Senin, 23 Januari 2012

Utilization of Banana Skin as Dry Battery Raw Materials

Alternative energy is the energy source produced from ingredients that have not been widely utilized. Currently, research on alternative energy over to the alternative energy use and natural ingredients sourced from nature. According Sutikno (2008) of electrolytes in batteries are acidic, so the fruit can become acidic electrolyte. Innocencio Krishna Primary (2007) adds, that in addition to oranges and apples, other fruits, can also generate electricity. Experiments Wasis Sucipto, S. Pd (2007) proved that a banana peel and orange can be used as a source of direct electric current. This raises issues such as: How is the performance (voltage and resistance) dry batteries which use raw materials from banana skins? and How does a banana skin type of battery performance?
Results showed that the average voltage produced by the dry battery with electrolyte banana skin is 1.24 volts. And resilience in the average wall clock for 5 days 6 hours (135 hours). Construction of a banana skin dry batteries with regular batteries. The difference is in the electrolyte. Banana peel contains some minerals that can serve as an electrolyte. Minerals in the greatest number is potassium or potassium (K +). Banana skins also contain salts that contain sodium chloride (Cl-) in small amounts. The reaction between potassium or potassium and sodium salts can form potassium chloride or KCl. According to Drs. Asep Jamal (2008) KCl is a strong electrolyte capable of ionized and conduct electricity.
Bananas also contain Magnesium and Zinc. Magnesium (Mg) can react with the dichloride and a strong electrolyte. Number of Magnesium is 15% of the total amount of bananas. Bananas also contain Zinc (Zn) which is the positive electrode. amount of zinc content in bananas only reach 2%. So that the minerals that were most responsible conduct electricity is potassium or potassium, which react with the sodium salt. Possible salts of magnesium and zinc also played a part in delivering and storing electric current direction.

The results also showed, control battery can last more than 7 days while the battery is just a banana skin for less than 6 days. This is due to control battery has a compound that serves as a depolarization. The compound used is mangandioksida. Although bananas also contain manganese, but the number was only 0.6 mg per 100 g. Besides, each reaction in a battery having a polarization process due to hydrogen gas that escapes. Bananas and banana peels primarily containing more than 60% water content (H20), which can be detached in the event of a chemical reaction. So the possibility of polarization is very large. This is resulting in differences in resistance between the battery and battery control banana skin large enough. While these three types of bananas, the banana milk that has the highest resistance. However, due to the difference in resistance between the banana milk banana and other types of less than 24 hours, it can be argued that the resistance between the three types of bananas does not provide significant differences.a

Other complementary data, the net weight of the battery data show that the average banana skin used was 3.3 grams per battery. While the banana skin intact on average 27 grams per one fruit. So that one could be a banana peel about 8 batteries. This is another advantage of the dry battery of a banana skin.
Conclusions from the study above is a dry battery using a banana peel raw material has an average voltage of 1.2 V and the resistance of an average of 5 days 7 hours and Among the three types of bananas does not provide the difference in performance (voltage and resistance) are significant.