Pembuatan Briket dari Bottom Ash dan Arang Tempurung Kelapa sebagai Sumber Energi Alternatif

Abstract

Limited availability of energy resources, especially fuel unrenewable become a serious threat to society. The use of coal as an energy source replacement for fossil fuels is very beneficial, but on the other side can cause problems such as coal ash. Coal ash is composed of bottom ash (bottom ash).Through research, it is known that the bottom ash can be processed into charcoal, when mixed with coconut shell, plus a binder and further processing can be made into briquettes. It can be used as an alternative fuel, bottom ash and coconut shell can give positive impact for the environment.This study was conducted with a variety of compositions between bottom ash and coconut shell charcoal. The treatment uses ratio of 100%: 0%; 80%: 20%; 60%: 40%; 50%: 50%; 40%: 60%; 20%: 80%; 0%: 100%. The results showed that the optimum variation of briquettes is a variation of 20% bottom ash and 80% coconut shell charcoal, this briquettes has a water content of 3.45%, ash content of 17.32%, calorific value of 7945.72 cal/g, compressive stength of 2.18 kg/cm2, CO 105 mg/Nm3, Cu 29.83 mg/l (745,6 x 103 µg/g) and Zn 32.99 mg/l (824,8 x 103 µg/g). The result of the briquttes characteristics test showed that with increasing amounts of coconut shell charcoal can increase the moisture content and calorific value, and be able to lower ash content and compressive strength