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Electro-desalination of saline solutions by multiwall carbon nanotube electrodes
Journal of Saudi Chemical Society ( IF 5.8 ) Pub Date : 2021-08-18 , DOI: 10.1016/j.jscs.2021.101328
Nasser Zouli 1
Affiliation  

Electrodes of multiwall carbon nanotube (MWCNT) with polytetrafluoroethylene (PTFE) binding were prepared for NaCl removal from water in the electrosorption system. SEM, XRD and BET analysis were used to characterize the prepared electrodes. The optimum electrosorption parameters (electrosorption temperature, NaCl concentration, electrosorption time, and potential) were studied. The maximum electrosorption capacity (15.64 mg/g) was obtained at −1.0 V, 100 min, and 30 °C. The electrosorption capacity of electrodes decreased from 15.64 mg/g to 6.15 mg/g with the temperature rise from 30 to 50 °C. Also, the kinetics of electrosorption NaCl by Electrodes was investigated by pseudo-first-order and pseudo-second-order. The results indicated that the electrosorption data will fit with the pseudo-first-order model indicating the physio-electrosorption of NaCl by Electrodes with activation energy was 19.45 kJ mol−1. The regeneration result indicated the exceptional and stable reusability of MWCNT/PTFE in the NaCl electrosorption system.



中文翻译:

多壁碳纳米管电极对盐溶液的电脱盐

制备了具有聚四氟乙烯 (PTFE) 结合的多壁碳纳米管 (MWCNT) 电极,用于在电吸附系统中从水中去除 NaCl。SEM、XRD 和 BET 分析用于表征制备的电极。研究了最佳电吸附参数(电吸附温度、NaCl 浓度、电吸附时间和电位)。在 -1.0 V、100 分钟和 30 °C 下获得最大电吸附容量 (15.64 mg/g)。随着温度从 30°C 升高到 50°C,电极的电吸附容量从 15.64 mg/g 下降到 6.15 mg/g。此外,通过拟一级和拟二级研究了电极电吸附氯化钠的动力学。-1。再生结果表明 MWCNT/PTFE 在 NaCl 电吸附系统中具有出色且稳定的可重复使用性。

更新日期:2021-09-08
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