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The use of gaseous ozone to remediat...

Luster-Teasley, Stephanie LaVerne.

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The use of gaseous ozone to remediate pyrene-contaminated soils: A study of byproduct production, environmental effects on remediation efforts, and scale-up.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	The use of gaseous ozone to remediate pyrene-contaminated soils: A study of byproduct production, environmental effects on remediation efforts, and scale-up./
作者:	Luster-Teasley, Stephanie LaVerne.
面頁冊數:	344 p.
附註:	Adviser: Susan Masten.
Contained By:	Dissertation Abstracts International64-05B.
標題:	Agriculture, Soil Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3092180

The use of gaseous ozone to remediate pyrene-contaminated soils: A study of byproduct production, environmental effects on remediation efforts, and scale-up.
Luster-Teasley, Stephanie LaVerne.

The use of gaseous ozone to remediate pyrene-contaminated soils: A study of byproduct production, environmental effects on remediation efforts, and scale-up. - 344 p.

Adviser: Susan Masten.

Thesis (Ph.D.)--Michigan State University, 2003.

Ozonation studies were performed in 15 cm soil columns to determine the affect various soil conditions would have on pyrene oxidation and the subsequent byproduct formation. The conditions evaluated included 0, 5%, and 10% soil moisture contents and the pH levels of 2, 6, and 8. Ozonation experiments were conducted in soils at 13°C and 25°C. A comparison of ozonation in freshly contaminated soils and soils contaminated with pyrene for 6 months were conducted to determine the effect soil age has on the ability to remediate soils with ozone. An ozonation system using a 3.5 foot column was also designed to evaluate the ozone transport model proposed by Hsu and Masten (1997).Subjects--Topical Terms:

1017824
Agriculture, Soil Science.

The use of gaseous ozone to remediate pyrene-contaminated soils: A study of byproduct production, environmental effects on remediation efforts, and scale-up.
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245 1 0 $a The use of gaseous ozone to remediate pyrene-contaminated soils: A study of byproduct production, environmental effects on remediation efforts, and scale-up.
300 $a 344 p.
500 $a Adviser: Susan Masten.
500 $a Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2337.
502 $a Thesis (Ph.D.)--Michigan State University, 2003.
520 $a Ozonation studies were performed in 15 cm soil columns to determine the affect various soil conditions would have on pyrene oxidation and the subsequent byproduct formation. The conditions evaluated included 0, 5%, and 10% soil moisture contents and the pH levels of 2, 6, and 8. Ozonation experiments were conducted in soils at 13°C and 25°C. A comparison of ozonation in freshly contaminated soils and soils contaminated with pyrene for 6 months were conducted to determine the effect soil age has on the ability to remediate soils with ozone. An ozonation system using a 3.5 foot column was also designed to evaluate the ozone transport model proposed by Hsu and Masten (1997).
520 $a Dry soil with high pH (pH 6, pH 8) resulted in the highest level of contaminant removal. In the presence of soil moisture, the reduction of pyrene concentrations in soil required longer treatment times compared to the dry soils. Temperature was determined to affect pyrene oxidation in the moisturized soils at pH 6 and pH 8. Pyrene removal in the moisturized soils improved when ozonated at 13°C. The colder temperature, however, appeared to harden the packed soil and inhibited gas flow through the soil. In the ozonation experiments for the aged soils, the percentage of pyrene reduction was found to be 3–4 times less in the aged soils compared to the freshly contaminated soils.
520 $a The pyrene ozonation byproducts produced in soil were consistent with the compounds produced from aqueous pyrene ozonation. The byproducts detected were phenanthrene-like and biphenyl-like with hydroxyl, aldehyde, and carboxylic acid functional groups.
520 $a Two synthesized ozonation byproducts, 2,2<super>′</super>,6,6<super> ′</super>-biphenyl tetraaldehyde and 2,2<super>′</super>,6,6<super> ′</super>-biphenyl tetra carboxylic acid, were evaluated using two toxicology assays. The first assay measured the potential for the compounds to block gap junctional intercellular communication (GJIC) using the scrape loading/dye transfer (SL/DT) assay. The second assay evaluated the ability for the compounds to affect neutrophil function by measuring the production of superoxide in a human cell line (HL60). 2,2<super>′</super>,6,6<super>′</super>-biphenyl tetraaldehyde was determined to show adverse effects in both toxicity analyses. 2,2<super>′</super>,6,6<super>′</super>-biphenyl tetra carboxylic acid did not exhibit any significant effect in either assays.
590 $a School code: 0128.
650 4 $a Agriculture, Soil Science. $3 1017824
650 4 $a Engineering, Environmental. $3 783782
650 4 $a Environmental Sciences. $3 676987
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