Silica Materials for Mercury Recovery From Wastewater

EPA Contract Number: 68D70040
Title: Silica Materials for Mercury Recovery From Wastewater
Investigators: Kroh, Franklin O.
Small Business: TPL Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: September 1, 1997 through March 1, 1998
Project Amount: $70,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1997) RFA Text |  Recipients Lists
Research Category: Water and Watersheds , SBIR - Water and Wastewater , Small Business Innovation Research (SBIR)


A number of industrial processes generate wastewater with mercury contamination. Existing cleanup processes have difficulties in achieving low mercury discharge limits, especially in the presence of competing metal ions already below their discharge limits. Commercial ion exchange media are not selective for mercury, so other metal ions compete with mercury for binding sites. Consequently, excessive amounts of ion exchanger are required.

This Phase I project will develop two series of highly selective silica materials for removing mercury from contaminated wastewater. Relative to the low selectivity of state-of-the-art materials, up to four orders of magnitude less material will be required to achieve mercury discharge limits. In Phase I, the silica materials will be synthesized. Each will be evaluated for mercury capacity, selectivity relative to competing ions, ease of regeneration and reclamation of metal, and cost of production. If successful, the silica materials will be useful for the purification of wastewater generated in chloralkali manufacture, metal plating, battery recycling, and dentistry.

Supplemental Keywords:

small business, SBIR, wastewater treatment, engineering, chemistry., RFA, Scientific Discipline, Toxics, Waste, Water, National Recommended Water Quality, Chemical Engineering, Wastewater, Environmental Chemistry, Chemistry, HAPS, Civil/Environmental Engineering, Hazardous Waste, Civil Engineering, Chemistry and Materials Science, Engineering, Hazardous, 33/50, Environmental Engineering, Mercury, wastewater treatment, silica materials, mercury & mercury compounds, Mercury Compounds, mercury recovery

Progress and Final Reports:

  • Final