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PI: Prof. J. N. Kuhn (jnkuhn@usf.edu; 813 974 6498) &
co-PI: Prof. B. Joseph (bjoseph@usf.edu)
University of South Florida, 4202 E. Fowler Ave ENG030, Tampa FL 33620

Student Researchers: Yetunde "Tosin" Sokefun (PhD), Umadevi Gopalakrishnan (MS), Olusola Johnson (MS), and Madeline Van Dyne (BS)

Sponsor: William W. Hinkley Center for Solid and Hazardous Waste Management at the University of Florida

Research Description: Landfill gas (LFG) is increasingly used and proposed for a variety of traditional and proposed Waste-to-Energy (WTE) technologies. A challenge for all of these processes is that carbon dioxide (CO2) is produced in similar quantities as methane (CH4), the primary energy carrier. As a result, the lowered energy content either hampers the performance of the WTE process (e.g., electricity generation) or necessitates purification. The high costs of purification is especially prohibitive for production of compressed natural gas (CNG) and pipeline quality natural gas, due to the stringent purity specifications.

Scope of work: In this work, we propose to develop an efficient, low-cost adsorbent for CO2 removal from biogas. Amine-immobilized silica adsorbents are anticipated to be highly selective for CO2 removal from methane and require minimal energy input for regeneration. The amine and silica structure will be evaluated on the performance, in terms of selectivity, regeneration ability, and stability. The results of the experimental studies will feed into a techno-economic feasibility study (with and without carbon capture) in the context of using landfill gases for energy recovery purposes including CNG, power, or liquid fuels. Subsequent efforts (Part 2) beyond this currently proposed work would focus on carbon capture from gaseous emissions from WTE processes and the cost of CO2 recovery and sequestration. The proposed effort leverages previous and ongoing efforts on research and demonstration of LFG to diesel fuel through thermochemical catalytic processes, contaminant removal from LFG, and economic and environmental impact from WTE technologies, which have been funded by the Hinkley Center, Florida Energy Systems Consortium (FESC), the Department of Energy, VentureWell and T2C-Energy, LLC.



Technical Awareness Group (TAG):

Our first TAG meeting was held on 3/20/19. LINK

The second TAG meeting (picture below) was held on 10/15/19. LINK


Researcher Olusola Johnson presenting this work at FL SWANA (left) and NOBCChe (right)


TAG members

John Schert


Hinkley Center

Wester W. Henderson

Research Coordinator III

Hinkley Center

Devin Walker

Process Engineer


Matt Yung


Nat. Renewable Energy Lab

Tim Roberge

Vice President of Corporate Development


Richard K Meyers

SWRS Program Manager

Broward County Solid Waste and Recycling Services

Lee Casey

Chief of Environ. Compliance (Retired)

Miami Dade County Dept of Solid Waste

Canan “Janan” Balaban

Asst. Director

Florida Energy Systems Consortium

Ron Beladi


Neel-Schaffer, Inc.

Rebecca Rodriguez

Engineer Manager II

Lee County Solid Waste Division

Linda Monroy

Project Manager Associate

Lee County Solid Waste Division

Sam Levin



Charles “Peb” Hendrix

Chief Operating Officer


Tony Elwell

Staff Engineer I

HSW Engineering, Inc

Nada Elsayed

Scientist, PD

Catalent Pharma Solutions Inc

Yolanda Daza

Process TD Engineer

Intel Corporation

James Flynt

Chief Engineer 

Orange County Utilities Department 

Gita Iranipour

Engineer Associate

Hillsborough County Public Utilities Department

Luke Mulford

Water Quality Manager

Hillsborough County Public Utilities Department

Ray Oates

Solid Waste Compliance Manager

Citrus County Division of Solid Waste Management



We thank the members of our TAG for their service and input.


Progress Reports:

First Quarter - LINK

Second Quarter - LINK

Third Quarter - LINK



Project supported in funding by William W. Hinkley Center for Solid and Hazardous Waste Management at the University of Florida