Abstract：
High value-added products from organic waste fermentation have garnered increasing concern in modern society. VFAs are short-chain fatty acids, produced as intermediate products during the anaerobic fermentation of organic matter. VFAs can serve as an essential organic carbon source to produce substitutable fuels, microbial fats and oils, and synthetic biodegradable plastics et al. Extracting VFAs from the fermentation broths is a challenging task as the composition of suspensions is rather complex. In this paper, a comprehensive review of methods for VFAs production, extraction and separation are provided. Firstly, the methods to enhance VFAs production and significant operating parameters are briefly reviewed. Secondly, the evaluation and detailed discussion of various VFAs extraction and separation technologies, including membrane separation, complex extraction, and adsorption methods, are presented, highlighting their specific advantages and limitations. Finally, the challenges encountered by different separation technologies and novel approaches to enhance process performance are highlighted, providing theoretical guidance for recycling VFAs from organic wastes efficiently.
摘要：
来自有机废物发酵的高附加值产品在现代社会已引起越来越多的关注。VFA是短链脂肪酸,在有机物的厌氧发酵过程中作为中间产物产生。VFA可以作为生产可替代燃料的重要有机碳源，微生物脂肪和油，和合成生物降解塑料等。从发酵液中提取VFA是一项具有挑战性的任务,因为悬浮液的组成相当复杂。在本文中,全面审查VFA生产方法，提供提取和分离。首先,简要回顾了提高VFA产量和重要操作参数的方法。其次,各种VFA提取和分离技术的评估和详细讨论，包括膜分离，复杂的提取，和吸附方法，被呈现，强调它们的具体优势和局限性。最后,强调了不同分离技术和提高工艺性能的新方法所遇到的挑战，为有效回收有机废弃物中的VFAs提供理论指导。
