Pengaruh pH dan Konsentrasi Elektrolit dalam Elektrokoagulasi Limbah Surfaktan

Abstract

Surfactants are the main components in detergents. Surfactants in detergents will form a layer that spreads on the surface of the water, which can reduce the surface tension of the water and will form an emulsion the foam formation that can repel dirt. Large amounts of surfactants in wastewater discharged into the environment can cause damage to aquatic life, water pollution and endanger human health. Therefor it is necessary to separate or change them into other harmless materials before being discharged into the environment. One of the methods used is electrocoagulation. The electrocoagulation method is an environmentally friendly method of treating liquid waste by combining the principles of coagulation, floatation and electrochemistry. In this study, the electrocoagulation method was carried out by varying pH and electrolyte concentrations in the simulated surfactant waste treatment. Surfactant levels were determined by extraction of ion pair surfactant-methylene blue with an organic solvent then measured using spectrophotometer. The optimization of the method is done by determining the maximum absorption length, optimum pH, and the effect of adding electrolytes with different concentrations. The results showed that the maximum absorption at a wavelength of 652 nm.