Reduction of Indoor Air Pollution by Membrane Stripping of Waterborne Radon Gas

EPA Contract Number: 68D00022
Title: Reduction of Indoor Air Pollution by Membrane Stripping of Waterborne Radon Gas
Investigators: Matson, Stephen L.
Small Business: Arete Technologies
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: July 1, 1990 through January 1, 1991
Project Amount: $49,815
RFA: Small Business Innovation Research (SBIR) - Phase I (1990) RFA Text |  Recipients Lists
Research Category: Air Quality and Air Toxics , SBIR - Air Pollution , Small Business Innovation Research (SBIR)


Radon-222 in indoor air has been identified as a pervasive pollutant and a significant health threat. Arete Technologies proposes to investigate a membrane-based system for mitigating the indoor air pollution problem to which waterborne radon gas can contribute. The system, which operates at water supply pressure, avoids the problems of radioactivity buildup and spent carbon disposal associated with GAC adsorption, and it is simpler, quieter, and much smaller then diffused bubble aeration. In addition to these performance advantages, membrane stripping promises to be very cost- competitive if not significantly less expensive than conven- tional approaches.

In Phase 1, the investigators will screen and evaluate candi- date hollow-fiber membranes; assemble test modules; and design, construct, and operate a laboratory-scale radon removal system on both clean Rn-containing water and Rn- laden groundwater containing high levels of iron and sedi- ment. With the aid of Phase I data, they will refine their membrane, module, and system designs and be in a position to evaluate the technical and economic feasibility of the approach.

Supplemental Keywords:

RFA, Scientific Discipline, Air, Sustainable Industry/Business, Chemical Engineering, air toxics, Environmental Chemistry, Sustainable Environment, Chemistry, Technology for Sustainable Environment, Civil/Environmental Engineering, Civil Engineering, indoor air, Chemistry and Materials Science, Engineering, Engineering, Chemistry, & Physics, Environmental Engineering, Agricultural Engineering, ambient air quality, emission control strategies, membrane organic vapor recovery system, waterborne radon gas, waterborne radon gas , radon reduction, membrane technology , membranes, emissions control, radon, mitigation strategies, membrane stripping, indoor air quality, radon mitigation, radon removal system, atmospheric chemistry, membrane technology

Progress and Final Reports:

  • Final
  • SBIR Phase II:

    Reduction of Indoor Air Pollution by Membrane Stripping of Waterborne Radon Gas