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Making Cement at Ambient Temperature Using 55% Municipal Solid Waste Ash

Award Information
Agency: Department of Energy
Branch: ARPA-E
Contract: DE-AR0001403
Agency Tracking Number: 1954-1646
Amount: $599,605.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: N
Solicitation Number: DE-FOA-0001954
Solicitation Year: 2020
Award Year: 2021
Award Start Date (Proposal Award Date): 2022-05-19
Award End Date (Contract End Date): 2023-05-18
Small Business Information
1220 E 7th St Suite 900
Winona, MN 55987
United States
DUNS: 116938632
HUBZone Owned: No
Woman Owned: Yes
Socially and Economically Disadvantaged: No
Principal Investigator
 Carolyn Dry
 (507) 703-1559
Business Contact
 Carolyn Dry
Phone: (507) 703-1559
Research Institution
 Natural Resources Research Institute - University of Minnesota Duluth
5013 Miller Trunk Hwy
Duluth, MN 55811
United States

 () -
 Nonprofit College or University

This novel approach to making cement at ambient temperature uses 55% Municipal Solid Waste (MSW) incinerator ash AND adds chemicals and wastes to sequester environmentally problematic combustion gases, chemicals and heavy metals during incineration, that in turn eliminates undesired chemicals in the final product leachate. The main project objective is the development of a novel cement product based on using large volumes of MSW ash (55%) as an alternative to traditional ordinary Portland cement (OPC) which cannot sequester nearly as much ash (16%). A magnesium oxide (MgO)-containing co-feed (and other mineral co-feeds can be added before combustion for a twofold effect: 1) acting as an anti-slagging agent or flocculant to protect against slag buildup on an incinerator’s heat transfer boiler tubes; and 2) sequestering gases, harmful chemicals, and heavy metals, while simultaneously being co-calcined. This cement is a chemically based cement rather than OPC, in which heat of 1300°C is required and sets up in about a month for a compressive strength of average 3000 psi. Our cement uses no heat, gives off no CO2, hardens quickly, and averages high strength. This project addresses the ARPA-E goals of making municipal solid waste ash into a value added product that uses no more energy to manufacture.

* Information listed above is at the time of submission. *

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