Solvothermal liquefaction of orange peels into biocrude: An experimental investigation of biocrude yield and energy compositional dependency on process variables
Publication Type
Journal Article
Publication Date (Issue Year)
2023
Journal Name
Bioresource Technology
Abstract
The efficient valorization of biomass for energy-derived biocrudes is essential for effective waste management. However, the production of biocrudes with high energy and reduced oxygen contents during the liquefaction process requires further insight. Therefore, the impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and bioproduct’s yield enhancement were investigated. The biocrudes obtained were characterized using elemental analysis, GC–MS, FTIR, GPC and TGA to understand the effects of process parameters on the biocrudes’ compositions. An improved HHV (38.18 MJ/kg) and lower O/C ratio (0.11) were obtained at 430 °C, 35 min and 50% ethanol with a significant improvement in the enhancement factor, deoxygenation, and percentage hydrogenation of 2.63, 36.88%, and 77.87%, respectively. The presence of ketones, hydrocarbons, phenolics and aromatics of 23.74, 4.28, 37.20 and 17.81% respectively indicate the potential of the obtained biocrude as renewable energy sources upon further upgrading.
Keywords
Solvothermal liquefaction, orange peels, biocrude, experimental investigation, biocrude yield, energy compositional dependency, process variables
Rsif Scholar Name
Ishaq Kariim
Thematic Area
Minerals, Mining and Materials Engineering
Africa Host University (AHU)
Nelson Mandela African Institution of Science and Technology (NM-AIST), Tanzania
Funding Statement
The supports received from the Partnership for Skills in Applied Sciences, Engineering and Technology-Regional Scholarship and Innovation Fund (PASET-RSIF) with project number P165581, Junior Faculty Development programme under the UM6P/EPFL Excellence in Africa Initiative with grant number 9150 and the Research and Development Program of the Korea Institute of Energy Research (KIER-C3-2474) were highly appreciated.
Recommended Citation
Kariim, I., Ji-Yeon, J., Kazmi, W. W., Swai, H., Lee, I., & Kivevele, T. (2023). Solvothermal liquefaction of orange peels into biocrude: An experimental investigation of biocrude yield and energy compositional dependency on process variables. Bioresource Technology, 391, 129928. https://doi.org/10.1016/j.biortech.2023.129928