Abstract
The conversion of biomass into hydrogen-rich syngas has been getting attention recently as it has potential sustainability benefits of agricultural residues. In this study, gasification of empty fruit bunch (EFB) was performed using a various calcined Malaysian dolomite catalyst which denoted as P1, P2 and P3. The physicochemical properties of the catalysts were examined using XRF, XRD, BET and SEM. The effect of various catalyst to biomass (C/B) ratio (varied in the range of 0.05 to 0.3 in an increment of 0.05) of P1, P2 and P3 catalyst in EFB gasification was evaluated at gasifier temperature of 850 oC. The gas produced was analyzed by GC. The effect of various C/B ratio on tar conversion was also examined. The result showed, with lower impurities in calcined dolomites and high content of active sites (CaO-MgO) improve the characteristics of P1 and P2 in crystalline structure contributes to a significant reduction in tar cracking (~ 78 % and 75 %, respectively) and higher H2 yield (32.25 mg H2/g EFB).
Highlights
Syngas can be obtained from various sources, such as coal, natural gas, and petroleum distillate through thermochemical processes (Shen et al, 2018)
The calculated tar reduction (%) relative to that obtained with zero catalyst for P1, P2, and P3 were ∼78, 75, and 70%, respectively (Mohammed et al, 2011)
Calcined dolomites denoted as PI, P2, and P3 catalysts are an effective catalyst for reducing tar in empty fruit bunch (EFB) gasification for syngas production
Summary
Syngas can be obtained from various sources, such as coal, natural gas, and petroleum distillate through thermochemical processes (Shen et al, 2018). Syngas technology is a well-known alternative process to produce valuable chemical products. Hydrogen is a clean and efficient energy source, known as a safe source because it can be stored as a gas or a liquid, and it has good properties in fueling automobile engines (Mohammed et al, 2011). Dependence on fossil fuels as the main source has led to price instability, excessive carbon dioxide emissions, and unprecedented global warming (Li and Chen, 2018). The production of hydrogen accomplish the growing demand energy and is economically feasible and a sustainable development of the world by utilizing the same infrastructure without any major modification to replace fossil fuel (Shahbaz et al, 2019)
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