English  |  正體中文  |  简体中文  |  Items with full text/Total items : 17775/20116 (88%)
Visitors : 9507146      Online Users : 309
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/310902800/27914

    標題: Removal of monoethanolamine and phosphate from thin-film transistor liquid crystal display (TFT-LCD) wastewater by the fluidized-bed Fenton process
    作者: Su, Chia-Chi
    Chen, Chia-Min
    Anotai, Jin
    Lu, Ming-Chun
    貢獻者: 環境資源管理系
    關鍵字: Fluidized-Bed Reactor
    Fenton Process
    日期: 2013-04
    上傳時間: 2014-05-26 10:48:49 (UTC+8)
    出版者: Elsevier Science Sa
    摘要: Synthetic wastewater containing monoethanolamine (MEA) and phosphate, which was generated during the cleaning and etching processes for thin-film transistor liquid crystal displays (TFT-LCDs) was treated using a novel process. Degradation of MEA was studied and compared using the Fenton and fluidized-bed Fenton processes. Comparison results show that the Fe2+ concentration was an important factor for MEA and chemical oxygen demand (COD) removal in the fluidized-bed Fenton process. The degradation of MEA followed pseudo-first-order reaction kinetics. The MEA, COD and total organic carbon (TOC) removal efficiencies by the fluidized-bed Fenton process after 60 min were 15-26% higher than those by the Fenton process. The phosphate removal rate followed a first-order reaction. Phosphate removal was optimized by selecting sand grains sized (0.24-0.5 mm) and a molar ratio of Fe2+/P of 1.3 at pH 7. In the two stages, optimized conditions were Fe2+/P = 1.3 at pH 7 using 100 g SiO2 for phosphate removal, and 3 mM Fe2+ and 50 mM H2O2 at pH 3 for MEA removal; phosphate removal efficiency was 45% and MEA removal efficiency was 76%. (C) 2012 Published by Elsevier B.V.
    關聯: Chemical Engineering Journal, v.222, pp.128-135
    Appears in Collections:[環境資源管理系(所)] 期刊論文

    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