Pemanfaatan Limbah Cair Kopi Sebagai Elektrolit Pada Aki Gel (Accumulator)

Leabiez Zulkanzi, Mulya Arifin, Medyan Riza, Nasrullah Nasrullah

Abstract


Liquid wastes from washing coffee beans which has the potential and is very abundant, especially in Aceh. People generally deal with liquid wastes from washing coffee by making liquid wastes from washing coffee thrown away. Liquid wastes from washing coffee contains acids that have the potential to generate electric current. Because the battery water used is reactive, we propose this research by reducing it using liquid wastes from washing coffee. This study aims to study the potential of liquid wastes from washing coffee to reduce the use of sulfuric acid in gel batteries. Acidic coffee wastewater was investigated by testing liquid wastes from washing coffee gel to reduce sulfuric acid in the form of an electrolyte gel. Liquid wastes from washing coffee is prepared and then mixed with accu zuur and sulfuric acid to test samples with various concentrations. Samples with optimal values of voltage and current strength are then mixed with a gelling agent to obtain gel electrolyte. Within a period of 4 hours, there is a voltage on the accumulator which is filled with a liquid wastes from washing coffee electrolyte solution with an hourly value of 12; 12; 12; 12 and 11.5 volts. This liquid wastes from washing coffee electrolyte solution contains 50% liquid wastes from washing coffee and 50% accu zuur (30% sulfuric acid). The solution was formed into a gel by adding 10% CMC-Na with a density of 1.156 g / ml and a viscosity of 9.388 N / m 2 . The liquid wastes from washing coffee electrolyte solution was tested for the voltage and current strength using an analog multitester.

Keywords


Liquid wastes from washing coffee; gel electrolyte; accu zuur; ions

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