| Title | Electroneutralization desalination with spontaneous chemoelectric power generation |
|---|---|
| ID_Doc | 25931 |
| Authors | Rani, A; Pan, SY; Negi, S; Lin, Y |
| Title | Electroneutralization desalination with spontaneous chemoelectric power generation |
| Year | 2024 |
| Published | |
| Abstract | 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/cm 2 at 83.5 mA/cm 2 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 kg-CO 2eq 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 selfsufficient brine valorization and wastewater reclamation. |
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