Rotten Sweet Potato (Ipomoea Batatas L.) As An Alternative Source Of Electrical Energy

M. Dzul Azmi A A, An Nisa Nur Laila, Ayudika Permatasari, Yudistira Nurrizky Grahitaning Putra Roh


This research was aimed to find an alternative source of electrical energy from natural materials that are renewable and environmentally friendly. One of them that is potentially to be used as the source of energy is rotten sweet potato. Sweet potatoes (Ipomoea batatas L.) grow in mountainous areas and highlands and are usually used as a carbohydrate replacement of rice by some people. This research was conducted to prove whether sweet potato can be used as alternative energy source or not. The research was begun by slicing rotten sweet potato into small pieces, then crushed using a blender to make an extract of rotten sweet potato. Rotten sweet potato is an electrolyte compound that functions like a battery. To prove the ability as a source of electrical energy, it is necessary to perform redox reaction test. Electrodes used were copper coins and iron tacks. Copper and iron electrodes which were immersed in the sweet potato electrolyte compound caused a redox reaction to be a source of electric current. The results showed that 1 block (3 series circuit) of rotten sweet potato electrolyte can generate 1.5 electric voltage which is equivalent to small batteries. By processing in such a way, the energy of rotten sweet potato can be developed to become a source of electricity for lighting a house. This can certainly be useful for villagers who have a high enough level of sweet potato consumption resulting abundant sweet potato waste that can be utilized.

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