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An investigation of a photochemical ...

Dhol, Arvinder S.

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An investigation of a photochemical approach for the remediation of PCB-contaminated soils.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	An investigation of a photochemical approach for the remediation of PCB-contaminated soils./
作者:	Dhol, Arvinder S.
面頁冊數:	260 p.
附註:	Source: Masters Abstracts International, Volume: 44-01, page: 0444.
Contained By:	Masters Abstracts International44-01.
標題:	Engineering, Civil. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR03710
ISBN:	9780494037102

An investigation of a photochemical approach for the remediation of PCB-contaminated soils.
Dhol, Arvinder S.

An investigation of a photochemical approach for the remediation of PCB-contaminated soils. - 260 p.

Source: Masters Abstracts International, Volume: 44-01, page: 0444.

Thesis (M.Sc.)--University of Calgary (Canada), 2005.

The aim of this research study was to develop a lab-scale PCB remediation approach, for contaminated soils and sediments, which would lead to the field-scale implementation of a lower risk, more cost-effective remediation alternative than thermal incineration. A thorough literature review was conducted to study PCB remediation technologies attempted to date, after which PCB photodegradation (employing ultraviolet light) surfaced as the most promising.

ISBN: 9780494037102Subjects--Topical Terms:

783781
Engineering, Civil.

An investigation of a photochemical approach for the remediation of PCB-contaminated soils.
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245 1 3 $a An investigation of a photochemical approach for the remediation of PCB-contaminated soils.
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502 $a Thesis (M.Sc.)--University of Calgary (Canada), 2005.
520 $a The aim of this research study was to develop a lab-scale PCB remediation approach, for contaminated soils and sediments, which would lead to the field-scale implementation of a lower risk, more cost-effective remediation alternative than thermal incineration. A thorough literature review was conducted to study PCB remediation technologies attempted to date, after which PCB photodegradation (employing ultraviolet light) surfaced as the most promising.
520 $a Initially, experiments were conducted with a two-pronged approach, geared towards developing effective methods to extract Aroclor 1254 (a commercial mixture of higher chlorinated PCB congeners) from weathered soils, while simultaneously studying the effects of UV irradiation on aqueous-phase samples spiked with Aroclor 1254. A combination of the two processes was then used to investigate the sequential chemical extraction and UV photodegradation of Aroclor 1254 from contaminated field soils and sediments. Attempts were finally made to examine the presence of end products generated by the sequential treatment process.
520 $a The results of this research provide the strongest support for the extraction of Aroclor 1254 from weathered soil using a multi-cycle, shake extraction approach (at ambient temperature) with neutral isopropanol (IPA), followed by 254nm UV photodegradation in an alkaline isopropanol environment. Greater than 90% PCB extraction efficiency was achieved using this approach on weathered soil, and more than 95% of the extracted PCBs could be photodegraded within just 1h of UV irradiation. The primary end product generated from this hybrid treatment process was identified as biphenyl, the concentration of which was found to decrease with extended irradiation. Experimental results also indicated that photochemical remediation could be successfully applied to the wet soils and sediments, typically encountered at Canadian industrial sites. (Abstract shortened by UMI.)
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