Retardation of volatile organic compound movement by a soil-bentonite slurry cutoff wall amended with ground tires

• Published in: Water environment research Vol. 69; no. 5; pp. 1022 - 1031
• Main Authors: Park, Jae K., Kim, Jae Y., Madsen, Curtis D., Edil, Tuncer B.
• Format: Journal Article
• Language: English
• Published: Alexandria, VA Water Environment Federation 01.07.1997; Blackwell Publishing Ltd
• Subjects: AGUAS SUBTERRANEAS; Applied sciences; BENTONITA; BENTONITE; Biological and physicochemical properties of pollutants. Interaction in the soil; Bromides; Chlorides; CLAY MINERALS; Coefficients; COMPOSE VOLATIL; COMPUESTO VOLATIL; CONTROL DE LA CONTAMINACION; EAU SOUTERRAINE; ESTIERCOL FLUIDO; Exact sciences and technology; GROUNDWATER; HALOGENATED HYDROCARBONS; HIDROCARBUROS HALOGENADOS; Hydraulic conductivity; HYDROCARBURE HALOGENE; INSECTICIDAS; INSECTICIDE; INSECTICIDES; LISIER; LUTTE ANTIPOLLUTION; MASS TRANSFER; METHYLENE CHLORIDE; MINERAL ARGILEUX; MINERALES DE ARCILLA; MOVEMENT IN SOIL; NEUMATICOS; PARTITION COEFFICIENT; PNEUMATIQUE; Pollution; POLLUTION CONTROL; POLLUTION DE L'EAU; POLUCION DEL AGUA; POROSIDAD; POROSITE; POROSITY; Porous materials; PREVENTION; PROCESOS DE TRANSPORTE EN EL SUELO; Research Papers; SATURATED HYDRAULIC CONDUCTIVITY; SLURRIES; SLURRY; SLURRY CUTOFF WALL; Soil and sediments pollution; SOIL TRANSPORT PROCESSES; Specimens; TIRES; TOLUENE; TOLUENO; TRANSPORT DANS LE SOL; TRICHLOROETHYLENE; TYRES; VOLATILE COMPOUNDS; VOLATILE ORGANIC COMPOUNDS; WATER POLLUTION; XILENO; XYLENE; Scrap rubber; Volatile organic compound; Particle suspension; Experimental study; Soil pollution; Modeling; Mass transfer; Tyre; Amendment; Bentonite; Water pollution; Ground water; Ethylene(trichloro)
• ISSN: 1061-4303; 1554-7531
• DOI: 10.2175/106143097X125722

Laboratory-scale column tests were conducted to investigate the retardation of volatile organic compound (VOC) movement through a soil-bentonite (SB) slurry cutoff wall material amended with ground tires, which was found to sorb a significant amount of VOCs. The hydraulic conductivity of the SB slurry cutoff wall backfill material was not affected by the addition of ground tires. The hydraulic conductivity of the ground-tire-amended SB backfill specimen increased 1.1 to 1.2 times after the spiking with VOCs; however, that of the conventional SB backfill specimen increased 1.7 to 1.8 times. The effective porosity of the backfill specimens tested was in the range of 70 to 100%. The partition coefficient of trichloroethylene (TCE) increased from 0.96 to 13.41 L/kg when 15% by weight of ground tires was added. As a result, the time for TCE to break through to 10% of the influent concentration became approximately 10 times longer by the addition of 15% ground tires by weight. Ground tire addition to the SB slurry cutoff wall appears to provide a significant amount of VOC retardation capacity without deteriorating the performance of the slurry cutoff wall.