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PEMBUATAN PUPUK KALIUM-FOSFAT DARI ABU KULIT KAPOK DAN TEPUNG FOSFAT SECARA GRANULASI Aprilina Purbasari; Faleh Setia Budi
TEKNIK Vol 29, No 2 (2008)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.064 KB) | DOI: 10.14710/teknik.v29i2.1929

Abstract

Kapok-husk ash containing + 28% potassium can be used as raw material of potassium-phosphatefertilizer. In this research, kapok-husk ash is mixed with phosphate powder by granulation process toproduce potassium-phosphate fertilizer. Operation variables are granulation time (4, 7, 10 minutes),kapok-husk content (3, 5, 7, 9 %-w/w), and adhesive liquid type (phosphoric acid solution andaquadest). The result shows that the increasing granulation time is proportional to fertilizer yield;the increasing kapok-husk ash content is proportional to potassium content, but inverselyproportional to phosphate content in fertilizer; and phosphoric acid solution is better than aquadestas adhesive liquid referred to fertilizer yield.
BIOBRIKET DARI CAMPURAN LIMBAH KULIT BIJI METE, SEKAM DAN JERAMI SERTA BUNGKIL JARAK, SEKAM DAN JERAMI Faleh Setia Budi; Luqman Buchori
TEKNIK Vol 34, No 1 (2013)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.942 KB) | DOI: 10.14710/teknik.v34i1.4813

Abstract

The petroleum is the fuel derived from fossil which can not be renewable and the deposit in the earth is not morenow. In the middle 2008, the price of petroleum achieved US$ 147/Barrel because the supply of petroleum toworld market was reduced. This situation forced the appearance of the alternative energy which can replace thefossil fuel in the future. Their result of combustion has low emission so that they can be reduced the pollutionand were environment friendly. Biobriquette is the one alternative energy which expected to be able to replacethe kerosene and LPG. This research aims to get the exactly composition and type in manufacturing ofbiobriquette from cashew nut shell and jatropa shell waste. The variables choose as the independence variablewas the type of waste (cashew nut shell and jatropa shell) and the compositions (40, 60, 80 and 100%). Theothers are the fixed variable such as the size of briquette 4 cm and the total weight/biquette 25 g. The responseor parameters observed in the experiment were the color, the value of calor, the length of combustion and thecolor of fire. The result of experiment showed that composition of the material greatly affected the quality ofbriquette produced. The composition 100% owns the highest calor of combustion. The calor of Jatropa wastewas higher than that of cashew nut shell.