Renewable and Sustainable Energy Reviews ( IF 15.9 ) Pub Date : 2020-08-22 , DOI: 10.1016/j.rser.2020.110283 Qizi Fu , Dongbo Wang , Xiaoming Li , Qi Yang , Qiuxiang Xu , Bing-Jie Ni , Qilin Wang , Xuran Liu
Hydrogen production from waste activated sludge (WAS) was widely considered and intensively investigated as a promising technology to recover energy from wastewater treatment plants. To date, no efforts have been made on either systematic summarization or critical thinking of the application niche of hydrogen production from WAS treatment. It is therefore time to evaluate whether and how to recover hydrogen in a future paradigm of WAS treatment. In this critical review, the principles and potentials, microorganisms, possible technologies, and process parameters of hydrogen generation were analyzed. Microbial electrolysis cell shows high theoretical hydrogen yield and could utilize a variety of organic compounds as substrates, which is regarded as a prospective technology for hydrogen production. However, the poor organics utilization and rapid consumptions of produced hydrogen hindered hydrogen recovery from WAS. Based on the analysis of the current state of the literatures, the opportunities and challenges of hydrogen production from WAS are rethought, the detailed knowledge gaps and perspective of hydrogen production from WAS were discussed, and the probable solutions of hydrogen recovery from WAS treatment are figured out. To guide the application and development of hydrogen recovery, a more promising avenue through rational integration of the available technologies to form a hybrid process is finally proposed. The integrated operational paradigm of WWTPs could achieve substantial technical, environmental and economic benefits. In addition, how this hybrid process works is illustrated, the challenges of this hybrid process and future efforts to be made in the future are put forward.
中文翻译:
从废活性污泥制氢:原理,挑战和观点
废物活性污泥(WAS)产生的氢气被广泛考虑并进行了深入研究,作为从废水处理厂回收能量的有前途的技术。迄今为止,尚未对WAS处理制氢的应用领域进行系统总结或批判性思考。因此,现在应该评估在WAS处理的未来范式中是否以及如何回收氢。在这次重要的综述中,分析了制氢的原理和潜力,微生物,可能的技术以及制氢工艺参数。微生物电解池具有很高的理论产氢量,可以利用多种有机化合物作为底物,被认为是产氢的一种有望技术。然而,不良的有机物利用率和快速产生的氢气消耗阻碍了WAS的氢气回收。在对现有文献进行分析的基础上,重新思考了WAS制氢的机遇与挑战,讨论了WAS制氢的详细知识空白和观点,并提出了WAS处理制氢的可能解决方案。出来。为了指导氢回收的应用和发展,最后提出了通过合理整合现有技术以形成混合工艺的更有希望的途径。污水处理厂的综合运作模式可以取得可观的技术,环境和经济效益。此外,还说明了此混合过程的工作原理,