Abstract
A study was conducted on the utilization of biomass organic waste in the form of grass-clippings waste to make compost. The study proposed to determine the effect of different types of activators used on the temperature, duration of composting and the characteristics of the compost produced. The material used for making compost is grass-clipping, mixed with goat manure and rice bran, then inoculated using three types of commercial activators, EM4, Green Phoskko (GP-1) and Agrisimba. Observation of temperature changes during composting was carried out every day. Compost products were then tested for quality including pH, water content, C-Organic, total nitrogen, C/N ratio, and P2O5 levels. The test results showed that the temperature changes of the sample with Green Phoskko and Agrisimba activators were almost the same, but both were different from the sample using EM4 activators. The composting process of all sample treatments lasted for 14 days. The quality of compost produced from the three treatments has met the quality requirements according to the Indonesian National Standard SNI 19-7-30-2004 regarding compost from domestic organic waste.
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