CIESC Journal ›› 2011, Vol. 62 ›› Issue (S2): 102-106.DOI: 10.3969/j.issn.0438-1157.2011.z2.017

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Electrochemical regeneration of active carbon fiber loaded with SCN- in diluted solutions

CHEN Rong1,ZHENG Xianglong2,HU Xi’en2   

  • Received:2011-04-28 Online:2011-12-20 Published:2011-12-20

活性炭纤维吸附稀溶液中SCN-的电化学再生

陈榕1,郑翔龙2,胡熙恩2   

  1. 1海南医学院药学院;2清华大学核能与新能源技术研究院
  • 通讯作者: 陈榕

Abstract: The effectiveness of electrochemical regeneration of active carbon fiber (ACF) loaded with SCN-, was assessed by adsorption capacity of regenerated ACF achieved in the re-adsorption experiment. The influences of regeneration parameters such as regeneration time, adsorbate concentration and regeneration circle times were investigated. Adsorption capacity of regenerated ACF could reach 3 times of fresh ACF, under the optimum conditions 0.8 mA in 0.5 mol·L-1 H2SO4 solution for 2 h. No significant declination of ACF adsorption capacity was observed after five-times continuous adsorption-regeneration cycles, and no significant damage occurred on the surface of ACF after regeneration.

Key words: active carbon fiber, SCN-, electrochemical regeneration

摘要: 为了研究电化学再生活性炭纤维(ACF)的效果,以SCN-为模型物,通过测量再生后活性炭纤维对SCN-的吸附容量的大小,考察了时间、吸附质浓度、再生循环次数等再生过程中的影响因素。结果表明,适宜的再生条件为0.8 mA正极化2 h,0.5 mol·L-1的硫酸溶液,能使再生后ACF的吸附容量提高为原始ACF的3倍。5次电化学再生循环后,ACF的吸附容量没有明显降低,再生后ACF纤维表面也没有明显损伤。

关键词: 活性炭纤维, SCN-, 电化学再生

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