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All Journal International Journal of Renewable Energy Development METANA Waste Technology Bulletin of Chemical Reaction Engineering & Catalysis Majalah Ilmiah MOMENTUM PROSIDING SENATEK FAKULTAS TEKNIK UMP Jurnal Inovasi Teknik Kimia Equilibrium Journal of Chemical Engineering International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Wusana Agung Wibowo, Wusana Agung
Program Sarjana Teknik Kimia, Fakultas Teknik, Universitas Sebelas Maret, Jl. Ir. Sutami No.36 A, Jebres, Surakarta, 57126
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Other

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Journal : Equilibrium Journal of Chemical Engineering

 1 
Application of Biogas Production Technology from Various Feedstocks on Small-Medium-Micro Enterprises: A Case Study Ari Diana Susanti; Cornelius Satria Yudha; Leader Firstandika; Paryanto Paryanto; Wusana Agung Wibowo
Equilibrium Journal of Chemical Engineering Vol 2, No 2 (2018): Volume 2 No 2 July 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i2.40433

Abstract

Biogas production process is an alternative method to reduce dependency on non-renewable fossil-based energy consumption and also can reduce greenhouse gases production both domestically and industrially. The existing biogas technology is suitable to be adapted in small-micro-medium enterprises and domestics, specifically for those who raise cattle. The case study was performed by observation of biogas production with various wastes as feed, namely cow dung, quail manure, and wastewater of tofu production. The study conducted via direct interviews with stake holders and visitations to the instalations. Based on our observation, biogas production from cow dung exhibits the shortest retention time compared to the others, aside from the value of C/N ratio of the biogas feedstocks. The presence of biogas production installations are significantly reducing the energy supplies among the users. Beside as biogas product, the instalations also produce solid and liquid fertilizers as by-products and have relatively high economic value. Socio – engineering problems based on the application of biodigester are also studied.
Optimization of Cow’s Milk Processing into Milk Soap Bar on Small-Medium-Micro Enterprises (UMKM) Ari Diana Susanti; Sulistyo Saputro; Wusana Agung Wibowo
Equilibrium Journal of Chemical Engineering Vol 2, No 2 (2018): Volume 2 No 2 July 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i2.40435

Abstract

The quality and quantity of cow’s milk produced were determined by the genetic, food, age, milking processing, and the treatment of cattle. The storability of fresh cow's milk tends to be short. Therefore, it is necessary to find ways to extend the life time of fresh cow's milk, one of which is by processing fresh cow's milk into other products, such as milk soap bar. The purpose of this study was to determine the appropriate method of milk soap bar production in home industries capacity and to formulate composition of vegetable oils and fresh cow's milk. The milk soap bar obtained then was analyzed in several laboratory tests such as acidity test (pH), moisture content, free alkaline content, and foam stability. Based on the research, it is turned out that the appropriate method of milk soap bar production was the cold process. The optimum formula is olive oil (11%), coconut oil (22%), palm oil (22%), fresh cow's milk (33%), and NaOH pellets (12% - equivalent to 9.2 N). The free alkaline content will decrease according the curing time. Simpler economic evaluation obtained that the production cost of milk was Rp.6,711.22/package of 80 grams of milk soap bar. Milk soap bar  is sold for Rp. 7,000.00 will provide 87.96% after-tax of ROI, 11.7– month of POT, and 65.31% of BEP.
Co-Authors Ari Diana Susanti Arief Budiman Arief Budiman Arief Budiman Cahyono, Rochim Bakti Cornelius Satria Yudha Harianingsih, Harianingsih Leader Firstandika Lutfiani, Rachmi Azizah Paryanto Paryanto Paryanto Paryanto Putra, Raka Mancini Rachmi Azizah Lutfiani Raka Mancini Putra Rochim Bakti Cahyono Rochim Bakti Cahyono Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Saputra, Nandika Aji Setyawati, Rosana Budi Sulistyo Saputro T. Bagus Tri Lusmono, T. Bagus Tri Tomi Wijanarko Efendi, Tomi Wijanarko