【作者】 王岩；

【导师】 张世润；

【作者基本信息】 东北林业大学 ， 林产化学加工工程， 2001， 硕士

【摘要】 本论文研究课题为黑龙江省青年基金资助项目，内容主要涉及两个方面，即光催化剂改性和活性炭再生。在光催化剂改性研究中，通过光化学沉积法制得了高催化活性光催化剂Ag-TiO₂，以其为催化剂对活性炭的再生比原料TiO₂更有效。在对活性炭再生的研究中，首次明确提出活性炭光再生概念，并对其机理进行了探讨，具体内容为：活性炭光再生是指利用一定波长范围的光，在某种催化剂的存在下，通过光催化氧化反应使吸附有一种或多种有机物吸附质的活性炭吸附性能得到恢复的活性炭再生方法；光再生过程中吸附质要经历从活性炭内部向外部扩散及被光催化氧化的过程，再生初期有机物的光催化氧化是光再生的速率限制步骤，之后吸附质在吸附剂中的外扩散是光再生的速率限制步骤；对于悬浆体系活性炭光再生，吸附质有机物的光催化氧化在再生液中进行，对于光催化剂负载体系，光催化氧化在含有光催化剂的吸附剂近表面层进行，光催化剂负载体系的光再生效果比悬浆体系更好。 在本论文研究的实验条件下，以XXAC为吸附剂，以Ag-TiO₂为光催化剂并采用光催化剂负载形式，50℃下光照72h的再生效果最好，吸附回复率最高，为81％。更多还原

【Abstract】 The paper is assisted by the Youth Fund of Hei Longjiang Province. Two aspects, improvement of photo-catalyst and regeneration of activated carbon were involed in the paper. In the study of improvement of photo-catalyst, high-activated photo-catalyst Ag-TiC)2 which was more effective than material Ti02 were made with the photochemical precipitation. In the study of regeneration of activated carbon, the concept of photo-regeneration of activated carbon was put forward first and the mechanism was discussed. The photo-regeneration is the method which utilizes the photo-catalytic oxidation to recover the adsorption of activated carbon which adsorbed one or more organic chemicals. During the process of photo-regeneration the adsorbates experienced the diffusion from inner to the outer part of activated carbon and the process of photo-catalytic oxidation. At the beginning of the photo-regeneration, the photo-catalytic oxidation of adsorbates if the key step limiting photo-regeneration rate, and then the outer diffusion of adsorbates is the key step. To the photo-catalyst diffusion system, the photo-catalytic oxidation was taken place in the regeneration-fluid. To the photo-catalyst adhesion system, the photo-catalytic oxidation was taken place in the near surface including photo-catalyst of adsorbent. The regeneration effect of the latter was better than the former.更多还原