Kajian Variasi Media Tanam terhadap Bio Listrik yang Dihasilkan pada Tanaman Pakcoy (Brassica rapa L.)

Abstract

Plant Microbial Fuel Cell (PMFC) is a bioelectrochemical system that produces bioelectricity sustainably through the interaction between living plants and microorganisms in the root area (rhizosphere). This study aims to determine the effect of planting media variations on the bioelectricity produced in pakcoy plants (Brassica rapa L.) through the Plant Microbial Fuel Cell (PMFC) system. This research method uses a non-factorial Complete Random Design (CRD) with a factor of three types of planting media (humus soil, husk charcoal, and cocopeat). The results showed that the best planting medium was found in the M3 treatment (a mixture of humus soil and cocopeat) with an electric current value of 0.513 mA, an electrical voltage of 568.33 mV, an electrical power of 300.87 mW, and a harvest index of 87.97%. The initial number of colonies of microorganisms is 241, and the final number of colonies is 263.