2009 Volume 3 Issue 11
Article Contents
Abstract
References
Previous Article Next Article

Fang Yuemei. Study on properties and coagu-flocculation mechanism of green flocculant PAS[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 2021-2025.
Citation: Fang Yuemei. Study on properties and coagu-flocculation mechanism of green flocculant PAS[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 2021-2025.
shu

Study on properties and coagu-flocculation mechanism of green flocculant PAS

  • 1.

    Environmental Science and Engineering College,Huangshi Institute of Technology, Huangshi 435003,China

  • Received Date: 08/03/2009
    Accepted Date: 11/02/2009
    Fund Project:
  • A green flocculant PAS is prepared by adding Ti metal-salt into polysilicic acid. Acidic PAS is more efficient than alkaline PAS. The best molar ratio is nTi/nSi=0.3. The optimum conditions are that the appropriate pH value is from 6 to 8, the adding amount of PAS is 10 mg/L by calculating the concentration of Ti4+in treating Yangtze River water. After treatment, UV254removal efficiency is more than 61.7%, and the turbidity-removal efficiency is more than 99%. The coagulating property of PAS is higher than polyaluminum chloride’s and ploysilicatealuminum chloride’s. The floccule is big and closegrained, having high sedimentation efficiency. Water drained is clearer, having zero content of Al. Ti is an environment-friendly green metal. PAS, an environment-friendly green flocculant, can be used as special flocculant for treating drinking water. The shapes and structure of sample flocs was investigated and analyzed using microscopy and FTIR．The results show that PAS have favorable ability of complexation, bridging and netting．
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索
Export Citation
PDF
XML

Article Metrics

Article views(2924) PDF downloads(1329) Cited by(0)

Access History

Study on properties and coagu-flocculation mechanism of green flocculant PAS

  • Received Date: 08/03/2009
  • Accepted Date: 11/02/2009
Fund Project:

Abstract: A green flocculant PAS is prepared by adding Ti metal-salt into polysilicic acid. Acidic PAS is more efficient than alkaline PAS. The best molar ratio is nTi/nSi=0.3. The optimum conditions are that the appropriate pH value is from 6 to 8, the adding amount of PAS is 10 mg/L by calculating the concentration of Ti4+in treating Yangtze River water. After treatment, UV254removal efficiency is more than 61.7%, and the turbidity-removal efficiency is more than 99%. The coagulating property of PAS is higher than polyaluminum chloride’s and ploysilicatealuminum chloride’s. The floccule is big and closegrained, having high sedimentation efficiency. Water drained is clearer, having zero content of Al. Ti is an environment-friendly green metal. PAS, an environment-friendly green flocculant, can be used as special flocculant for treating drinking water. The shapes and structure of sample flocs was investigated and analyzed using microscopy and FTIR．The results show that PAS have favorable ability of complexation, bridging and netting．

    HTML

Reference (0)

Catalog

  • HTML

/

DownLoad:  Full-Size Img  PowerPoint
Return

All rights reserved: Reesearch Center for Eco-Environmental Sciences,Chinese Academy of Sciences Copyright © 1997-2016

Address:  Postcode: 100085 Phone: 010-62941074 E-mail: cjee@rcees.ac.cn

Supported by: Beijing Renhe Information Technology Co. Ltd  Technical support: info@rhhz.net