Composition of organic waste in Surabaya was 54.31% of the total generated waste. One of the biodegradable organic waste is banana peel and sawdust. There are a lack of processing banana peels and sawdust into useful products. The variation of vermicompost materials in this research were vegetable waste (27%), banana peels (27%), and sawdust (46%). The physical characteristics of compost (temperature, moisture content, texture, color, particle size of compost, shrinkage of compost material and weight of L.lumberus worms) were analyzed. The results of this study shown that the physical characteristics of compost in reactors 1 (no adding worms), 2 (adding 100gr worms/kg organic waste), and 3 (adding 250 gr worms/kg organic waste) (temperature, texture and color) have met the standards (Indonesian National Standard number 7763:2018 and 19-7030-2004) but the moisture content did not meet the standards. R2 has a percentage of decreasing of worms about 16.4% of worms but the worms in R3 increased up to 8.3% of worm weight. The shrinkage of compost material in R1, R2, and R3 was 64.67%, 76.45%; and 71.01%, respectively.
Conventional organic waste composting is one of the processing of organic waste that produces fertilizer. However, the conventional composting process for organic waste lasts 1-3 months. Vermicomposting is composting that lasts a short time, and in addition, vermicomposting produces compost and worms with a high selling value. So, in this study, Musa Paradisiaca L (MPL) peel and sawdust waste were composted using the vermicomposting method into compost. The primary data in this study consisted of monitoring the C/N ratio, temperature, pH, moisture content, texture, the particle size of compost for 3 weeks of the composting process. Testing the analysis of the effect of using Lumbricus Rubellus (LR) earthworms in the composting process of MPL peel waste and sawdust by using LR earthworms. The study results showed that LR worms had no effect on temperature, pH, water content, and C/N ratio during the composting process of MPL peel waste but did affect the texture, particle size, and product of compost weight. pH, moisture content, and temperature of compos with adding LR earthworms and without LR worms was 7, less than 50%, 27-29 0C, respectively. The C/N ratio of compost that uses LR earthworms was 28, while the C/N ratio of composting that uses LR earthworms was 33.
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