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20 ADVANCED CHEMICAL OXIDATION AND TOXICITY REDUCTION OF 2,4,6 -TRICHLOROPHENOL BY USING FENTON'S REAGENT - PART III: A COMPARISON WITH UV - PEROXIDE TREATMENT Somnath Basu, Program Manager Deer Island Treatment Plant Massachusetts Water Resources Authority Winthrop, Massachusetts 02152 Venkat Sreenivasan, Master's Student Department of Civil & Environmental Engineering Northeastern University Boston, Massachusetts 02115 Irvine W. Wei, Associate Professor Department of Civil & Environmental Engineering Northeastern University Boston, Massachusetts 02115 INTRODUCTION Removal of hazardous organic chemicals dissolved in groundwater or industrial wastewater poses a major environmental problem. Commonly used physical separation techniques; e.g., air stripping, carbon adsorption, etc., are not permanent solutions because they are only phase transformative. Eventually, the gaseous or solid phases into which the organic molecules concentrate have to be properly cleaned up and disposed of. Biological oxidation of organic compounds has been the traditional technique of wastewater treatment. But many substances, in industrial wastewaters particularly, resist biodegradation and may even be biocides. Moreover, in groundwater, there may be organics in concentrations so low that they may not be able to sustain biological growth. The liquid phase chemical oxidative treatment is one of the most common techniques for destruction of organic pollutants in water. Chlorine, ozone, hydrogen peroxide, etc., are among the commonly used chemical oxidants. Chlorine, in various oxidation states, is extensively used in municipal water and wastewater treatment. It has these major disadvantages—handling of chlorine in treatment plants is hazardous, and chlorine also may form various chlorinated organic byproducts, including THMs, that are themselves hazardous organic chemicals. Lately, advanced oxidation processes (AOP) involving treatment by ozone, UV-hydrogen peroxide, and metal ion catalyzed peroxide, have received widespread attention from the scientific and engineering community because they break down complex organic compounds into simpler oxidized molecules, amenable to biotreatment by conventional wastewater treatment processes. In many cases, a good part of the breakdown reactions proceed all the way to complete oxidation. They all generate highly energized hydroxyl radicals, which act as the oxidant of the complex organic compounds. UV-peroxide treatment was effectively utilized on a laboratory scale to degrade several chlorinated aliphatic hydrocarbons, including DCE, TCE, TCA, PCE, etc.,1 and also aromatic hydrocarbons, including chlorinated phenols. The reaction kinetics of individual pure compounds were studied, and also an attempt was made to identify the reaction products. A successful pilot- 51st Purdue Industrial Waste Conference Proceedings. 1996, Ann Arbor Press. Inc., Chelsea, Michigan 48118. Printed in U.S.A. 175
Object Description
Purdue Identification Number | ETRIWC199620 |
Title | Advanced chemical oxidation and toxicity reduction of 2,4,6-trichlorophenol by using Fenton's reagent. Part III, A comparison with UV-peroxide treatment |
Author |
Basu, Somnath Sreenivasan, Venkat Wei, Irvine W. |
Date of Original | 1996 |
Conference Title | Proceedings of the 51st Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,46351 |
Extent of Original | p. 175-186 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital object copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Date Digitized | 2009-10-27 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 175 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Transcript | 20 ADVANCED CHEMICAL OXIDATION AND TOXICITY REDUCTION OF 2,4,6 -TRICHLOROPHENOL BY USING FENTON'S REAGENT - PART III: A COMPARISON WITH UV - PEROXIDE TREATMENT Somnath Basu, Program Manager Deer Island Treatment Plant Massachusetts Water Resources Authority Winthrop, Massachusetts 02152 Venkat Sreenivasan, Master's Student Department of Civil & Environmental Engineering Northeastern University Boston, Massachusetts 02115 Irvine W. Wei, Associate Professor Department of Civil & Environmental Engineering Northeastern University Boston, Massachusetts 02115 INTRODUCTION Removal of hazardous organic chemicals dissolved in groundwater or industrial wastewater poses a major environmental problem. Commonly used physical separation techniques; e.g., air stripping, carbon adsorption, etc., are not permanent solutions because they are only phase transformative. Eventually, the gaseous or solid phases into which the organic molecules concentrate have to be properly cleaned up and disposed of. Biological oxidation of organic compounds has been the traditional technique of wastewater treatment. But many substances, in industrial wastewaters particularly, resist biodegradation and may even be biocides. Moreover, in groundwater, there may be organics in concentrations so low that they may not be able to sustain biological growth. The liquid phase chemical oxidative treatment is one of the most common techniques for destruction of organic pollutants in water. Chlorine, ozone, hydrogen peroxide, etc., are among the commonly used chemical oxidants. Chlorine, in various oxidation states, is extensively used in municipal water and wastewater treatment. It has these major disadvantages—handling of chlorine in treatment plants is hazardous, and chlorine also may form various chlorinated organic byproducts, including THMs, that are themselves hazardous organic chemicals. Lately, advanced oxidation processes (AOP) involving treatment by ozone, UV-hydrogen peroxide, and metal ion catalyzed peroxide, have received widespread attention from the scientific and engineering community because they break down complex organic compounds into simpler oxidized molecules, amenable to biotreatment by conventional wastewater treatment processes. In many cases, a good part of the breakdown reactions proceed all the way to complete oxidation. They all generate highly energized hydroxyl radicals, which act as the oxidant of the complex organic compounds. UV-peroxide treatment was effectively utilized on a laboratory scale to degrade several chlorinated aliphatic hydrocarbons, including DCE, TCE, TCA, PCE, etc.,1 and also aromatic hydrocarbons, including chlorinated phenols. The reaction kinetics of individual pure compounds were studied, and also an attempt was made to identify the reaction products. A successful pilot- 51st Purdue Industrial Waste Conference Proceedings. 1996, Ann Arbor Press. Inc., Chelsea, Michigan 48118. Printed in U.S.A. 175 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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