Optimization of dissolved oxygen in the removal of wastewater generated in a sawmill using response surface methodology (RSM)

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Abstract

This study aims to optimize dissolved oxygen levels in treating wastewater generated during the sawmill drying process, using response surface methodology (RSM). The experimental approach, employing three independent variables centrifuge time, centrifuge RPM, and microwave power, evaluates their impact on the effectiveness of wastewater treatment based on dissolved oxygen levels. Parameter ranges are set at 5-20 minutes for centrifuge time, 15-35 for centrifuge RPM, and 100-250 Watts for microwave power. Optimization results reveal the highest dissolved oxygen value with a centrifuge time of 20.00 minutes, centrifuge RPM of 35.00, and microwave power of 100.00 Watts, yielding a maximum value of 9.85 mg/L. ANOVA analysis of the obtained data confirms the compatibility of the proposed model with experimental results (p

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