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Hydrogen Sulfide Attenuation within Landfill Covers

Title: Hydrogen Sulfide Attenuation within Landfill Covers.
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Name(s): Green, Stefan Larae, author
Abichou, Tarek, professor directing thesis
Clark, Clayton J., II, committee member
Chen, Gang, committee member
Florida State University, degree granting institution
FAMU-FSU College of Engineering, degree granting college
Department of Civil and Environmental Engineering, degree granting department
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2015
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource (100 pages)
Language(s): English
Abstract/Description: There has been much research done on the reduction, or attenuation, of hydrogen sulfide (H2S), particularly within landfill cover soils, as H2S can cause many issues when exposed to the atmosphere. The objective of this research study was to understand hydrogen sulfide (H2S) attenuation within landfill cover soils, and to use mass balancing to determine how much sulfur was retained within each layer of test pad. Both of these were completed through 403 days of monitoring three 65 feet by 35 feet lysimeter test pads constructed at the Riverbend Landfill. Test Pad 1 was constructed with 18 inches of local soil and an underlying 6 inch gravel layer. Test Pad 2 was constructed with 12 inches of compost, 6 inches of local soil and an underlying 6 inch gravel layer. Test Pad 3 was constructed with 6 inches of local soil and an underlying 6 inch gravel layer. Monitoring on Test Pad 3 was stopped on April 27th, 2015 due to erosion of the 6 inch soil layer, while Test Pads 1 and 2 were monitored until July 20th, 2015. Readings of landfill gas and H2S inflow, and bottom landfill gas and H2S concentrations were taken in each testing pad on a weekly basis. Bottom H2S loading into the soil layer and top H2S emissions from the soil layer were also measured to determine the removal efficiency of H2S. The average H2S removal efficiency of the test pads is 95%, with Test Pad 1 having a removal efficiency of 99%, Test Pad 2 having a removal efficiency of 99%, and Test Pad 3 having a removal efficiency of 82%. Six soil samples and five water samples were taken to measure sulfur concentration within the testing pads. Soil samples were also taken within each of the layers of each testing location within each test pad to determine the soil type and the water content of each soil layer. Mass balance was calculated by taking the amount of sulfur loaded into the bottom of each testing pad, and subtracting the sum of sulfur loaded into the soil cover, sulfur emitted from the soil cover into the atmosphere, and sulfur removed from the system with water as sulfate. Test Pads 1 and 2 yielded similar results, both retaining about 6000 grams of sulfur within their cover layers, while the results from Test Pad 3 suggest that more sulfur was removed from the system than was originally pushed into the system, which is not possible and suggests errors with either testing methods or the testing pad itself. While the concentrations of sulfur within each test pad layer were measured, there were concerns with their dependability that caused them to not be used to determine the amount of sulfur in each layer.
Identifier: FSU_2015fall_Green_fsu_0071N_12959 (IID)
Submitted Note: A Thesis submitted to the Department of Civil Engineering in partial fulfillment of the Master of Science.
Degree Awarded: Fall Semester 2015.
Date of Defense: October 30, 2015.
Keywords: attenuation, geotechnical, hydrogen sulfide, landfills
Bibliography Note: Includes bibliographical references.
Advisory Committee: Tarek Abichou, Professor Directing Thesis; Clayton Clark, II, Committee Member; Gang Chen, Committee Member.
Subject(s): Civil engineering
Environmental engineering
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_2015fall_Green_fsu_0071N_12959
Owner Institution: FSU

Choose the citation style.
Green, S. L. (2015). Hydrogen Sulfide Attenuation within Landfill Covers. Retrieved from http://purl.flvc.org/fsu/fd/FSU_2015fall_Green_fsu_0071N_12959