Grantee Research Project Results
Final Report: An Integrated Approach to Understanding and Reducing Fat, Oil, and Grease (FOG) Deposit Formation for Sustainable Sewer Collection Systems
EPA Grant Number: R834264Title: An Integrated Approach to Understanding and Reducing Fat, Oil, and Grease (FOG) Deposit Formation for Sustainable Sewer Collection Systems
Investigators: Ducoste, Joel
Institution: North Carolina State University
EPA Project Officer: Page, Angela
Project Period: August 1, 2009 through July 31, 2012 (Extended to July 31, 2014)
Project Amount: $569,568
RFA: Innovative and Integrative Approaches for Advancing Public Health Protection Through Water Infrastructure Sustainability (2008) RFA Text | Recipients Lists
Research Category: Pollution Prevention/Sustainable Development , Sustainable and Healthy Communities , Water
Objective:
The objectives of this study are as follows: 1) perform detailed bench scale tests that attempt to recreate FOG deposits and determine parameters that significantly influence their formation rate, 2) develop a numerical model that describes the FOG deposit formation kinetics, 3) perform bench scale tests to explore treatment options that improve FOG deposit chemical precursor removal with grease interceptors, 4) perform pilot scale experiments on a continuous flow sewer collection system that characterizes spatial variations in FOG deposit formation, and 5) develop a sewer collection system model to predict the high FOG deposit accumulation zones in sewer pipes.
Summary/Accomplishments (Outputs/Outcomes):
Overall, the results of this research study provided a comprehensive understanding of the mechanisms of FOG deposit formation in sewer systems. These insoluble hard solids hold tightly to the sewer pipe wall due to their rheological properties and contain a significant amount of calcium and primarily saturated long chain fatty acids. The process of saponification that these FOG deposits undergo is quite complex with many factors that can impact the rate of formation, their chemical constituents, and their rheological behavior. Ongoing research is needed to understand links between corrosion kinetics in sewer systems and FOG deposit formation, the mechanisms FOG hydrolysis and its rate beyond alkali hydrolysis in grease interceptors, FOG and FFA removal technologies that are non-intrusive in grease interceptors, and exploring more efficient ways to reduce temperature in grease interceptors.
Journal Articles on this Report : 2 Displayed | Download in RIS Format
Other project views: | All 19 publications | 6 publications in selected types | All 6 journal articles |
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Type | Citation | ||
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Iasmin M, Dean LO, Ducoste JJ. Quantifying fat, oil, and grease deposit formation kinetics. Water Research 2016; 88:786-795. |
R834264 (Final) |
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Yousefelahiyeh R, Dominic C, Ducoste J. Modeling fats, oil and grease deposit formation and accumulation in sewer collection systems. JOURNAL OF HYDROINFORMATICS 2014;19(3):443-455. |
R834264 (Final) |
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Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.
Project Research Results
- 2013 Progress Report
- 2012 Progress Report
- 2011 Progress Report
- 2010 Progress Report
- Original Abstract
6 journal articles for this project