<![CDATA[Waste disposal activity is an activity that is often done so that organic waste processing is needed. Organic waste has some difficulties in collection and disposal. Composting is a suitable process, because the raw material and the place and process do not depend on large tracts of land. Composting is a natural microbiological decomposition process from organic waste. One of the latest technologies in accelerating reactions is to use effective microorganisms (EM-4). Composting using EM-4 is a technology for activa ting microorganisms that already exist in a place, such as crop residues. This study aims to study the particle size and height of the pile of 5, 10, and 15 cm with the use of EM-4 to the value of the ratio C / N, P, K and pH. The results of the research that have been carried out show the process of making compost from market organic waste using an EM-4 activator. at the best process conditions obtained at particle size; garbage 3 cm, with a stack height of 10 cm with C / N, P, K and pH values ​​respectively 12.80%, 2.99%, 4.12% and 7.5. so the results obtained are still included in the SNI standard 19-7030-2004]]>
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