Extraction of Copper and Zinc From Mixed-Metal Cyanide Solution Using Solid Phase Extraction

EPA Contract Number: 68D30105
Title: Extraction of Copper and Zinc From Mixed-Metal Cyanide Solution Using Solid Phase Extraction
Investigators: Hammen, Richard F.
Small Business: ChromatoChem Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: September 1, 1993 through March 1, 1994
Project Amount: $50,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1993) RFA Text |  Recipients Lists
Research Category: SBIR - Pollution Prevention , Pollution Prevention/Sustainable Development , Small Business Innovation Research (SBIR)


Removal of toxic metals from wastewater streams has become a problem of increasing national importance, as a result of increasing concern for our environment, and increasingly stringent waste disposal regulations, ChromatoChem, Inc., has developed an economical and effective new technology for the removal of low levels of toxic metal ions from wastewater streams, using Solid Phase Extraction (SPE). This SPE technology uses metal-selective reagents covalently bound to a silica sound support by means of a proprietary hydrophilic tether molecule. This research will use SPE to address the environmental and economic problems resulting from the copper and zinc cyanide waste products created by heap- leaching practices used in the gold mining industry. The Phase I work will investigate methods to separate the copper and zinc cyanide complexes from gold cyanide. The benefits of such separation will include: decreased introduction of metal cyanide complexes into the environment, and reduced mining costs by recycling of cyanide and the recovery of copper and zinc metals.

Supplemental Keywords:

Scientific Discipline, Toxics, Waste, Water, Sustainable Industry/Business, National Recommended Water Quality, cleaner production/pollution prevention, Wastewater, Environmental Chemistry, Chemistry, Contaminant Candidate List, Technology for Sustainable Environment, New/Innovative technologies, Engineering, Hazardous, 33/50, Engineering, Chemistry, & Physics, Environmental Engineering, cyanide solutions, wastewater treatment, extractant, cyanide, solid phase extraction (SPE), cyanide compounds, toxic metals, recycling, Zinc, treatment, innovative technology, copper, pollution prevention, innovative technologies, extraction of metals, toxic metals removal

Progress and Final Reports:

  • Final