Oil palm empty fruit bunches (OPEFB) are themost solid palm oil waste. OPEFB has often been processed into compost with the addition of certain activators. It is expected that with the addition of a consortium bioactivator composting of OPEFB can be faster and the compost produced has good nutrient content. The study aims was to determine the ability of bioactivator bacteria of cellulolytic consortium in degrading TKKS of incubation laboratory scale for 30 days. A consortium of compost bioactivator used were Bacillus sp. S43, Bacillus cereus strains of IARI-MB-6, Bacillus cereus strains TS11, Alcaligenes faecalis strains ZJUTBX11, Bacillus sp. 13847, Stenotrophomonas sp. S169-III-5, Alcaligenes faecalis strains KH-48 and Bacillus cereus strain Y22 by a comparison of 1:1:1:1:1:1:1:1. The results showed that bioactivator consortium was able to degrade OPEFB which on P4 (OPEFB + chicken manure + consortium isolate) reduced organic C from 50.1 to 34.5, increased total nitrogen from 0.73 to 1.35 and reduced the C/N ratio from 37.11 to 25.56 and produced compost phytonutrients and not phytotoxicity.

Oil palm plantations are very extensive in Indonesia which have produced oil palm solid waste in the form of oil palm empty fruit bunches (OPEFB, shells and fibers. Generally, OPEFB is processed into compost but has a constraint that requires a long time of three months. The solution is to provided bioactivators.  This study aims to determine variations in the amount of cellulolytic bioactivators in composting OPEFB that is 0 ml (P1), 50 ml (P2), 75 ml (P3) and 100 ml (P4). Composting is carried out at an incubation laboratory scale for 45 days. The best research results were obtained in P4 treatment with compost quality: N-total of 2.13; C-organic: 35,45 and C/N ratio 16,68 which are in accordance with SNI standards. This cellulotic bioactivator can be developed for the production of TKKS compost on a larger scale.