海水淡化
地热脱盐
卤水
环境工程
环境科学
反渗透
废水
废物管理
发电
渗透力
高效能源利用
正渗透
工程类
化学
功率(物理)
膜
电气工程
物理
有机化学
量子力学
生物化学
作者
Aishwarya Rani,Shu-Yuan Pan,Suraj Negi,Yu-I Lin
标识
DOI:10.1016/j.watres.2024.121720
摘要
This study designs a novel electroneutralization desalination cell using reaction heat from acidic-alkaline wastewater neutralization to desalinate wastewater and generates chemoelectric power. Several key performance indicators are measured in terms of the energy, environmental and economic aspects of the system, including the ionic flux, the electrical energy produced, the electrical energy consumption for desalination, parasitic losses, overall energy conversion efficiency and desalination performance. The maximum peak power density is ∼31.5 mW/cm2 at 83.5 mA/cm2 and the desalination efficiency is 62% using brine. The overall energy conversion efficiency is ∼81.8% and the desalination followed the zero-order reaction. Assuming a 1.5 million litres per day treatment capacity integrated with reverse osmosis, the system has environmental and economic benefits, with 44.5 kgCO₂eq greenhouse gas emissions per cubic meter of treated brine, and a discounted payback period of 4.2 years. This study demonstrates a pioneering electroneutralization technique for self-sufficient brine valorization and wastewater reclamation.
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