[1]任建坤,陈乐,石倩,等.气-固流化床光催化再生活性炭的研究[J].南京师大学报(自然科学版),2012,35(02):56-60.
　Ren Jiankun,Chen Le,Shi Qian,et al.Photocatalytic Regeneration of Exausted Activated Carbon With Gas-Solid Fluidized-Bed Reactor[J].Journal of Nanjing Normal University(Natural Science Edition),2012,35(02):56-60.
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气-固流化床光催化再生活性炭的研究()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第35卷
期数:
2012年02期
页码:
56-60
栏目:
化学
出版日期:
2012-06-20

文章信息/Info

Title:
Photocatalytic Regeneration of Exausted Activated Carbon With Gas-Solid Fluidized-Bed Reactor
作者:
任建坤;陈乐;石倩;王玉萍;彭盘英;
南京师范大学化学与材料科学学院，江苏南京210097
Author(s):
Ren Jiankun; Chen Le; Shi Qian; Wang Yuping; Peng Panying
School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210097,China
关键词:
S － TiO2 ; 气固流化床; 光催化再生; 再生机理
Keywords:
S － TiO2 ; gas-solid fluidized-bed; photocatalytic regeneration; regeneration mechanism
分类号:
O643.36
摘要:
采用凝胶溶胶法制备了负载S-TiO2的改性活性炭,考察了气固流化床光催化再生饱和吸附亚甲蓝的活性炭的可行性.研究了改性条件、再生时间、催化剂活性和再生次数对再生效果的影响.结果表明,S-TiO2负载量为6.5%,煅烧温度为450℃的改性活性炭经250 W汞灯光照12 h后再生率可以达到65.8%.在紫外光照下,改性活性炭表面的亚甲蓝降解中心与活性炭内部亚甲蓝的浓度差是气固流化床光催化再生活性炭的主要驱动力.
Abstract:
The modified activated carbon loaded with S － TiO2 was synthesized by sol-gel method，and it was a kind of new activated carbon absorbent． The technical feasibility of photocatalytic regeneration for activated carbon saturated with MB with gas-solid fluidized-bed reactor was investigated by using S － TiO2 as photocatalysts． The factors affecting the regeneration efficiency of the activated carbon were investigated，including modifying conditions，regeneration times，photocatalyst modification，and adsorption-regeneration cycles． Based on the regeneration rate of activated carbon under different conditions，the regeneration mechanism was discussed． It was possible to regenerate the activated carbon through photocatalytic oxidation with gas-solid fluidized-bed reactor． The MB adsorption capacity of activated carbon calcinated at 450℃ with 6. 5% ( S － TiO2 ) loading could be recovered by 65. 8%，when irradiated by 250 W UV lamp for 12 h． The difference of MB concentration between interior and exterior of activated carbon was the main driving force for photocatalytic regeneration．

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备注/Memo

备注/Memo:
基金项目: 江苏省自然科学基金( BK2009409) 、南京师范大学“211 工程”三期、江苏高校优势学科建设工程资助项目重点学科建设项目．
通讯联系人: 王玉萍，教授，研究方向: 纳米半导体光催化材料及其在环境和能源中的应用． E-mail: wangyuping@ njnu． edu． cn
更新日期/Last Update: 2013-03-11