Surface modification of adsorbents by dielectric barrier discharge
Surface modification of adsorbents by dielectric barrier discharge
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DOI：
10.1016/s0040-6090(02)00030-5
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发表时间：
2002-03-22
期刊：
影响因子：
2.1
通讯作者：
Kawasaki, J
中科院分区：
文献类型：
--
作者：
Kodama, S;Habaki, H;Kawasaki, J
采用氧气低温等离子体对颗粒活性炭进行处理，以提高其对金属离子的吸附性能。等离子体是在大气压下由介质阻挡放电产生的。对活性炭的表征结果表明，改性后活性炭的比表面积减小，表面酸性官能团浓度增加。通过改变含有金属离子的溶液的初始pH值来检查吸附性。经处理后，土壤对Cu、Zn离子的饱和吸附量明显增加.等离子体处理是提高活性炭吸附性能的有效方法。(C)2002 Elsevier Science B.V.保留所有权利。
Granular activated carbon was treated by oxygen non-thermal plasma to improve its adsorbability for metal ions. The plasma was produced by dielectric barrier discharge under atmospheric pressure. The results of characterization of activated carbon showed that its surface area was decreased, and the concentrations of acidic functional groups at the surface were increased by the treatment. Adsorbability was examined changing the initial pH of the solution containing a metal ion. The saturated adsorption amount of Cu and Zn ion was increased considerably by the treatment. The plasma treatment of activated carbon was concluded as an effective method for improvement of adsorbability. (C) 2002 Elsevier Science B.V. All rights reserved.