Control of High-Volume, Low-VOC-Concentration Air Streams

EPA Contract Number: 68D60053
Title: Control of High-Volume, Low-VOC-Concentration Air Streams
Investigators: Wijmans, J. (Hans) G.
Small Business: Membrane Technology and Research Inc.
EPA Contact: Manager, SBIR Program
Phase: II
Project Period: September 1, 1996 through December 1, 1998
Project Amount: $225,000
RFA: Small Business Innovation Research (SBIR) - Phase II (1996) Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics

Description:

High-volume, low-VOC-concentration air streams are produced by a broad range of industries. The most widely used conventional treatment technology is carbon adsorption. However, carbon adsorption produces dilute aqueous waste streams as a secondary waste, is difficult to adapt to particulate-containing streams, and is too expensive to be applied to some industries. Scrubbing the air with a absorbent liquid is a low-cost alternative technology, but it is generally limited to scrubbing with water because of the expense and difficulty of regenerating non-aqueous scrubbing liquids. The technology proposed here uses a low volatility organic scrubbing liquid to remove VOCs from the dilute air stream. The liquid is regenerated by a combined stripper/membrane vapor separation unit.

In Phase I of the project, the technical and economic feasibility of the scrubbing liquid regeneration step was evaluated in laboratory tests with a stripper/pilot-scale membrane system. An economic analysis prepared on the basis of these results shows the process offers significant cost and operating advantages over alternative technologies for VOC-containing streams in the 500 to 5,000 ppm range. In the proposed Phase II project, a scrubbing unit will be added to the existing system for evaluation of the complete process at the large pilot plant scale.

Supplemental Keywords:

small bsiness, SBIR, air pollution, engineering., RFA, Scientific Discipline, Air, Toxics, particulate matter, Chemical Engineering, air toxics, Environmental Chemistry, Chemistry, VOCs, Engineering, Chemistry, & Physics, Environmental Engineering, emission control strategies, particulates, air pollutants, emission control technologies, ambient air, membrane technology , industrial emissions, air pollution, ambient emissions, industrial air pollution, treatment, air scrubbers, Volatile Organic Compounds (VOCs), absorbent liquid, membrane technology

Progress and Final Reports:

  • Final

  • SBIR Phase I:

    Control of High-Volume, Low-VOC-Concentration Air Streams