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Abiotic reductive dechlorination of ...

Lee, Woojin.

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Abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil./
Author:	Lee, Woojin.
Description:	249 p.
Notes:	Chair: Bill Batchelor.
Contained By:	Dissertation Abstracts International62-07B.
Subject:	Engineering, Environmental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3020075
ISBN:	0493313877

Abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil.
Lee, Woojin.

Abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil. - 249 p.

Chair: Bill Batchelor.

Thesis (Ph.D.)--Texas A&M University, 2001.

The research on abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil has been conducted to provide the fundamental knowledge that could be applied for the better operation of in-situ and ex-situ treatment processes and development of effective and cost-efficient remedial technologies.

ISBN: 0493313877Subjects--Topical Terms:

783782
Engineering, Environmental.

Abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil.
LDR:03553nam 2200325 a 45 001 936458
005 20110510
008 110510s2001 eng d
020 $a 0493313877
035 $a (UnM)AAI3020075
035 $a AAI3020075
040 $a UnM $c UnM
100 1 $a Lee, Woojin. $3 1260148
245 1 0 $a Abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil.
300 $a 249 p.
500 $a Chair: Bill Batchelor.
500 $a Source: Dissertation Abstracts International, Volume: 62-07, Section: B, page: 3334.
502 $a Thesis (Ph.D.)--Texas A&M University, 2001.
520 $a The research on abiotic reductive dechlorination of chlorinated ethylenes by soil minerals and soil has been conducted to provide the fundamental knowledge that could be applied for the better operation of in-situ and ex-situ treatment processes and development of effective and cost-efficient remedial technologies.
520 $a The reductive capacity of iron-bearing soil minerals and soil was an important characteristic to significantly affect degradation kinetics of target compounds. It appeared to be influenced by Fe(II) and reduced NOM in the soil minerals and soil. Iron-bearing soil minerals had consistent reductive capacities independent of contaminant type.
520 $a Reductive dechlorination of chlorinated ethylenes by iron-bearing soil minerals and soil was characterized using batch reactors. The dechlorination kinetics of chlorinated ethylenes was properly described by a modified Langmuir-Hinshelwood kinetic model. Pyrite, GRSO4, and magnetite were more reactive than iron-bearing phyllosilicates but less reactive than Zn(0), mackinawite, and troilite in the reductive dechlorination of chlorinated ethylenes. The transformation products of chlorinated ethylenes were C hydrocarbons and chloride with small amounts of chlorinated intermediates, which suggests that the main transformation pathway for PCE, TCE, and c-DCE is reductive elimination and that for VC is hydrogenolysis. Fe(II) addition increased the reactivity of soil minerals indicating potential interactions between biotic and abiotic processes in reductive dechlorination. The corrected rate constants of TCE in GRSO4 and biotite suspensions were independent of solid concentration and target organic concentration but influenced by pH and sorbed Fe(II).The sorption coefficients were independent of all factors but initial reductive capacities were significantly affected by them. The oxidation product of GR SO4 during the reaction with TCE may be magnetite and/or maghemite.
520 $a The application of abiotic reductive dechlorination of chlorinated ethylenes was demonstrated in soil suspensions. The dechlorination rates of chlorinated ethylenes by reduced soils were relatively similar to those by pyrite. C 2 hydrocarbons and chloride were main transformation products by the reduced soils. The recoveries of TCE by reduced soils were constant during the five cycles of reduction/oxidation suggesting that semi-continuous use of the soils as reductants is possible. They decreased in the order: Fe(II) > dithionite > Fe(II) + dithionite indicating Fe(II) + dithionite treatment is most reactive.
590 $a School code: 0803.
650 4 $a Engineering, Environmental. $3 783782
650 4 $a Environmental Sciences. $3 676987
650 4 $a Geochemistry. $3 539092
690 $a 0768
690 $a 0775
690 $a 0996
710 2 0 $a Texas A&M University. $3 718977
773 0 $t Dissertation Abstracts International $g 62-07B.
790 $a 0803
790 1 0 $a Batchelor, Bill, $e advisor
791 $a Ph.D.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3020075