The increase in energy consumption and an increase in plastic waste generation are two major problems that arise along with economic growth and the increase of population. Styrofoam is one type of polystyrene plastic waste that can be processed into liquid fuels by cracking process. In this study, the cracking process of polystyrene plastic waste into liquid fuel carried by the catalytic cracking process using Al 2 O 3 as catalyst. This study aimed to determine the effect of the catalyst weight, length of cracking time and range of temperature in the catalytic cracking process of polystyrene plastic waste into liquid fuel toward the mass and characteristics of liquid fuels produced and to determine the composition of liquid fuels produced. The catalytic cracking process of polystyrene plastic waste with catalyst was done in the fixed bed type reactor by heating the reactor with a heater, where the process took place at temperature of 150°C, 200°C, 250°C and 300°C and the length of the process was varied into 20, 40, and 60 minutes and the catalyst weight was also varied, which were 4%, 6% and 8%, while the styrofoam weight was 250 grams. From the research, the highest mass of liquid fuel derived from polystyrene catalytic cracking process was in the amount of 48.8 grams and liquid yield percentage of 19.5% at temperature of 250°C, cracking time of 60 minutes and weight of 8% catalyst, while the characteristics of liquid fuel that were approaching the characteristics of gasoline was at temperatures of 250°C, cracking time of 60 minutes and weight of 6% catalyst, in which each value of density of 0.763 g/ml, specific gravity of 0.778 and o API gravity of 50.2. While other liquid fuels obtained from the cracking of polystyrene were still within the tolerance range characteristic properties of gasoline. Liquid fuels produced from the catalytic cracking process was analyzed using a GC-MS, in which the analysis results indicated that liquid fuels were included into the gasoline fraction.

Peningkatan konsumsi energi dan peningkatan timbulan sampah plastik merupakan dua permasalahan besar yang muncul seiring dengan pertumbuhan ekonomi dan pertambahan penduduk. Salah satu jenis sampah plastik polystyrene yang dapat diolah menjadi bahan bakar cair dengan proses perengkahan adalah styrofoam. Pada penelitian ini, proses perengkahan sampah plastik polystyrene dilakukan dengan proses perengkahan katalitik dengan menggunakan katalis Al2O3. Penelitian ini bertujuan untuk mengetahui pengaruh temperatur terhadap persentase yield produk dan karakteristik produk yang dihasilkan dari proses perengkahan katalitik sampah plastik polystyrene menggunakan katalis Aluminium Oksida. Proses perengkahan katalitik dilakukan didalam reaktor jenis fixed bed, dimana proses berlangsung pada suhu 150 oC, 200 oC, 250 oC dan 300 oC dengan waktu perengkahan 60 menit dan berat katalis 6% dari berat styrofoam yaitu 250 gram. Dari hasil penelitian diperoleh persentase yield cairan tertinggi sebesar 17,0% pada temperatur 250 oC, sedangkan karakteristik bahan bakar cair yang mendekati karakteristik gasoline yaitu pada temperature 250 oC, lama waktu perengkahan 60 menit dan berat katalis 6%, dimana masing-masing diperoleh nilai densitas sebesar 0.763 g/mL, specific gravity sebesar 0.778 dan oAPI gravity sebesar 50.2. Untuk bahan bakar cair yang diperoleh dari hasil perengkahan polystyrene pada suhu 150 oC, 200 oC dan 300 oC masih berada dalam rentang toleransi karakteristik bensin. Bahan bakar cair yang dihasilkan dari proses perengkahan katalitik dianalisa menggunakan alat GC-MS, dimana hasil analisa menunjukkan bahwa bahan bakar cair tersebut termasuk kedalam fraksi bensin.

The nature of plastic which is difficult to decompose in nature can have a negative impact on the environtment and health. Encourages effort to develop bioplastik or biopolymer from nature in the formation product. In this study the formation of biodegradable modified rice flour biopolymers using strartfruit. The result of the formation of biodegradable plates with the addition of strartfruit result of water absorption and biodegradation tests also showed that the addition of the volume of 10,15,20,25 Ml could increase water absorption and biodegradation.So it can be concluded that strartfruit filtrate can be used in modifying biodegradable plate to improve it's characteristic

Pada masa panen di desa Sungai Dua Banyuasin, limbah biomassa yang berupa sekam padi, tempurung kelapa dan tempurung biji karet belum termanfaatkan secara optimal. Salah satu proses pengolahan limbah biomassa tersebut adalah dengan menggunakan teknologi pirolisis yaitu Unit Thermal Cracking, Alat ini dapat mengolah limbah biomassa menjadi asap cair dan arang yang akan memiliki nilai jual. Tujuan penelitian pengabdian ini adalah untuk mengetahui respon dan membantu masyarakat dalam pengolahan limbah biomassa dan memberikan solusi produk yang dapat menghilangkan bau tidak sedap dalam pengolahan karet dengan bantuan Unit Thermal Cracking. Mitra pengabdian adalah masyarakat khususnya kelompok tani dan perangkat desa Sungai Dua Banyuasin. Pengabdian ini dilakukan dengan beberapa tahap penyuluhan, difusi iptek, pelatihan dan serah terima. Hasil yang diperoleh menunjukkan bahwa banyak masyarakat belum mengetahui sistem pengolahan limbah biomassa dengan alat ini dan setelah dilakukan pelatihan akhirnya masyarakat paham dan mengerti sistem pengolahannya dan manfaat yang didapatkan dari produk yang dihasilkan yaitu asap cair serta produk sampingan yaitu arang yang masih bisa dimanfaatkan. Kata Kunci : biomassa; pirolisis; asap cair.  ABSTRACT             At harvest time in Sungai Dua Banyuasin village, biomass waste in the form of rice husks, coconut shells and rubber seed shells has not been optimally utilized. One of the biomass waste treatment processes is by using pyrolysis technology, Unit Thermal Cracking, This unit can process biomass waste into liquid smoke and charcoal which will have a sale value. The purpose of this service research is to determine the response and help the community in processing biomass waste and provide product that can eliminate bad odors in rubber processing with the help of the Thermal Cracking Unit. The service partners are the community, especially farmer groups and village officials in Sungai Dua Banyuasin. This service was carried out in several stages of counseling, diffusion of science and technology, training and handover the unit. The results obtained indicate that many people do not know the biomass waste treatment system using this tool and after training, the community finally understands the processing system and the benefits obtained from the products produced, namely liquid smoke and a byproduct, namely charcoal, which can still be used.

Polystyrene is useful product that widely used today.  But when it becomes waste, Polystyrene can cause environmental problem such as air pollution, soil contamination, as well as economical resistence due to the increase of space and disposal costs.  On the other hand Polystyrene can be converted into fuel.  It is expected can be a solution of the problem.  The aim of this research is to convert polystyrene plastic waste into useful fuel with catalytic cracking process.  Zeolit and Al2O3 was used as catalyst in this research as musch as 8 % feed.  Temperature set at 250 oC.  At the optimum reaction condition (catalyst Al2O3 and the length of cracking time is 30 minutes) the liquid yield of catalytic cracking process was 29.40 %.  Physical properties like density, spgr, oAPI gravity and calorific value of fuel samples is determined and compared to gasoline standard. The result showed that density, spgr, oAPI gravity and calorific value was close to the density, spgr, oAPI gravity and calorific value of gasoline standard.