Utilization of Rockwool Waste as a Silencer in Mufflers

Abstract

The Program to Utilize Rockwool Waste as a Silencer in Mufflers is an innovation program to reduce the generation of non-B3 solid waste in equipment maintenance activities, where rockwool, which is usually waste, can be utilized by MSMEs around the company as the main material for muffler silencers in their exhaust workshop businesses. have. So, this program can be useful to support MSMEs around the company. In addition, for companies utilizing this waste, it can save waste processing costs which are routinely incurred by the company. Quantification of environmental improvements as a result of this program was able to reduce the generation of non-B3 solid waste by 750 kg (0.75 tons) and save costs of Rp. 1,687,500, - which was obtained from the calculation of cost savings for rockwool waste disposal. In addition, reducing noise on the environment refers to the Minister of the Environment Number P.56/MenLHK/Setjen/Kum.1/10/2019 concerning Noise Quality Standards for New Types of Motor Vehicles and Motor Vehicles that are being produced in Category M, Category N, and Category L, where after using rockwool as a silencer the exhaust produces noise (dB) below the threshold. noise (dB) below threshold. This innovation program also has added value in the form of a value chain, for the company it saves Rp. 1,687,500 in waste management costs. For MSME consumers, they can save a material purchase budget of IDR 1,125,000. Furthermore, for suppliers with routine maintenance activities by the company, the use of rockwool as a heat insulator for repaired equipment will always be needed. This will be an advantage for the rockwool supplier as the main and sustainable supplier, because the supplier can supply 1.2 tons per maintenance process.