Activated carbon (AC) powder was fabricated from locally available date palm leaflets by using sodium hydroxide activation and utilized as electrodes in flow-between capacitive deionization (CDI) system. The surface physical, chemical and electrochemical properties of the fabricated AC powder were analysed and presented. The fabricated AC powder was used as electrodes in CDI system to investigate the desalination performance under the influence of various salt ions concentrations as well as applied potentials. The results were found that the salt adsorption capacity was limited by the amount of mesopores presented in the AC electrodes. The maximum salt adsorption capacity achieved with the fabricated AC electrodes was 5.38 mg/g for 100 ppm of NaCl solution. Moreover, the removal and electro-degradation of methylene blue (MB) was also conducted by CDI technique and 85% of dye removal/degradation was achieved within 130 min of process duration. Post surface examination of the used AC electrodes confirmed the electrosorption and electro-degradation of MB molecules during MB removal and degradation process. The results suggest that AC synthesized from Omani date palm leaflets could be a promising material for waste water treatment as well as an effective way for environmental remediation using simple CDI system.

活性炭（AC）粉末是通过使用氢氧化钠活化剂从当地可获得的枣椰子小叶制成的，并用作电容性去离子（CDI）系统之间的电极。分析并介绍了所制备的交流粉末的表面物理，化学和电化学性能。所制备的交流粉末用作CDI系统中的电极，以研究在各种盐离子浓度和施加电势的影响下的脱盐性能。结果发现，盐吸附能力受交流电极中介孔数量的限制。对于100ppm的NaCl溶液，所制造的AC电极实现的最大盐吸附能力为5.38mg / g。此外，还通过CDI技术进行了亚甲基蓝（MB）的去除和电降解，在130分钟的处理时间内实现了85％的染料去除/降解。后用过的交流电极的表面检查证实了在MB去除和降解过程中MB分子的电吸附和电降解。结果表明，由阿曼枣椰叶合成的AC可能是一种有前途的废水处理材料，并且是使用简单CDI系统进行环境修复的有效方法。