Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China; Shanghai Engineering Research Center of Multi-source Solid Wastes Co-processing and Energy Utilization, Shanghai 200092, PR China.
Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China; Shanghai Engineering Research Center of Multi-source Solid Wastes Co-processing and Energy Utilization, Shanghai 200092, PR China.
Bioresour Technol. 2021 Aug;333:125196. doi: 10.1016/j.biortech.2021.125196. Epub 2021 Apr 21.
Anaerobic digestion, as an eco-friendly waste treatment technology, is facing the problem of low stability and low product value. Harvesting value-added products beyond methane and removing the inhibitory compounds will unleash new vitality of anaerobic digestion, which need to be achieved by selective separation of certain compounds. Various methods are reviewed in this study for separating valuable products (volatile fatty acids, medium-chain carboxylic acids, lactic acid) and inhibitory substance (ammonia) from the liquid fraction of digestate, including their performance, applicability, corresponding limitations and roadmaps for improvement. In-situ extraction that allows simultaneous production and extraction is seen as promising approach which carries good potential to overcome the barriers for continuous production. The prospects and challenges of the future development are further analyzed based on in-situ extraction and economics.
厌氧消化作为一种环保的废物处理技术，正面临着稳定性低和产品附加值低的问题。除了甲烷之外，收获更多的增值产品并去除抑制性化合物，将为厌氧消化带来新的活力，这需要通过对某些化合物进行选择性分离来实现。本研究综述了各种方法，用于从消化液的液相中分离有价值的产品（挥发性脂肪酸、中链羧酸、乳酸）和抑制物质（氨），包括它们的性能、适用性、相应的局限性和改进路线图。同时生产和提取的原位提取被认为是一种很有前途的方法，具有很好的潜力来克服连续生产的障碍。根据原位提取和经济性，进一步分析了未来发展的前景和挑战。
