A Low Cost, Long Life Zinc Oxide Based Sorbent

EPA Contract Number: 68D50162
Title: A Low Cost, Long Life Zinc Oxide Based Sorbent
Investigators: Copeland, Robert
Small Business: TDA Research Inc.
EPA Contact: Manager, SBIR Program
Phase: II
Project Period: September 1, 1995 through February 1, 1998
Project Amount: $195,372
RFA: Small Business Innovation Research (SBIR) - Phase II (1995) Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics


Coal fired Gasifer Combined Cycles (GCC) have both high efficiency and very low emissions. A critical need for GCCs is a method of removing the H2S produced from the sulfur in the coal from the hot gases. There has been extensive research on hot gas clean-up systems, focused on the use of a zinc oxide based sorbent (e.g., zinc titanate). Unfortunately, current sorbents are relatively expensive, and the sorbent can be used for only a few cycles (less than 20) before it fall apart. What is needed is a low cost sorbent that also has a long life.

TDA Research, Inc. (TDA) has develop a new method of producing sorbent ZnO based sorbents with greatly increased lifetimes and the potential for low costs. During Phase I, they demonstrated that the sorbent could have a long life and remain active. While TDA's formulation shows significant promise, additional work is needed to optimize formulation, demonstrate the capacity for many more cycles, and to evaluate the advantages of the new sorbent.

Supplemental Keywords:

small business, SBIR, engineering, chemistry., RFA, Scientific Discipline, Air, Waste, Chemical Engineering, air toxics, Environmental Chemistry, Chemistry, Incineration/Combustion, Environmental Engineering, ambient air quality, emission control strategies, combustion byproducts, air pollutants, coal fired gasifer combined cycles (GCC), sulfur, air pollution, emission controls, combustion technology, zinc oxide sorbent, combustion exhaust gases, aerosol, coal combustion, coal fired power plants, coal fired gasifer combined cycles, clean combustion

Progress and Final Reports:

  • Final

  • SBIR Phase I:

    A Low Cost, Long Life Zinc Oxide Based Sorbent