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All Journal Warta IHP (Warta Industri Hasil Pertanian)
Suherman, Ade
Balai Besar Industri Agro
Agriculture, Biological Sciences & Forestry Industrial & Manufacturing Engineering

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(The Study of Making ceiling from Compound of Fly ash, Bottom ash, cement and Short Cocnut Fibre and Techno-economic Analysis) G Pohan, H; Suherman, Ade
Warta Industri Hasil Pertanian Vol 24, No 01 (2007)
Publisher : Balai Besar Industri Agro

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Abstract

The research of making ceiling from mixture of main component (fly ash,and bottom ash)with cement and short of coir fibre have been conducted. The treatment consist of the amount of component, cement and short of coir and fibre size. The caracteristic of ceiling to be analyzed as according to national standar of Indonesia SNI No.0233-1989 consist of: external profile, specific gravity, size measure, compactness, strong flex, ability nailed, wight fill, and water absorbtion. The results show that ceiling produced has difference between ceiling from the fly ash and bottom ash. From the both of main component seen that surface of ceiling are same burst and streng flex still lower. The strong flex from fly ash between 18,4-24,5 kg/cm3,specific gravity between 1,47-1,65 g/cm3 and water absorbtion between 15,95-19,7%, while from bottom ash the strong flex between 11,2-23,2 kg/cm3, specific gravity between 1,52-1,63 g/cm3 and water absorbtion between 16,25-20,58%. The analysis of tehno-economic indicate that cost of goods manufactured equal to Rp780,-/ceiling. At the price of selling Rp1.300,-/ceiling,hence return of investment during 2,5 year with the totally of invesment equal to Rp 19.500.000.
(The Study of Making Bamboo Charcoal and Vinegar using Pyrolisis Kiln of Semi Commercial Scale) Pohan, H.G; Wijaya, Hendra; Suherman, Ade
Warta Industri Hasil Pertanian Vol 27, No 01 (2010)
Publisher : Balai Besar Industri Agro

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Study on production of bamboo charcoal an vinegar have been carried out semi commercially using pyrolysis furnace with a volume of 6 m3. The result of this study is expected to be a model of processing bamboo charcoal and vinegar for rural area. Observations were made on the characteristics of pyrolysis, yield of charcoal and bamboo vinegar, and characteristics of charcoal i.e., water content, ash, volatile matter, fixed carbon, calories, and pH. The bamboo raw material availability and techno-economical analysis were also conducted. The study revealed that the temperature of the out coming gar during the pyrolization process was 300 to 350 oC, the average yield of charcoal and vinegar were 27.33% and 33.61% respectively. The resulted bamboo charcoal has water content of 3.06%, volatile matter at 950oC was 40.03% (wb), ash content was 7.2% (wb), fixed carbon of 52.37% (wb) and calorific value of 5777 cal/g. The resulted bamboo vinegar has pH 4 and its refractive index was ranged from 3.25 - 3.75. The availability of raw material bamboo in the Village at Desa Tenjojaya, Kecamatan Cibadak Kabupaten Sukabumi, within the radius of 4 km was 3620 ton, while the possible selling price of the resulted charcoal was Rp. 3.000.-/kg whereas the vinegar was Rp.5000.-/kg. The techno-economical analysis of the processing unit of bamboo charcoal and vinegar with the capacity of 10 tons of charcoal per month revealed Present Value (NPV) of Rp.596.000.000,-, the Internal Rate pf Return (IRR) of 78% or Pay-back period was 1.3 years.
Co-Authors G Pohan, H Pohan, H.G Wijaya, Hendra