Yang Kai, Qin Mohan
Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Engineering Hall, 1415 Engineering Drive, Madison, WI 53706, USA.
Membranes (Basel). 2021 Jun 30;11(7):494. doi: 10.3390/membranes11070494.
Electrochemical processes are considered promising technologies for ammonia recovery from wastewater. In electrochemical processes, cation exchange membrane (CEM), which is applied to separate compartments, plays a crucial role in the separation of ammonium nitrogen from wastewater. Here we provide a comprehensive review on the application of CEM in electrochemical systems for ammonia recovery from wastewater. Four kinds of electrochemical systems, including bioelectrochemical systems, electrochemical stripping, membrane electrosorption, and electrodialysis, are introduced. Then we discuss the role CEM plays in these processes for ammonia recovery from wastewater. In addition, we highlight the key performance metrics related to ammonia recovery and properties of CEM membrane. The limitations and key challenges of using CEM for ammonia recovery are also identified and discussed.
电化学工艺被认为是从废水中回收氨的有前景的技术。在电化学工艺中，用于分隔隔室的阳离子交换膜（CEM）在从废水中分离铵态氮方面起着关键作用。在此，我们对阳离子交换膜在从废水中回收氨的电化学系统中的应用进行全面综述。介绍了四种电化学系统，包括生物电化学系统、电化学汽提、膜电吸附和电渗析。然后我们讨论了阳离子交换膜在这些从废水中回收氨的过程中所起的作用。此外，我们强调了与氨回收相关的关键性能指标以及阳离子交换膜的性能。还确定并讨论了使用阳离子交换膜进行氨回收的局限性和关键挑战。
