ISU
Home
ISURF/OIPTT
Home
ISURFtech
Home
Advanced
Search
RSS
Feeds
Innovative Sulfide Removal Technology for Wastewater Treatment
Category(s):
For Information, Contact:
Craig Forney
Commercialization Manager, Chemistry and Materials Sciences
515-294-4740
licensing@iastate.edu
Web Published:
5/14/2015
ISURF #
3205
Summary:
Iowa State University researchers have developed a method for removing sulfide compounds from wastewater and reducing their concentrations to as low as 1 ppmv without disturbing methanogenesis.

Development Stage:
Shown to reduce sulfur compounds to concentrations as low as 1 ppmv

Description:
Sulfur compounds present in industrial wastewater have the potential to be converted into highly corrosive and malodorous hydrogen sulfide, which not only can be detrimental to the performance of metal catalysts employed in thermo-catalytic processes, but also reduces the quality of methane obtained as a renewable energy source from wastewater treatment in bioreactors. Current approaches to these problems use the addition of chemicals to treat sulfur compounds, adding costs and creating the need for subsequent disposal.  To overcome these drawbacks, ISU researchers have developed an economical method for removal of sulfide compounds from wastewater which does not generate additional compounds with no economic value, and which also does not disturb methanogesis in bioreactors.  This process has shown to successfully reduce sulfur compounds to concentrations as low as 1 ppmv with minimal sulfate production in wastewater with a high solids content.

Advantage:
• Effective for higher concentrations of sulfide compounds
• Maximum elemental sulfur recovery
• No impact on methanogenesis
• Reduced need for chemical additives
Application:
Wastewater treatment
Patent Information:
*To see the full version of the patent(s), follow the link below, then click on "Images" button.
Country Serial No. Patent No. Issued Date
United States 12/564,581 8,366,932* 2/5/2013


Direct Link: