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Recent trends in applications of advanced oxidation processes (AOPs) in bioenergy production: Review
Renewable and Sustainable Energy Reviews ( IF 15.9 ) Pub Date : 2020-01-09 , DOI: 10.1016/j.rser.2019.109669
M.M. M'Arimi , C.A. Mecha , A.K. Kiprop , R. Ramkat

Advanced oxidation processes (AOPs) are powerful methods that were traditionally used for treatment of hazardous materials. Based on their resourcefulness, these methods have recently found important applications in various processes of bioenergy production. Despite the growing interest in the application of AOPs in improving the production of bioenergy, there is no comprehensive documentation on how biofuels production operations have increasingly incorporated these oxidation processes. Therefore, the present study aims at reviewing the current state of the art and future prospects of applying AOPs in biofuels production. The usage of these processes in pre-treatment of lignocellulosic biomass, excess sludge, organic effluents, solid wastes and other substrates for energy production was reviewed. It was noted that wet air oxidation has high potential in pretreatment of lignocellulosic biomass for production of various energy types while sonolysis is most effective in biosolids pretreatment. Ozonolysis and photocatalysis are mostly used to selectively remove the colorants in organic effluents. However electrochemical oxidation has good performance in post-treatment of bioenergy effluents. Documented studies indicate that AOPs can be used to enhance trans-esterification thereby boosting biodiesel production. Moreover, they can be used to improve oil extraction from bio-algae to increase biodiesel yields. Comparative studies involving AOPs and conventional processes are necessary to determine their suitability for these applications. The possibility of using AOPs to upgrade low value biofuels to bio-products of higher value should be part of future investigations. A summarized criterion for evaluating the suitability of different AOPs in the production of biofuels is proposed in this study as a guide for their future usage. The main limitation of applying AOPs in bioenergy sector include high process costs due to costly chemicals and energy requirements. Further studies should investigate the possibility of integration of AOPs with conventional methods aimed at improving the process cost-effectiveness.



中文翻译:

先进氧化工艺(AOP)在生物能源生产中的应用的最新趋势:综述

高级氧化工艺(AOP)是传统上用于处理有害物质的强大方法。基于其实用性,这些方法最近在生物能源生产的各种过程中发现了重要的应用。尽管人们对在改善生物能源生产中应用AOP的兴趣日益浓厚,但没有关于生物燃料生产操作如何越来越多地纳入这些氧化过程的综合文献。因此,本研究旨在回顾在生物燃料生产中应用AOPs的当前技术水平和未来前景。审查了这些工艺在木质纤维素生物质,过量污泥,有机废水,固体废物和其他能源生产基质中的用途。注意到湿空气氧化在木质纤维素生物质的预处理中具有产生各种能量类型的潜力,而声纳分解法在生物固体预处理中最有效。臭氧分解和光催化通常用于选择性去除有机废水中的着色剂。然而,电化学氧化在生物能废水的后处理中具有良好的性能。已有研究表明,AOP可用于增强反式-酯化反应,从而提高了生物柴油的产量。此外,它们可用于改善从生物藻类中提取油以增加生物柴油的产量。涉及AOP和常规工艺的比较研究对于确定它们对这些应用的适用性是必要的。使用AOP将低价值的生物燃料升级为高价值的生物产品的可能性应该成为未来研究的一部分。在这项研究中,提出了用于评估不同AOP在生物燃料生产中的适用性的总结标准,以作为其未来用途的指南。在生物能源领域应用AOP的主要限制包括由于昂贵的化学品和能源需求而导致的高工艺成本。

更新日期:2020-01-09
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