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Idral Amri
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Graduate Program of Chemical Engineering Faculty of Engineering Universitas Riau, Pekanbaru, Indonesia, 28293
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Journal of Bioprocess Chemical and Environmental Engineering Science
Published by Universitas Riau
ISSN : 27221334     EISSN : 27211894     DOI : -
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Journal of Chemical, Bioprocess and Environmental Engineering Science merupakan Open Access Journal yang menerbitkan naskah dengan topik-topik sebagai berikut: 1) Bioprocess Engineering, 2) Catalytic Reaction Engineering Science, 3) Fundamental of Chemical Engineering and Applied Industry, 4) Industrial Chemical Engineering, 5) Material and Engineering Sciences, 6) Process and Control Engineering, 7) Energy Sciences and Technology, 8) Polymer, Oleo and Petrochemical Technology, 9) Membrane Sciences and Technology, 10) Separation and Purification Technology, 11) Water/Waste Water treatment, 12) Environmental and Safety Technology, 13) Food Processing and Engineering Sciences
Arjuna Subject : Teknik Kimia (semua kategori) - Fluid Flow and Transfer Processes
Articles 52 Documents
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Optimasi Proses pirolisis dari Kulit Kayu Akasia Crassicarpa Menjadi Bio-Char menggunakan Metode Respon Surface Methodologi Central Composite Design Darmiyati, Siti; Bahri, Syaiful; Sunarno, Sunarno
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 6 No 2 (2025): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.6.2.122-131

Abstract

The problem of fossil energy crisis and the increasing carbon emissions have encouraged the search for environmentally friendly alternative energy sources, one of which is through the utilization of biomass into solid fuels such as bio-char. This study aims to optimize the pyrolysis process conditions to produce high-quality bio-char from Acacia crassicarpa bark, a lignocellulosic waste from the forestry industry. The pyrolysis process was carried out in a batch reactor with variations in temperature (400–500°C), residence time (30–60 minutes), and NiMo/NZA catalyst concentration (2–6%) as independent variables. Optimization was carried out using the Response Surface Methodology approach with a Central Composite Design experimental design to obtain the optimum conditions. The results showed that the optimum conditions were obtained at a pyrolysis temperature of 400°C, residence time of 30 minutes, and catalyst concentration of 2%, resulting in a bio-char yield of 33.8% with a desirability value of 0.876. Meanwhile, the highest calorific value of 28 MJ/kg was achieved at the same temperature with a residence time of 90 minutes. This value exceeds the minimum standard for solid fuels according to the International Biochar Initiative and the European Biochar Certificate, which are generally in the range of >20–25 MJ/kg. Thus, the resulting bio-char not only has potential as an alternative energy source but also meets quality standards as an efficient and sustainable solid fuel.
Optimasi Proses Pengeringan Vegetable Noodle Menggunakan Tray Dryer Infrared Yulia, Indri; Evelyn; Zahrina, Ida
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 6 No 2 (2025): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.6.2.132-142

Abstract

Noodles are one of the most popular processed foods due to their convenience, affordability, and ease of preparation. However, conventional noodles are primarily made from wheat flour, which lacks dietary fiber and micronutrients. Therefore, this study aims to develop a more nutritious vegetable-based noodle by incorporating local ingredients such as sago flour and pakcoy. The objective was to evaluate the effect of flour ratio (wheat:sago), drying temperature, and time on the chemical and microstructural properties of pakcoy-based dried noodles using infrared tray drying. The experimental design applied Response Surface Methodology (RSM) with Central Composite Design (CCD). Responses measured included moisture content, protein content, carbohydrate content, FTIR spectral analysis, and surface morphology via SEM. The optimal condition was achieved at a flour ratio of 85:15, drying temperature of 80°C, and 2 hours duration, resulting in 9.66% moisture, 11.79% protein, and 76.41% carbohydrates. FTIR analysis confirmed the preservation of key functional groups of carbohydrates and proteins, while SEM analysis revealed a more compact and uniform surface structure in noodles containing pakcoy. This study recommends the application of infrared drying technology in vegetable noodle processing to improve nutritional value and structural integrity

Page 6 of 6 | Total Record : 52

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