Penurunan COD (Chemical Oxygen Demand) dalam Limbah Cair Laboratorium Menggunakan Filter Karbon Aktif Arang Tempurung Kelapa
This research use activated carbon from coconut shell as a media to removal of COD in laboratory wastewater. The research is done at UII laboratory with use batch and continuous reactor. At the batch reactor use variation of pH : 7, 8, 9,10 and initial concentration of COD 85,8 mg/L, 81,3 mg/L, 61,2 mg/L, 53,8 mg/L. Doses of activated carbon is 1, 2, 3, 4 grams each 200 ml of wastewater. Rapid mixing at the batch reactor is 150 rpm as long as 2 hours. For continuous reactor is make with series, that is two reactor column. In this system is used wastewater with initial concentration of COD 97,68 mg/L and pH 8. The sampling is taken each one hours after reactor have operation. The result of sample test show that activated carbon from coconut shell be able to removal of COD in the laboratory wastewater. The biggest efficiency of removal is 68 % at the activated carbon doses 4 mg and pH 8. Models of sorption with isotherm Freundlich is gotten equation x/m = 0,0009*C0,3281. On the continuous reactor, the biggest efficiency of removal are 61,99 % at the first column and 75 % at the second column. Based on the result of this research, so that activated carbon form coconut shell possible to applied as a alternative treatment to laboratory wastewater, specially wastewater on the UII laboratory.
keyword : Activated carbon, Laboratory wastewater, Removal of COD
PPST DPPM Universitas Islam Indonesia