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Electrochemical oxidation of recalci...

Chu, Chieh-Sheng.

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Electrochemical oxidation of recalcitrant organic compounds.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Electrochemical oxidation of recalcitrant organic compounds./
作者:	Chu, Chieh-Sheng.
面頁冊數:	230 p.
附註:	Professor in charge: Chin-Pao Huang.
Contained By:	Dissertation Abstracts International56-12B.
標題:	Engineering, Civil. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9610485

Electrochemical oxidation of recalcitrant organic compounds.
Chu, Chieh-Sheng.

Electrochemical oxidation of recalcitrant organic compounds. - 230 p.

Professor in charge: Chin-Pao Huang.

Thesis (Ph.D.)--University of Delaware, 1995.

Groundwater clean-up technologies are in urgent need, because of growing restrictions on hazardous waste sites. The prevailing technologies such as pump and treat or cap and contain provide no ultimate solution for this problem. Catalytic oxidation of organic compounds, by the well known Fenton's reagent was considered as an alternative for in-situ remediation, recently. Hydrogen peroxide in the presence of ferrous ion or ferric ion produces hydroxyl radical which can oxidize most of the organics in minutes.Subjects--Topical Terms:

783781
Engineering, Civil.

Electrochemical oxidation of recalcitrant organic compounds.
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100 1 $a Chu, Chieh-Sheng. $3 1251090
245 1 0 $a Electrochemical oxidation of recalcitrant organic compounds.
300 $a 230 p.
500 $a Professor in charge: Chin-Pao Huang.
500 $a Source: Dissertation Abstracts International, Volume: 56-12, Section: B, page: 6649.
502 $a Thesis (Ph.D.)--University of Delaware, 1995.
520 $a Groundwater clean-up technologies are in urgent need, because of growing restrictions on hazardous waste sites. The prevailing technologies such as pump and treat or cap and contain provide no ultimate solution for this problem. Catalytic oxidation of organic compounds, by the well known Fenton's reagent was considered as an alternative for in-situ remediation, recently. Hydrogen peroxide in the presence of ferrous ion or ferric ion produces hydroxyl radical which can oxidize most of the organics in minutes.
520 $a However the limitations of Fenton's reagent, such as sludge, mixing and narrow pH range problems still restrict the practical application in the real world. The electro-Fenton's process, a refinement on the Fenton's oxidation, offers a promising alternative for the destruction of hazardous organics by catalytic oxidation.
520 $a The hydrogen peroxide is generated at the cathode by the reduction of dissolved oxygen. In the presence of ferrous ions, the hydrogen peroxide is converted to hydroxyl radicals. Like other advanced chemical oxidation processes, the electro-Fenton's process can oxidize the organic compounds with very high efficiency. The degradation of aromatic compounds (chlorophenols) and aliphatic compounds (perfluoro-octanoic acid) are explored to evaluate the feasibility. The results demonstrate that both group of compounds can be removed effectively.
520 $a A molecular based kinetic model has been proposed on the basis of concentration profiles and the deduced reaction pathway of 2-chlorophenol. The model suggests that 89% of degradation is due to the hydroxylation. Two hydroxylated products, 3-chlorocatechol (ortho form) and 2-chlorohydroquinone (para form), are the predominant intermediates. Ring cleavage proceeds through 3-chlorocatechol, which eventually degrades to acetic acid, formic acid and carbon dioxide.
520 $a The degradation of industrial grade ammonium perfluoro-octanoate (FC-143) was investigated. The compound concentration can be reduced from 50 ppm to 1 ppm within 30 minutes. The degradation proceeds via carbon skeleton cleavage and perfluoro-olefin hydroxylation. The final products in the head space are identified to be carbon dioxide, 1-hydrogen-pentadecafluoroheptane and perfluorobutanol. All of the products are volatile and will be dissipated from the aqueous phase into the air.
590 $a School code: 0060.
650 4 $a Engineering, Civil. $3 783781
650 4 $a Engineering, Sanitary and Municipal. $3 1018731
650 4 $a Environmental Sciences. $3 676987
690 $a 0543
690 $a 0554
690 $a 0768
710 2 0 $a University of Delaware. $3 1017826
773 0 $t Dissertation Abstracts International $g 56-12B.
790 $a 0060
790 1 0 $a Huang, Chin-Pao, $e advisor
791 $a Ph.D.
792 $a 1995
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9610485