Skip to main content

The crystallization of arsenate-contaminated iron hydroxide solids at high pH

Buy Article:

$30.00 plus tax (Refund Policy)


A potential alternative technology for wastewater treatment streams involves coprecipitation with colloidal iron hydroxide followed by aging at elevated temperatures and high pH to produce crystalline iron oxides. The resultant crystalline oxides, in addition to having reduced sludge volume, may chemically/physically incorporate metal ions and/or metalloid oxyanions. The increased stability of the crystalline solids may be advantageous in reducing the rate of release of the contaminants to groundwater. The rate of transformation of iron hydroxide model wastewater treatment solids contaminated with arsenate into crystalline products was measured at 60 and 70°C. The rate of transformation was found to be described by either a solid-state reaction equation for powdered compacts or a zero-order reaction controlled by desorption. X-ray diffraction demonstrates that, after crystallization has occurred, no solid solutions involving iron oxides and arsenate are formed.


Document Type: Research Article


Publication date: 1996-09-01

More about this publication?
  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Information for Advertisers
  • WEF Bookstore
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more