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Determining the fate and transport o...

University of Nevada, Las Vegas.

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Determining the fate and transport of the acrylamide monomer (AMD) in soil and groundwater systems.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Determining the fate and transport of the acrylamide monomer (AMD) in soil and groundwater systems./
作者:	Arrowood, Todd James.
面頁冊數:	123 p.
附註:	Advisers: Zhongbo Yu; Michael H. Young.
Contained By:	Masters Abstracts International47-01.
標題:	Environmental Sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1456326
ISBN:	9780549693222

Determining the fate and transport of the acrylamide monomer (AMD) in soil and groundwater systems.
Arrowood, Todd James.

Determining the fate and transport of the acrylamide monomer (AMD) in soil and groundwater systems. - 123 p.

Advisers: Zhongbo Yu; Michael H. Young.

Thesis (M.S.)--University of Nevada, Las Vegas, 2008.

Acrylamide (AMD) is a known animal and suspected human carcinogen and is used to produce polyacrylamide (PAM), which has been proposed as a technology for seepage control in unlined water delivery canals. Previous studies have not quantified the fate and transport of AMD in soil and groundwater systems. In this study, batch experiments and soil column tests (with and without microbial degradation) were conducted on three materials (control sand, gravelly sand and loam soil) to determine the Kd, retardation factor, the form of the sorption isotherm, and determine microbial degradation rates. Soil core tests from samples collected in canals were also conducted to simulate field-scale transport. A numerical model (HYDRUS-2D) was used to simulate a canal environment using the fate and transport parameters of AMD obtained in the laboratory. Results indicate a Freundlich-type sorption isotherm for AMD in the loam soil and a linear isotherm for the sandy material. Sorption values were 0--2.4% in all tests. Results for the soil column tests show that AMD is conservative in all three types of material tested. The bacteria column tests indicated that AMD was quickly degraded (half lives were less than 3 hours), though half lives for the canal column tests were longer (&sim;31 hours). Numerical modeling shows that AMD would not be detectable 25 meters from the canal, as long as initial AMD concentration is less than 6.65 ppb. Using PAM at concentrations of less than 13 ppm would inhibit detectable contamination of canal water.

ISBN: 9780549693222Subjects--Topical Terms:

676987
Environmental Sciences.

Determining the fate and transport of the acrylamide monomer (AMD) in soil and groundwater systems.
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520 $a Acrylamide (AMD) is a known animal and suspected human carcinogen and is used to produce polyacrylamide (PAM), which has been proposed as a technology for seepage control in unlined water delivery canals. Previous studies have not quantified the fate and transport of AMD in soil and groundwater systems. In this study, batch experiments and soil column tests (with and without microbial degradation) were conducted on three materials (control sand, gravelly sand and loam soil) to determine the Kd, retardation factor, the form of the sorption isotherm, and determine microbial degradation rates. Soil core tests from samples collected in canals were also conducted to simulate field-scale transport. A numerical model (HYDRUS-2D) was used to simulate a canal environment using the fate and transport parameters of AMD obtained in the laboratory. Results indicate a Freundlich-type sorption isotherm for AMD in the loam soil and a linear isotherm for the sandy material. Sorption values were 0--2.4% in all tests. Results for the soil column tests show that AMD is conservative in all three types of material tested. The bacteria column tests indicated that AMD was quickly degraded (half lives were less than 3 hours), though half lives for the canal column tests were longer (&sim;31 hours). Numerical modeling shows that AMD would not be detectable 25 meters from the canal, as long as initial AMD concentration is less than 6.65 ppb. Using PAM at concentrations of less than 13 ppm would inhibit detectable contamination of canal water.
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