环境修复
过程(计算)
高效能源利用
环境科学
传质
能源消耗
化学
水处理
废物管理
工艺工程
生化工程
材料科学
环境工程
计算机科学
污染
工程类
生物
电气工程
生态学
操作系统
色谱法
作者
Bincheng Xu,Ze Lin,Fengting Li,Tao Tao,Gong Zhang,Ying Wang
标识
DOI:10.1073/pnas.2317702121
摘要
The electro-Fenton process is a state-of-the-art water treatment technology used to remove organic contaminants. However, the low O2 utilization efficiency (OUE, <1%) and high energy consumption remain the biggest obstacles to practical application. Here, we propose a local O2 concentrating (LOC) approach to increase the OUE by over 11-fold compared to the conventional simple O2 diffusion route. Due to the well-designed molecular structure, the LOC approach enables direct extraction of O2 from the bulk solution to the reaction interface; this eliminates the need to pump O2/air to overcome the sluggish O2 mass transfer and results in high Faradaic efficiencies (~50%) even under natural air diffusion conditions. Long-term operation of a flow-through pilot device indicated that the LOC approach saved more than 65% of the electric energy normally consumed in treating actual industrial wastewater, demonstrating the great potential of this system-level design to boost the electro-Fenton process for energy-efficient water remediation.
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