Syed Neyha Rubab, Zhang Bo, Mwenya Stephen, Aldeen Awsan Shujaa
School of Energy & Environment, Southeast University, No.2 Sipailou, Xuanwu District, Nanjing 210096, China.
Molecules. 2023 Jul 20;28(14):5551. doi: 10.3390/molecules28145551.
Biomass as a renewable energy resource is a major topic on a global scale. Several types of biomass heat treatment methods have been introduced to obtain useful byproducts via pyrolysis. Microwaves are a practical replacement for conventional stoves and ovens to perform pyrolysis of biomass. Their rapid heating rate and user-friendliness make them a good choice for the pyrolysis process over conventional methods. The current study reviewed research articles that used microwaves for the pyrolysis process on different types of biomass. This study primarily provides comprehensive details about the pyrolysis process, especially microwave-assisted pyrolysis (MAP) and its feasibility for treating biomass. A systematic literature review, according to the PRISMA guidelines, was performed to find research articles on biomass treatment using MAP technology. We analyzed various research studies ( = 32), retrieved from different databases, that used MAP for pyrolysis on various types of biomass, and we achieved good results. The main goal of this study was to examine the usefulness of the MAP technique, comparing its effects on distinguished types of biomass. We found MAP's effective parameters, namely, temperature, concentration of microwave absorber, moisture percentage of starting material and flow rate, microwave power and residence time of the initial sweep gas that control the pyrolysis process, and effect quality of byproducts. The catalytic agent in MAP pyrolysis was found to be useful for treating biomass, and that it has great potential to increase (nearly double) the production yield. Although MAP could not be used for all types of materials due to some challenges, it produced good results compared to conventional heating (pyrolysis) methods. We concluded that MAP is an effective method for reducing pyrolysis reaction time and improving the quality of value-added products. Also, MAP eliminates the shredding requirement for biomass and improves heating quality. Therefore, it is a viable method for reducing pyrolysis processing costs and should be applied on a larger scale than lab scale for commercialization.
生物质作为一种可再生能源资源，是全球范围内的一个主要话题。已经引入了几种生物质热处理方法，以通过热解获得有用的副产品。微波是传统炉灶和烤箱的一种实用替代品，可用于生物质的热解。它们的快速加热速率和用户友好性使其成为热解过程中比传统方法更好的选择。当前的研究回顾了使用微波对不同类型生物质进行热解过程的研究文章。本研究主要提供了有关热解过程的全面细节，特别是微波辅助热解（MAP）及其处理生物质的可行性。根据PRISMA指南进行了系统的文献综述，以查找使用MAP技术进行生物质处理的研究文章。我们分析了从不同数据库检索到的各种研究（n = 32），这些研究使用MAP对各种类型的生物质进行热解，并取得了良好的结果。本研究的主要目标是检验MAP技术的有用性，比较其对不同类型生物质的影响。我们发现了控制热解过程的MAP有效参数，即温度、微波吸收剂浓度、起始原料的水分百分比和流速、微波功率以及初始吹扫气体的停留时间，以及副产品的效果质量。发现MAP热解中的催化剂对处理生物质有用，并且它具有大幅提高（几乎翻倍）产量的巨大潜力。尽管由于一些挑战，MAP不能用于所有类型的材料，但与传统加热（热解）方法相比，它产生了良好的结果。我们得出结论，MAP是减少热解反应时间和提高增值产品质量的有效方法。此外，MAP消除了生物质的粉碎要求并提高了加热质量。因此，它是降低热解加工成本的可行方法，并且应该在比实验室规模更大的规模上应用以实现商业化。
