The rcsult of osaarch acconplishe.l showed lhal lhe slefr af paln ail plant ls able la harle as pulp Chaice the caostic process caokihg was based an easv to da an a law costape Gtion. The prccess ha s two step activilies The sten of palh oil planl as rcw naletial have been degnded by hicb aryanisn fhefiGt step the caoking tuas done at the apen alnasfet wnh mncent@lion of the caoking satunon 1 5ao.4 NaaH and 2 hau6 duztbn with yield ptaduct al Ta %. fhe secand steo ol the caokino was hade at the baile t and 3 alsns ope@lion uessue appto\ifrate tenpealute 1|at c). fhe concentalian al coaking solu on 5 a,4 NaOH and 4 haurs caaking duztion with yleld pbducl af 72,5%. fatal vield af putp tah caoking slen af palh ail plant appoxinate 57 5% The-c4?ta at pap1 n. tr6 thct hQ\-pe}ntoqe dt dr) te-gh anpotttohzaaa d\\ ot.enent dnd oqoa \r6a aI oatq otr ptdq ta o-e 'te;sile index maxinat a 0153 kN n/lrandta ngindex216949 nN n'/gt @npare th nininuh value tensile index and leaing index ton sNl. 14

Palm oil shell charcoal is obtained by roasting method. Palm oil shells are roasted on an iron pot in the open air. The process of completion is declared completed when no more smoke comes out (at a temperature of about 348 0 C). Randemen of palm shell charcoal of the result roasting, the average is 38.20%. The palm shell charcoal is pounded and the powder is passed 200 mesh sieve (74 micron), ready to be used as filler in rubber vulcanisats, which is used as raw material for the manufacture of goods of rubber or other purposes in accordance with the specification. From the study of economic techniques in Small and Medium Scale business, about the processing of carbon palm shell powder as Carbon Black can be known as follows ; Randemen raw materials = 38.20%; Production capacity of carbon black is 300 kg/day; Number of working days (after deducting with Sundays and national holidays) is 283 days/year; Working hours per day on average is 8 hours; Working schedule per day is 08.00-16.00 (1 hour break);

23% oil palm empty bunches as solid waste, 10-12% oil palm fruit fiber and 7-9% oil palm shells. Oil palm shell charcoal was made by treating palm oil shells. From the treatment of oil palm shell roasting, the average yield was 38.20% (the last temperature of roasting 348 o C, when the palm shells being roasted were no longer smoke). From the results of the chromatogram analysis of GC-MS, oil palm shell charcoal is known as 25 organic compounds with the dominant composition being cyclopropyl with a concentration of 14.87%, 17.01% of acetic acid,12.11% of benzenesulfonic acid, 7.3% of benzene and 15.59% of phenol. The characterization of the composition of the organic palm shell charcoal organic compounds needs to be done in order to develop the use of oil palm shell charcoal as an auxiliary material to increase plant fertility.

ABSTRAKPenelitian ini dilaksanakan untuk mengetahui pengaruh perlakuan pemberian serbuk arang cangkang kelapa sawit diawal dan diakhir dari penggilingan/pencampuran pada rancangan formula pembuatan contoh kompon karet. Serbuk arang cangkang kelapa sawit yang digunakan sebagai bahan pengisi (filler) dengan ukuran lolos ayakan 200 mesh (ukuran partikelnya adalah 74 mikron atau 0,074 mµ) adalah berasal dari hasil penyangraian cangkang kelapa sawit. Percobaan pembuatan kompon karet, formulasinya adalah RSS/SBR/ACS dimana phr (100/30/50) dan (100/30/60) dengan pemberian serbuk arang cangkang kelapa sawit adalah diawal dari penggilingan/pencampuran. Kemudian percobaan pembuatan kompon karet berikutnya, dengan formulasi RSS/SBR/ACS dimana phr (100/30/50) dan (100/-/40) dengan perlakuan pemberian serbuk arang cangkang kelapa sawit adalah diakhir dari penggilingan/pencampuran. Parameter yang diuji adalah waktu pemasakan kompon karet, kekerasan, kekuatan tarik, modulus 300 %, perpanjangan putus dan kekuatan sobek. Hasil uji yang baik adalah dari formulasi RSS/SBR/ACS dimana phr (100/-/40) yaitu formulasi pembuatan contoh kompon karet pada pemberian serbuk arang cangkang kelapa sawit diakhir daripada penggilingan/pencampuran. Hasil uji yang diperoleh adalah kekuatan tarik = 132 kg/cm 2 , modulus 300 % = 23 psi, perpanjangan putus = 689% dan kekuatan sobek = 26kgf/cm 2 . Sedangkan kekerasannya dari seluruh formula yang dicobakan adalah yang terendah yaitu kekerasan = 48 -49 shore -A.Kata kunci : arang cangkang kelapa sawit, kompon karet, penyangraian cangkang kelapa sawit carbon black ABSTRACTThe study was conducted to determine the effect of pre-and post-mixing treatment of adding charcoal powder of palm oils shell to the designed formula of the making of rubber compound sample. The palm oil shell charcoal powder used is derived from roasting palm shells with a particle size of 200 mesh sieve passes (particle size of 74 micron). Variation of the experiment is the formulation of RSS/SBR/ACS with phr (100/30/50) and (100/30/60) with the provision of palm oil shell charcoal at the beginning of the milling/mixing. Then the formulation RSS/SBR/ACS with phr (100/30/50) and (100/-/40) with charcoal treatment by giving palm oil shells powder at the end of the milling/the mixing. The parameter tested were rubber compound cooking time, hardness, modulus 300 %, elongation at break and tear strength. A good test result is gotten from the formulation of RSS/SBR/ACS with (100/-/40) phr, that is the formulation of the production of rubber compound sample on the adding of palm oil shell powder at the end of the milling/mixing. The finding of this research shows the result of the test as the following: tensile strength = 132 kg/cm 2 , modulus 300 % = 23 psi, elongation at break = 689 % and tear strength = 26 kg/cm 2 . On the other hand, the hardness of all tested formula was at the lowest level of hardness that is at 48-49 shore-A.Keywords : palm oil shell charcoal powder, the roasting of palm shell rubber compound, carbon black