Karakteristik Briket Tempurung Kelapa Dengan Penambahan Minyak Atsiri Cengkeh Sebagai Potensi Repelan Nyamuk

Abstract

Coconut shells are a biomass waste product available in abundance in Indonesia; however, their use is still predominantly limited to traditional fuel, resulting in relatively low added value. One approach to increasing this added value is to process them into biomass briquettes by adding clove essential oil, which contains eugenol—a natural mosquito repellent. This study aims to analyze the effect of adding clove essential oil on the physical and thermal characteristics of coconut shell briquettes and to evaluate the potential repellent effect against mosquitoes during the combustion process. The study used a one-factor completely randomized design (CRD) with four treatments of clove essential oil concentration—0%, 3%, 5%, and 7%—each with three replicates. The parameters observed included moisture content, ash content, calorific value, burning duration, and mosquito repellent potential. Data were analyzed using a one-way ANOVA followed by a BNJ (Tukey) test, while data that did not meet the assumptions of a normal distribution were analyzed using the Kruskal–Wallis test. The results showed that the addition of clove essential oil had a significant effect on moisture content and burning duration but did not have a significant effect on ash content and calorific value. All treatments met the briquette quality requirements based on SNI 01-6235-2000. Increasing the concentration of clove essential oil also enhanced the mosquito repellent effect, with the 7% treatment yielding the best results. The addition of clove essential oil has the potential to enhance the functionality of coconut shell briquettes as functional biomass without significantly reducing their energy quality.