-16
Eurasian J Anal Chem 2019;14(1):emEJAC191013
Leachate generation inside Solid Waste Landfills and Dumpsite is regarded as a major threat to the environment that has to be managed utilizing proper disposal systems and waste management techniques. In this study, the leachate characteristics such as pH, Turbidity¸ EC, TDS, TSS, DO, BOD, COD and Ammoniacal Nitrogen were identified and the leachate was treated with rice husk ash to reduce the concentration of COD and Ammoniacal Nitrogen. The conditions such as contact time, adsorbent dosage and pH were varied to identify the maximum reduction in concentration. It was observed that the removal of COD and Ammoniacal Nitrogen was between 15.9 - 26.7% and 9.5 - 26.7% when varying adsorbent dosage. The reduction efficiency of COD and Ammoniacal Nitrogen was between 15.3 - 36.1 % and 20.2 - 30.8 % while varying the contact time. When the pH was adjusted the COD and Ammoniacal Nitrogen removal efficiency was 29.7 - 47.5% and 18.6 - 47.1 %. Hence, it is found that rice husk ash can be utilized as a low cost adsorbent which is said to be a feasible technique in treating the leachate.