Food Waste Composting with The Addition Of Cow Rumen Using The Takakura Method and Identification of Bacteria that Role in Composting

Abstract

The purpose of research to measure and analyse the quality and quantity of food waste composting by adding cow rumen activator and efective microorganisme (EM4). This research do to identify the dominant bacteria that play a role in composting. The composting method applied in this research is Takakura composting. The method for bacterial identification was referred to as the Bergey’s manual which consisted of a gram stain test and a biochemical test. Three types of composter variation are being use in this composting, variation 1 consist of (food waste and maturecompost), variation 2 consist (food waste, mature compost and EM4 activator) and variation 3 consist (food waste, mature compost and cow rumen activator). The parameter which include maturity, quality (moisture content, temperature, pH, texture, color, C/N ratio, P and K), and the quantity of compost. The results showed that not all variations met the compost maturity and compost qualitybased on the SNI 19-7030-2004 standart such as organic carbon in variation 1B and C/N ratio in variations 1A and 1B. The affects of addition activators to composter give short time and good quality of compost. Composting with the addition of cow rumen activator is the fastest composting for 7 days with C/N ratiois 19.22%, P is 0.34%, Kis 2.08%. Composting with EM 4 activator occurred for 8 days with C/N ratio is 20.53%, P is 0.30%, K is 1.82%. Composting without the addition of activator is the longest composting which is 11 days with C/N ratio is 23.74%, P is 0.21%, Kis 1.76%. The results show variation 3 with the addition of cow’s rumen is the best composting with a score of 15. The results of the identification of dominant bacteria that a role play in composting are some Bacillus sp bacteria which are bacteria that degrade organic matter.