TY - GEN
T1 - In-situ treatment of landfill leachate using bentonite and polyurethane with soils
AU - Chae, Heehun
AU - Park, Chansoo
AU - Park, Jae Woo
AU - Chun, Byung Sik
AU - Shin, Wonsik
PY - 2006
Y1 - 2006
N2 - Composite layers of bentonite and polyurethane (PU) foam with local sand and yellow brown soil were experimented in batch, column, and pilot-scale to simulate in-situ treatment of landfill leachate. The composite layers acted as both sorption and biodegradation barrier with control of hydraulic conductivity. In order to enhance microbial activity, oxygen and methanol were supplied through diffusion from the silicon tubings using peristaltic pump. Scanning electron microscopic analysis indicated that microorganisms were attached on the surface of PU foam. A batch test showed that PU foam was more effective in sorbing nitrate than powdered activated carbon. In the column experiment with 20% of PU foam, about 96% of BOD, 63% of COD, 74% of total nitrogen, and 83% of color were removed using the proposed layers. The COD removal rate in pilot-scale experiment was about 30%.
AB - Composite layers of bentonite and polyurethane (PU) foam with local sand and yellow brown soil were experimented in batch, column, and pilot-scale to simulate in-situ treatment of landfill leachate. The composite layers acted as both sorption and biodegradation barrier with control of hydraulic conductivity. In order to enhance microbial activity, oxygen and methanol were supplied through diffusion from the silicon tubings using peristaltic pump. Scanning electron microscopic analysis indicated that microorganisms were attached on the surface of PU foam. A batch test showed that PU foam was more effective in sorbing nitrate than powdered activated carbon. In the column experiment with 20% of PU foam, about 96% of BOD, 63% of COD, 74% of total nitrogen, and 83% of color were removed using the proposed layers. The COD removal rate in pilot-scale experiment was about 30%.
UR - https://www.scopus.com/pages/publications/34249017969
M3 - Conference contribution
AN - SCOPUS:34249017969
SN - 0727734741
SN - 9780727734747
T3 - 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress
SP - 103
EP - 109
BT - 5th ICEG Environmental Geotechnics
T2 - 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress
Y2 - 26 June 2006 through 30 June 2006
ER -