Go to Seminar

Links to Additional Resources

Feedback form

CLU-IN Studio
United States Environmental Protection Agency
Nanotechnology - Metal Remediation
Sponsored by: National Institutes of Health, National Institute of Environmental Health Sciences, Superfund Basic Research Program
Time/Date of Presentation:

No deliveries for this seminar are currently scheduled.

You may be interested in the following archive of this seminar:

Presentation Overview:

The Superfund Basic Research Program (SBRP), in collaboration with the Environmental Protection Agency (EPA), presents "Nanotechnology - Metal Remediation" the 2nd session of the 2007 edition of Risk-e-Learning "Nanotechnology: Applications and Implications for Superfund." This session will highlight the potential of nanotechnology-based approaches to remove metals from drinking water.

Dr. Mason Tomson, Professor of Chemical and Environmental Engineering (Rice University, Houston, TX) will introduce the use of nano-magnetite to remove arsenic from drinking water. Nano-magnetite has been found to be a good adsorbent for arsenate and arsenite. Dr. Tomson overviews results from research at the Center for Biological and Environmental Nanotechnology in collaboration with Drs. Vicki Colvin and Paul Laibinis. The research covered 1) kinetic studies with arsenate and arsenite to various concentrations of nano-magnetite were conducted by a batch process under controlled conditions, 2) the effect of competing ions (chloride, phosphate, sulfate, silica, and bicarbonate) on arsenic adsorption onto nano-magnetite, 3) comparison of nano-magnetite, nano-magnetite and iron, and iron for arsenic adsorption. These three processes were tested on arsenic contaminated water from Brownsville, TX - all achieved the treatment goal in less than one minute with minimum iron residue.

Dr. Shas Mattigod, Senior Research Scientist (Pacific Northwest National Laboratory, Richland, WA), will introduce his research using functionalized nanoporous ceramic sorbents for removal of mercury and other contaminants. This talk overviews the synthesis of self-assembled monolayers on mesoporous silica (SAMMS) and describes how functionalized surface chemistry can be used for adsorption of particular metal species of mercury, chromium and arsenic. He will also discuss possible application of SAMMS technology to separate actinides from nuclear wastes. Dr. Mattigod will cover treatment costs, waste form stability, and potential applications and commercialization of this approach.

Presenters: Instructor: Moderator:
  • William A. Suk, Director, Superfund Basic Research Program, National Institute of Environmental Health Sciences (
Participation Tips and Suggestions

View tips and suggestions for registrants

Go to Seminar

Press the "Go to Seminar" button to view the seminar. Please be at this location at the beginning of the conference call.

Download Seminar For Future Reference

The seminar is available for download in both Microsoft PowerPoint and Adobe Acrobat formats. Both formats include the instructors' notes.

After the seminar is complete, please view:
Links to Additional Resources Seminar Feedback Form

Produced by the U.S. EPA, Technology Innovation and Field Services Division
Questions about our Internet Seminars? | Technical problems?
Rehabilitation Act Notice for Reasonable Accommodation, Webinar Recording, and Content Disclaimer

Technology Innovation Program U.S. Environmental Protection Agency