Permeation of benzene, trichloroethene and tetrachloroethene through plastic pipes
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Modeling benzene permeation through drinking water high density polyethylene (HDPE) pipes.
Organic compounds such as benzene, toluene, ethyl benzene and o-, m-, and p-xylene from contaminated soil and groundwater may permeate through thermoplastic pipes which are used for the conveyance of drinking water in water distribution systems. In this study, permeation parameters of benzene in 25 mm (1 inch) standard inside dimension ratio (SIDR) 9 high density polyethylene (HDPE) pipes were ...
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Although permeation of hydrocarbons such as Benzene, Toluene, Ethybenzene, and Xylene (BTEX) through polyethylene (PE) pipe in potable water applications is rarely occurred. It is important to understand permeation mechanism and characterize the potential health risk. The most common potential hydrocarbon substances are originated from gasoline leaks. Previous research has shown that pipe mater...
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This paper focuses on the effects of the addition of an ionic liquid, 1-Allyl-3-butylimidazilium bis(trifluoromethane sulfonyl)imide ([ABIM]TFSI), which has a high affinity for benzene, into the poly(vinyl chloride) (PVC) membrane on the pervaporation characteristics of the removal of benzene from aqueous solutions of dilute benzene. When aqueous solutions of 100～500 ppm benzene were permeated ...
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A dechlorinating microbial enrichment culture designated TUT2264 was cultured with tetrachloroethene and then characterized for tetrachloroethene-dechlorination by culture-dependent and -independent methods. The fourth-transferred TUT2264 culture completely dechlorinated tetrachloroethene and trichloroethene, and accumulated more trans-1,2-dichloroethene than cis-1,2-dichloroethene. A real-time...
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Methyl iodide (CH3I) is the most abundant organo-iodine compound in the atmosphere and is influential in aerosol formation and tropospheric ozone depletion. It is used in the production of pesticides and pharmaceuticals and is also produced biogenically by marine algae and terrestrial vegetation and soils. Short and long-term methyl iodide exposure via inhalation can be harmful to humans. In or...
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