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Capacitive deionization (CDI) is an emerging technology which is being developed as a promising desalination alternative for charged species from salt water, being electrode materials as key drivers for highly efficient process. Here, we describe synthesis of highly porous activated carbons from chicken feathers using pyrolysis followed by chemical activation with potassium hydroxide in a 1:4 ratio to produce sustainable, scalable, and sustainable carbon electrodes for CDI. Poly (vinyl alcohol) (PVA) was used as binder to modify chicken feather activated carbons (CF-AC), which were subsequently crosslinked with glutaraldehyde (GA) to produce CF-AC-PVA-GA polymers through acetylation reaction. This resulted from improving hydrophilicity of CF-AC-PVA-GA polymers to raise the electrodes' resistance. Prepared materials were characterized using scanning electron microscopy, Fourier transform infrared, X-ray diffraction, Brunauer-Emmett-Teller and cyclic voltammetry. Fabricated CDI electrodes were used to investigate their performance for desalination, and exhibited different electrosorption capacity at different applied potentials. Modified electrodes possessed good stability in shear conditions and CDI process was stable and reproducible around 16 electrosorption cycles. Salt removal capacity of the modified electrodes (CF-AC-PVA-GA) was found to be 3.89 mg g⁻¹. The obtained outcomes offer important considerations of ions electrosorption and help advancing CDI system for water treatment and desalination.

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电容去离子 (CDI) 是一项新兴技术，正在开发作为一种有前景的海水淡化替代方案，可用于海水中的带电物质，电极材料是高效过程的关键驱动力。在这里，我们描述了利用热解，然后用氢氧化钾以 1:4 的比例进行化学活化，以鸡羽毛为原料合成高度多孔的活性炭，以生产用于 CDI 的可持续、可扩展和可持续的碳电极。以聚乙烯醇（PVA）为粘合剂对鸡毛活性炭（CF-AC）进行改性，随后与戊二醛（GA）交联，通过乙酰化反应生成CF-AC-PVA-GA聚合物。这是由于提高了 CF-AC-PVA-GA 聚合物的亲水性以提高电极的电阻。使用扫描电子显微镜、傅里叶变换红外、X射线衍射、Brunauer-Emmett-Teller和循环伏安法对制备的材料进行表征。制作的 CDI 电极用于研究其脱盐性能，并在不同的施加电位下表现出不同的电吸附能力。修饰电极在剪切条件下具有良好的稳定性，CDI过程在16个电吸附循环左右稳定且可重复。修饰电极（CF-AC-PVA-GA）的除盐能力为 3.89 mg g 修饰电极在剪切条件下具有良好的稳定性，CDI过程在16个电吸附循环左右稳定且可重复。修饰电极（CF-AC-PVA-GA）的除盐能力为 3.89 mg g 修饰电极在剪切条件下具有良好的稳定性，CDI过程在16个电吸附循环左右稳定且可重复。修饰电极（CF-AC-PVA-GA）的除盐能力为 3.89 mg g⁻¹。所获得的结果为离子电吸附提供了重要的考虑因素，并有助于推进用于水处理和海水淡化的 CDI 系统。