Use of cysteine-modified TiO{sub 2} photocatalyst for treatment of combined organic/inorganic wastewaters

PDF Version Also Available for Download.

Description

The utilization of semiconductor-based photocatalysts, such as titanium dioxide (TiO{sub 2}), for carrying out photochemical reactions to treat water contaminated with organic and inorganic compounds has received considerable attention in recent years. The authors strategy for optimizing the process of photocatalytic reduction of heavy metals on TiO{sub 2} colloids involves modifying the colloid surface. Specific project objectives included: (1) identification and development of potential biomimetic photocatalysts for simultaneous heavy metal recovery and organic destruction; (2) identification of treatment conditions that minimize the residual metal concentration(s) contained in the effluent, even in the presence of complexants and interferences, and development of ... continued below

Physical Description

15 p.

Creation Information

Peters, R.W.; Wu, J.M.; Meshkov, N.; Thurnauer, M.C. & Ostafin, A.G. March 1, 1995.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

The utilization of semiconductor-based photocatalysts, such as titanium dioxide (TiO{sub 2}), for carrying out photochemical reactions to treat water contaminated with organic and inorganic compounds has received considerable attention in recent years. The authors strategy for optimizing the process of photocatalytic reduction of heavy metals on TiO{sub 2} colloids involves modifying the colloid surface. Specific project objectives included: (1) identification and development of potential biomimetic photocatalysts for simultaneous heavy metal recovery and organic destruction; (2) identification of treatment conditions that minimize the residual metal concentration(s) contained in the effluent, even in the presence of complexants and interferences, and development of appropriate scale-up criteria; and (3) determination of system performance, including an economic analysis for comparison with conventional technologies (such as pump-and-treat using metal hydroxide precipitation of ion exchange). The experimental results indicate that simultaneous removal of organic compounds (such as naphthalene) and inorganic compounds (such as lead ions) in aqueous solution can be achieved using a TiO{sub 2} photocatalyst system with UV light. The removal rates of organic and inorganic compounds can be enhanced through surface modification of the TiO{sub 2} photocatalyst using an organic substance such as cysteine. The cysteine-modified TiO{sub 2} photocatalyst enhanced the oxidation rates of organics as well as the reduction rates of heavy metals in the irradiated solution, resulting in improved treatment efficiencies for combined organic/inorganic wastestreams.

Physical Description

15 p.

Notes

OSTI as DE95008266

Source

  • 5. international symposium on chemical oxidation, Nashville, TN (United States), 15-17 Feb 1995

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE95008266
  • Report No.: ANL/ES/CP--85670
  • Report No.: CONF-950241--2
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/28267 | External Link
  • Office of Scientific & Technical Information Report Number: 28267
  • Archival Resource Key: ark:/67531/metadc673081

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • March 1, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • Dec. 14, 2015, 6:20 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 4

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Peters, R.W.; Wu, J.M.; Meshkov, N.; Thurnauer, M.C. & Ostafin, A.G. Use of cysteine-modified TiO{sub 2} photocatalyst for treatment of combined organic/inorganic wastewaters, report, March 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc673081/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.