Anwar, Rangga Febry (2025) Peningkatan Kualitas Bio Oil dari Jerami padi dengan Kombinasi Proses Co-Pirolisis dan Co-katalis Fe/Al2O2. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
This study aims to determine the improvement in bio-oil quality through the addition of catalysts and the ratio of PP and LDPE plastics. The bio-oil quality characteristics, including calorific value and yield, are in accordance with the American Society for Testing and Materials (ASTM) standards. Bio-oil is a complex organic liquid containing various biomass-derived compounds and has a high water content of around 20-30 wt%, which results in corrosive properties and instability, and a relatively low calorific value compared to conventional fuels. Rice straw, as a lignocellulosic biomass, is composed of cellulose, hemicellulose, and lignin, making it potentially useful as a bioenergy source. Furthermore, straw has a low density (70-80 kg/m3 at a moisture content of 15-18%), with a primary composition of 39.04% cellulose, 20.91% hemicellulose, and 5.71% lignin. Several conditions/variables were determined in this study: a rice straw mass of 50 grams, a pyrolysis temperature of 500°C, and a process time of 20 minutes. The conditions/variables were the PP:LDPE plastic ratio (0:50; 12.5:37.5; 25:25; 37.5:12.5; and 50:0 grams) and the Fe/Al2O3 concentration (0, 5, 10, 15, and 20 (wt%)). The types of analysis used in this study were: GCMS analysis, yield, phenol content, calorific value, and density. The results showed that varying the catalyst weight percentage significantly affected bio-oil yield and acid content, with increasing the catalyst amount resulting in higher yields and lower acetic acid content. In this study, optimum conditions were achieved using a 20% catalyst, with a bio-oil yield of 30.56% and an acid content of 1.11%. The addition of plastic to rice straw pyrolysis also increased the calorific value and affected the viscosity, with LDPE producing a viscosity that met ASTM standards of 2.511. Overall, the best conditions were achieved using a 20% catalyst with a PP/LDPE plastic ratio of 0:50 grams.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | T Technology > TP Chemical technology > TP155 Chemical engineering | ||||||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||||||
| Depositing User: | Rangga Febry Anwar | ||||||||||||
| Date Deposited: | 29 May 2026 06:38 | ||||||||||||
| Last Modified: | 29 May 2026 06:38 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/52557 |
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