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Bambang Trisakti
Departemen Teknik Kimia, Fakultas Teknik Universitas Sumatera Utara
Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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PENGARUH KONSENTRASI RAGI DAN WAKTU FERMENTASI PADA PEMBUATAN BIOETANOL DARI BIJI CEMPEDAK (Artocarpus champeden spreng) Irvan; Ayu Wandira Putri; Sri Ulina Surbakti; Bambang Trisakti
Jurnal Teknik Kimia USU Vol. 5 No. 2 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.85 KB) | DOI: 10.32734/jtk.v5i2.1530

Abstract

Needs fuel as a source of energy every day is increasing, while the energy reserves of petroleum (fossil) dwindling, therefore, to meet the needs of the fuel it is necessary to develop alternative fuels that are renewable and home environment (renewable ). Etonal Bioethanol is made from plants containing starch, sugar and other plant cellulose. Where in this study using jackfruit seeds that contain high enough carbohydrates as raw materials. This research aims to make bioethanol from cempedak seeds with various concentrations of yeast and fermentation time. The main process is hydrolysis; fermentation using yeast Saccharomyces Cereviciae; and purification by distillation and condensation. Variables used are changes in the concentration of yeast 3%, 6%, 9% and 2 days, 3 days, 4 days fermentation period. From the analysis of the research results obtained bioethanol yield per amount of raw materials is the best starting 12,5 ml/kg with a density of 0.962 g/ml and the calorific value sebasar 181.925 kcal/kg, which is the variation of the concentration of 9% and 3 days of fermentation period.
PENGARUH RASIO RECYCLE TERHADAP PRODUKSI BIOGAS MENGGUNAKAN REAKTOR TANGKI BERPENGADUK BERBANTUKAN MEMBRAN ULTRAFILTRASI PADA KONDISI TRANSISI (45 oC) Bambang Trisakti; Irvan; M.Taufan Anantama; Arbie Saldi Zusri; Alfian Haikel Lubis; Sri Eka Cahyani
Jurnal Teknik Kimia USU Vol. 8 No. 1 (2019): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.948 KB) | DOI: 10.32734/jtk.v8i1.1604

Abstract

Anaerobic digestion is one of solution to environmental problems and energy sources for current energy needs. In anaerobic digestion, organic material is degraded by bacteria, which is carried out without oxygen, and converts it to a mixture of methane and carbon dioxide. POME can be degraded anaerobically in anaerobic digester to produce biogas. This study aims to increase the conversion of biogas produced using a 2 liter Continuous Stirred Tank Reactor (CSTR) type digester in the methanogenesis process by recycling the effluent produced through the ultrafiltration membrane in a transition condition (45oC). The process is carried out by varying the recycle ratio, which is 0%, 15% and 25% on HRT 6 days with a condition of pH 7 ± 0.2. The highest average biogas production was achieved at the 25% recycle ratio of 33.15 x 10-5 L / mg VS. day, with the composition of methane, carbon dioxide and hydrogen sulfide each of 79%; 19%; and 0.006%, with degradation of VS and COD of 39.58% and 66.33% respectively. For the composition of the highest CH4 content obtained at a variation of the 15% recycle ratio which is equal to 85% while for the composition of carbon dioxide, and hydrogen sulfide each is 14%; and 0.0076%.
Co-Authors Alfian Haikel Lubis ANWAR, DEDY Arbie Saldi Zusri Ayu Wandira Putri Basril Amirza Harahap Chamsa Triyadi Cut Novaliani Hasbi Elwina Widiarti Fristyana Sosanty Lubis, Irvan Hari Tiarasti Irma Suraya Irvan Irvan Jhon Almer S. Pasaribu Luri Adriani M.Taufan Anantama Michael Vincent Permata Mhardela Popphy Prawati Reviana Revitasari Rosdanelli Hasibuan Sri Eka Cahyani Sri Ulina Surbakti T. Husaini Tri Afrianty Yohannes Tandean Yoshimasa Tomiuchi Yosi Rahman