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NSF award 2552624 · Arkansas State University Main Campus

ERI: Alkaline Thermal Pretreatment to Improve Anaerobic Digestion of Sewage Sludge through Mitigating Volatile Sulfur Compounds: Reactor Performance, Pathways, and Mechanisms

Final report due

28 October 2028

in 741 days · The award ends on 30 June 2028.

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Dates this award owes

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  • Decide about an extension2 Mar 2028in 501 days

    award ending 2028-06-30 · Research.gov

  • Extension request16 May 2028in 576 days

    award ending 2028-06-30 · Research.gov

  • No-cost extension notice20 Jun 2028in 611 days

    award ending 2028-06-30 · Research.gov

  • Final report due28 Oct 2028in 741 days

    award ending 2028-06-30 · Research.gov

  • Project outcomes report due28 Oct 2028in 741 days

    award ending 2028-06-30 · Research.gov

  • Award is closed out28 Oct 2028in 741 days

    award ending 2028-06-30 · Research.gov

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How we got this date

  1. NSF lists this award's end date as 30 June 2028.
  2. NSF rules say the final report is due no later than 120 days after that.
  3. So the final report is due by 28 October 2028.

Read the rule on Research.gov

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Award card

Award number
2552624
Period of support
1 Jul 2026 – 30 Jun 2028
Amount
$177,108
Awardee
Arkansas State University Main Campus, Jonesboro, AR
Program
EnvE-Environmental Engineering
Directorate
ENG

Abstract

Anaerobic digestion uses microbes to turn organic waste into clean energy, such as methane gas, in the absence of oxygen. Sewage sludge can be converted anaerobically to methane gas, which is used to generate heat and electricity. However, sewage sludge contains a high amount of sulfur. During anaerobic digestion, this sulfur turns into volatile gases making the energy-producing process less efficient. Sulfur gas…

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