Heavy Metal Removal and Recovery with a Natural Zeolite Continuous Ion Exchange Thermal Multicomponent FractionatorEPA Contract Number: 68D10061
Title: Heavy Metal Removal and Recovery with a Natural Zeolite Continuous Ion Exchange Thermal Multicomponent Fractionator
Investigators: Andrews, Richard D.
Small Business: Boulder Innovative Technologies
EPA Contact: Manager, SBIR Program
Project Period: September 1, 1991 through March 1, 1992
Project Amount: $32,628
RFA: Small Business Innovation Research (SBIR) - Phase I (1991) RFA Text | Recipients Lists
Research Category: SBIR - Waste , Hazardous Waste/Remediation , Small Business Innovation Research (SBIR)
Description:Ion exchange is an attractive technology for removal of heavy metals from water and wastewaters, but it is com- monly found to be uneconomical due to the high cost of chemicals and disposal of the brines or secondary wastes generated. Several improvements to this technology are proposed to allow ion exchange to be more widely applied to the removal of toxic heavy metals at Superfund sites and in other situations involving heavy metal contamination of water and ground water such as mine drainages and indus- trial wastewaters.
The proposed technology will use an inexpensive natu- rally occurring ion exchange mineral which costs 10 to 30 times less than conventional ion exchange resins. In addition, a continuous treatment system will be investigated which uses no chemicals for eluting the metals from the exchanger as do virtually all current ion exchange systems. It will use low level thermal driving force. Other innova- tions will be involved which will allow the separate recov- ery of concentrated single metal products.