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ABSTRAK: Industri rumah tangga yang membuang banyak limbah deterjen adalah usaha laundry (binatu). Surfaktan memiliki sifat sebagai penurun tegangan permukaan. Di dalam badan air bisa menyebabkan busa yang bisa menyebabkan rasa gatal. Sebagai limbah rumah tangga, limbah laundry ini biasanya dibuang langsung ke lingkungan tanpa pengolahan, yang jika dibiarkan, tentu saja akan berdampak buruk bagi lingkungan. Kandungan dalam limbah cucian seperti COD, BOD, TDS, pH, tingkat fosfat dan kekeruhan yang tidak memenuhi standar kualitas dapat menyebabkan lingkungan yang tercemar dan dapat mengganggu kesehatan masyarakat dan lingkungan. Dalam penelitian ini, dua metode pengolahan air diterapkan, yaitu koagulasi dan elektrokoagulasi dengan menambahkan 7 ml 5% peroksida. Penelitian ini dilakukan dalam proses batch baik elektrokoagulasi dan koagulasi. Parameter yang ditinjau adalah COD, TSS, pH, tingkat fosfat, PO4dan kekeruhan. koagulasi menggunakan koagulan tawas (Aluminium sulfat). Variasi dari dua proses koagulasi adalah, untuk koagulasi, kecepatan pengadukan adalah 300 rpm selama 10 menit dan dosis koagulan (500 ppm, 600 ppm, 700 ppm, 800 ppm, 900 ppm dan 900 ppm). Dalam elektrokoagulasi, waktu kontak divariasikan (15 menit, 20 menit, 25 menit, 30 menit). Hasil terbaik yang diperoleh adalah pengolahan air limbah menggunakan metode eletrokoagulasi dengan penurunan COD 76%, BOD 83%, kekeruhan 98% dan fosfat 99,9%.ABSTRACT Problems with laundry waste, especially in the content of surfactants in detergents. Surfactants have properties as surface tension reducers. In the body of water can cause foam that can mediate itching. As domestic waste, this laundry waste is generally disposed directly to the environment without any treatment, which if left unchecked, of course, will be bad for the environment. The content in laundry wastes such as COD, BOD, TDS, pH, phosphate level and turbidity that do not comply with quality standards can cause polluted environments and can disrupt public health and the environment. In this study, two water treatment methods were applied, namely coagulation and electrocoagulation by adding 7 ml of 5% peroxide. This research was carried out in a batch process both electrocoagulation and coagulation. The parameters reviewed were COD, TSS, pH, phosphate level, PO4-and turbidity. Coagulation using alum coagulant (Aluminum sulfate). The variation of the two coagulation processes is, for coagulation, the stirring speed is 300 rpm for 10 minutes and the coagulant dose (500 ppm, 600 ppm, 700 ppm, 800 ppm and 900 ppm). In electrocoagulation contact times were varied (15 minutes, 20 minutes, 25 minutes, 30 minutes). The best results obtained were wastewater treatment using the Electrocoagulation method with a COD reduction of 76%, BOD 83%, turbidity 98% and phosphate 99.9%.

Jatropha oil which is non-edible oil were hydro-crack at atmospheric pressure using an activated wood char catalyst in a fixed bed reactor. The hydro-cracking process was carried out at three temperature variations of 400, 450 and 500oC, and three variations of the oil feed injection rate of 2/2, 2/5 and 2 mL/10 minutes. The catalysts were characterized using SEM and BET. The composition of the liquid product obtained from the hydro-cracking process was analyzed using GC-MS. The effects of operating temperature and oil feed injection rate on oil recovery and conversion have been discussed. The results showed that the feed injection temperature and rate had an effect on the yield and conversion. The highest yield of 59.8% oil liquid products was achieved at a temperature of 450oC with injection rate of 2 mL/10 min. The composition of the oil-liquid product was dominated by heptanal at 32.9% -mass. Alkanes group contain C5 to C20 and alkene compounds consist of C8 until C18.

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