Pembuatan Briket Dari Bottom Ash Dan Arang Sekam Padi Sebagai Sumber Energi Alternatif ( Studi Kasus : Industri Tekstil X, Ungaran – Semarang )

Abstract

Briquette is a fuel substitute that can be used as an alternative and renewable energy. Bottom ash including B3 waste materials are hazardous and toxic while rice husk is an agricultural waste both solid waste is not optimal reuse. The calorific value of each waste are bottom ash according Samadhi (2008) of 3324 cal/g and rice husk according to the Ministry of Agriculture (2010), 1 kg of rice husk has a calorific value of 3300 cal/g.In this case, waste bottom ash and rice husk deserves to be reused because it has a fairly high calorific value.This study wasconductedwith a variety ofcompositionsbetweenrice huskandbottom ashusinga comparison are100%:0%;80%:20%; 60%:40%; 50%:50%; 40%:60%; 20%:80%; 0%:100%.This study uses briquettes quality testing standards including : test characteristics include heating value, moisture content, ash content (residue) ; compressive strength test ; testing of air pollutants ; and heavy metal content test using AAS (Atomic Absorption Spectrophotometer). The results showedthat theoptimumvariation ofbriquettesisa variationof 80%rice huskand20% bottom ash, this briquetteshas awater content of3.340%, ash content of51.023%, calorificvalue of3478.455cal/g, compressive stength of 2.037kg/cm2, CO 893.57mg/Nm3, Zn31.207mg/landCu 12.987mg/l. The result of the briquttes characteristics test showed that with increasing amounts ofrice huskcanincreasethe moisture contentandcalorific value, and be ableto lowerash contentandcompressive strength