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Abstrak :
Penelitian ini bertujuan untuk mendapatkan ukuran partikel arang aktif serbuk gergaji sebagai bahan pengisi dan waktu vulkanisasi yang tepat dalam pembuatan kompon ban luar kendaraan bermotor roda dua. Variasi ukuran partikel arang serbuk gergaji adalah 40-60 nm, 80-100 nm, 400 mesh dan variasi waktu vulkanisasi 20 menit dan 30 menit. Ukuran partikel arang serbuk gergaji sebagai bahan pengisi dan waktu vulkanisasi berpengaruh nyata terhadap sifat fisik kompon karet, yaitu tegangan putus, kekerasan, ketahanan kikis, ketahanan usang untuk perubahan tegangan putus, namun tidak berpengaruh nyata terhadap ketahanan usang, untuk perubahan kekerasan kompon karet perlakuan terbaik adalah kombinasi perlakuan F W (ukuran 2 1 partikel arang serbuk gergaji 80-100 nm dan waktu vulkanisasi 20 menit) memenuhi spesifikasi pasaran dengan 2 karakteristik kompon karet meliputi, tegangan putus 142 kg/cm , kekerasan 58 ShoreA, ketahanan kikis 236 DIN 3 2 mm , ketahanan usang untuk kekerasan 58 ShoreA, dan tegangan putus 234 kg/cm .

Abstrak :
Pyrolysis is the thermal degradation of a carbonaceous solid by heat in the absence of oxygen. The feedstocks, such as biomass or solid wastes, are heated to a temperature between 400 and 600°C. The reaction produces three products: gas, pyro-fuel oil, and char. Pyrolyzing solid wastes to make pyro-oil and bio-char provides a renewable, low cost way to produce liquid fuel. The pyro-oil could be mixed with diesel fuel and the fuel properties suitable for a diesel engine generator could be investigated. This work uses a controlled microwave heating technique to pyrolyze used rubber tires into pyro-oil. The thermal treatment of received used rubber tires was done in a modified domestic microwave with a controlled heated stirred bed system. In earlier work, it was found that rubber tires are a poor absorber of microwaves. An appropriate microwave-absorbing material, such as activated char, was added to initiate the pyrolysis process, thus producing pyro-oil. The characteristics of this pyro-oil and the effect of the microwave absorber on the yield of pyro-oil are presented in the paper. Particular attention was paid to the temperature profile during microwave heating of the used rubber tires. The benefit of this application is the conversion of the waste tires into renewable and high calorific pyro-oil. In addition, properties of tire pyrolysis oil have been determined and compared with the results of commercial diesel fuel.

Abstrak :
ABSTRAK
Ban habis masa pakai merupakan salah satu masalah lingkungan terbesar yang tidak bernilai harganya jika tidak dilakukan pengolahan dengan baik. Penelitian ini bertujuan untuk mencari metode pengolahan yang memberikan nilai tertinggi untuk material ban bekas mobil dan menjadikan salah satu bahan baku produksi masal. Daur ulang sebagai bahan baku substitusi produksi ban baru menjadi salah satu pilihan potensial untuk memperoleh pemanfaatan dengan konservasi nilai material yang sebaik-baiknya menurut prinsip Production for Material Value Conservation. Pada penelitian ini karet remah dari material ban mobil bekas telah diuji sebagai bahan baku pencampur dalam memproduksi ban. Kompon karet dibuat dengan variasi campuran material karet dari ban mobil bekas dan material karet baru. Hasil uji menunjukkan persentase material ban bekas yang paling optimum untuk campuran material karet ban mobil adalah sebesar 15 , ban sepeda motor sebesar 25 , dan ban sepeda sebesar 50 . Pemanfaatan ban bekas mobil sebagai salah bahan baku pencampur dalam memproduksi ban selain bermanfaat bagi kelestarian lingkungan juga bermanfaat bagi perekonomian karena memberikan manfaat multiplier effect bagi perusahaan ban, perusahaan pengumpul dan pengolah limbah ban, dan masyarakat di sekitarnya.

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ABSTRACT
End of life tires are one of the greatest environmental concerns that are not worth the value if not properly treated. This study aims to find the method of processing that provides the highest value for used car tire material and make one of the raw materials of mass production. Recycling as a substitute raw material for new tire production becomes one of the potential options for obtaining utilization with the best possible conservation of material value according to the principles of Production for Material Value Conservation. In this research, crumb rubber from used car tire material has been tested as raw material of mixer in producing tire. Rubber compound is made with a mixture of rubber materials from used car tires and new rubber materials. The test results show the most optimum percentage of used tire material for rubber tire material mixture is 15 , motorcycle tire is 25 , and bicycle tire is 50 . Utilization of used car tires as a raw material mixing in producing tires in addition to beneficial for environmental sustainability is also beneficial to the economy because it provides multiplier effects for tire companies, tire collection and processing companies, and surrounding communities.