English  |  正體中文  |  简体中文  |  Items with full text/Total items : 17756/20057 (89%)
Visitors : 7875033      Online Users : 532
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/6175

    標題: 利用光觸媒處理難分解有機污染物之研究
    A study on the treatment of refractory organics by using photocatalyst
    作者: 江嘉瑞
    chiaray chiang
    貢獻者: 林秀雄
    關鍵字: 溶膠凝膠法
    日期: 2005
    上傳時間: 2008-10-31 16:15:58 (UTC+8)
    摘要: 本研究針對TiO2光觸媒進行性質上的改良。本研究目的有二: 首先,以溶膠-凝膠法製備二氧化鈦及磷灰石。其次,利用紫外光照射二氧化鈦可產生強力氧化作用,以及磷灰石與二氧化鈦相容性佳,磷灰石對有機物可吸附之特性將二者結合,以乙酸為反應物,使用不同比例二氧化鈦/磷灰石所合成之觸媒,由乙酸去除率篩選最適之TiO2/Apatiet光觸媒及最適之觸媒添加量。
    This study aimed at the improvement of TiO2 photocatalyst. There are two objectives in this work: First, via sol-gel method, the TiO2 and apatite were synthesized respectively. Second, considering the great oxidation capability of TiO2 and the great organics adsorption capacity of apatite, the TiO2 and apatite were blended to have the best of both worlds. Note that TiO2 and apatite are compatible. The acetic acid was choosen as the reactant because it is a refractory organic and is stable even under the irradiation of UV ray. TiO2/apatite catalysts with various ratios were prepared and investigated. It is for screening for the optimum ratio of TiO2/apatite. Besides, the optimum catalyst loading was also determined.
    According to XRD spectra analysis, the TiO2 prepared by using TiCl4 is predominantly the anatase phase. It was found that amount of residual Cl- would affect powder size and specific surface area of TiO2. Alternatively, adding appropriate amount of polypropylene (PP) could increase specific surface area of apatite. The optimum apatite/PP ratio is 1:1. In addition, results of acetic acid reaction showed that the optimum ratio of TiO2/apatite is 1:1, whilst the optimum catalyst loading is 0.75g/L. Under the most efficient condition, the COD removal of 200 ppm acetic acid solution could attain 41.6% after 3hrs reaction.
    關聯: 校內校外均不公開
    Appears in Collections:[環境工程與科學系(所)] 博碩士論文

    Files in This Item:

    File Description SizeFormat

    All items in CNU IR are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback