PYROLYSIS OF CASSAVA RHIZOME AND STEM AND THE ANALYSIS OF THE PRODUCTS

• Main Author: Yepetri Sayyid Ayyaami, Sabata
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/87670
• Institution: Institut Teknologi Bandung

Indonesia, as an agricultural country with high cassava productivity, is one of the world's largest cassava producers. This abundant agricultural production generates waste such as cassava stalks and stems, which are typically used only as livestock feed. However, this waste has the potential to serve as an alternative energy source or other renewable chemurgical products. This study aims to convert biomass waste into high-value chemurgical products using pyrolysis, a biomass thermal conversion process that transforms biomass into liquid fuel and/or other value-added chemurgical products. The limited research on cassava stem and core pyrolysis using natural zeolite catalysts, temperature variations, and feedstock size makes this study unique in optimizing waste utilization. This study explores the optimization of cassava stalks and stems waste into high-value chemurgical products through pyrolysis, by incorporating variations in operating conditions, including temperature, feedstock size, and natural zeolite catalyst addition. The experimental results indicate that increasing reactor temperature enhances bio-oil and gas yields but reduces biochar production. Additionally, variations in biomass feedstock size show a trend where larger particle sizes lead to higher biochar yields. The addition of natural zeolite catalysts improves bio-oil quality, as seen in the increased density of bio-oil derived from cassava cores, which is higher than that of cassava stem bio-oil without a catalyst. Given the significant yields of biochar and bio-oil, further development efforts should focus on reducing bio-oil moisture content and with the high fixed carbon content in biochar could be useful as a soil amendment or fuel by increasing the higher heating value (HHV) of biochar, these potentials could become a promising avenue for future research regarding pyrolysis products development and application.