Efficiency of Palm Oil Mill Fly Ash for Residential Building Wastewater Treatment
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Abstract
This research investigated the efficiency of palm oil mill fly ash for residential building wastewater treatment. The objective was to study the effects of pH value, contact time and optimum dosage of palm oil mill fly ash, including removal efficiency. The experiments were carried out in the batch test. Results showed that the optimum pH value was 6 with COD removal efficiency of 60.00±8.94%. The optimum contact time was 60 minutes with COD removal efficiency of 62.96±9.07%. The influence of palm oil mill fly ash dosage on adsorption efficiency was 2 g of palm oil mill fly ash per 100 mL of wastewater, allowing the highest COD removal efficiency of 84.62±9.73%. The turbidity was varied according to palm oil mill fly ash dosage. The study of adsorption isotherm revealed that COD adsorption with palm oil mill fly ash corresponded to Langmuir isotherm.
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