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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Nitrate removal from water using functionalized carbon nanotube sheets
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Nitrate removal from water using functionalized carbon nanotube sheets

机译：从水中硝酸盐去除使用功能化碳纳米管表

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摘要

Carbon nanotube (CNT) sheets were synthesized via chemical vapor deposition of cyclohexanol and ferrocene in nitrogen atmosphere at 750 C, functionalized using concentrated nitric acid and liquid ammonia and employed as adsorbents to study their nitrate adsorption characteristics. The results demonstrated that functionalization v/ith nitrogen-containing groups improves nitrate adsorption capacity of the oxidized CNT sheets, significantly. Various isotherms and kinetic models were applied to fit the experimental data. Effects of contact time, initial nitrate concentration and adsorbent dosage were also investigated. Regeneration performance for the first time was also studied. For comparison, a similar study was performed with commercial activated carbon (AC). It was found out that the functionalized CNT sheets with higher nitrate adsorption capacity, shorter equilibrium time and better regeneration performance than AC, can be considered as potential adsorbents for nitrate removal from water in domestic applications.
机译：碳纳米管(CNT)表是通过合成的化学汽相淀积和环己醇二茂铁在750 C氮气氛,使用浓硝酸和功能化液氨和用作吸附剂研究硝酸吸附特征。结果表明,功能化v / i提高硝酸盐氮含量组吸附容量的氧化问表,显著。模型应用于符合实验数据。接触时间的影响,初始硝酸盐浓度和吸附剂用量也调查。第一次也进行了研究。与商业执行类似的研究活性炭(AC)。硝酸与高功能化问表吸附能力,平衡时间短比交流,更好的再生性能硝酸视为潜在的吸附剂在国内应用程序从水中去除。

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