Pengaruh Suhu dan pH Elektrokoagulasi Terhadap Penurunan Kadar TSS dan COD pada Limbah Cair Laundry
Abstract
The liquid waste of laundry is known to contain various contaminants. This study investigated the treatment of the liquid waste of laundry using electrocoagulation, with temperature and pH variation. The electrodes used were a pair of aluminum, to produce ion Al3+ reacting with ion OH– from the water, to form coagulant Al(OH)3. The temperature was varied at 30ºC, 50ºC, and 70ºC; while the pH was varied at 5 and 9. The quality of waste was measured from the level of total suspended solid (TSS) and chemical oxygen demand (COD). Within the range of studied parameters, the optimum conditions were obtained at temperature of 30-50oC and pH of 5, with the efficiency of decrease of TSS level and COD level of 39.71% and 58.35%, respectively.
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