we constructed a novel capacitive deionization carbon/carbon composite electrode-activated carbon/activated carbon fibre (AC/ACF) with low-cost and low energy consumption and high desalination efficacy, and the desalination performance and energy consumption of the electrode under different processes, such as the electrode structure, the operating voltage, and the inlet flow rate, were investigated in comparison with those of the activated carbon (AC) and the activated carbon fibre (ACF) electrodes alone and the best operating parameters of the AC/ACF electrodes were optimized. The results showed that the oxygen-containing functional groups on the surface of AC/ACF increased, and the crystal stability was enhanced; the desalination rate and energy consumption of AC/ACF increased significantly with the increase of voltage, and the optimal operating parameters of AC/ACF were obtained through the entropy value Topsis function: operating voltage of 0.8 V, flow rate of 65 mL·min−1, energy consumption of 0.17 KWh·m−3, and desalination rate of 19.12 %. Further normalized analysis of the cost and energy consumption of the optimized process showed that the adsorption cost (0.11 $·g−1) and energy consumption of the AC/ACF composite were lower (0.45 Wh·gsalt−1), thus the AC/ACF material has the advantages of energy saving, low cost, and excellent desalination performance compared with other composites.

中文翻译：

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活性炭/活性炭纤维电容式去离子复合电极的构建及其在苦咸水淡化中的潜在应用


我们构建了一种低成本、低能耗、高脱盐效的新型电容式去离子碳/碳复合电极活性炭/活性炭纤维 （AC/ACF），并与活性炭 （AC） 和活性炭纤维 （ACF） 进行了比较，研究了电极在不同工艺下的脱盐性能和能耗，如电极结构、工作电压和入口流速单独使用电极和 AC/ACF 电极的最佳操作参数进行了优化。结果表明，AC/ACF表面的含氧官能团增加，晶体稳定性增强;AC/ACF 的脱盐速率和能耗随电压的增加而显著增加，通过熵值 Topsis 函数得到 AC/ACF 的最佳运行参数：工作电压为 0.8 V，流速为 65 mL·min−1，能耗为 0.17 KWh·m−3，脱盐率为 19.12 %。对优化工艺的成本和能耗的进一步归一化分析表明，AC/ACF 复合材料的吸附成本 （0.11 $·g−1） 和能耗较低 （0.45 Wh·gsalt−1），因此 AC/ACF 材料与其他复合材料相比具有节能、成本低、脱盐性能优异等优点。