{"id":1637,"date":"2017-05-27T10:48:57","date_gmt":"2017-05-27T15:48:57","guid":{"rendered":"http:\/\/www.oxidationtech.com\/blog\/?p=1637"},"modified":"2017-05-20T11:00:57","modified_gmt":"2017-05-20T16:00:57","slug":"ozone-oxidation-mtbe-etbe","status":"publish","type":"post","link":"https:\/\/www.oxidationtech.com\/blog\/ozone-oxidation-mtbe-etbe\/","title":{"rendered":"Ozone oxidation of MTBE and ETBE evaluated"},"content":{"rendered":"

Ozone is commonly used to remove MTBE from groundwater and drinking water <\/a>when MTBE is found in high levels. \u00a0Ozone is a viable option as ozone oxidizes MTBE rapidly from water, and completely after by-products are also oxidized. \u00a0 Below paper gives great details\u00a0on this process.<\/span><\/p>\n

\"MTBE
MTBE<\/figcaption><\/figure>\n
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Oxidation of Methyl tert-Butyl Ether (MTBE) and Ethyl tert-Butyl Ether (ETBE) by Ozone and Combined Ozone\/Hydrogen Peroxide<\/span><\/h2>\n<\/div>\n
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Courtesy of: \u00a0Ozone: Science & Engineering\u00a0<\/a>\u00a0The Journal of the International Ozone Association<\/em><\/strong><\/p>\n

\"Ozone
IOA Journal<\/figcaption><\/figure>\n

Authors:\u00a0N. Karpel Vel Leitner\u00a0<\/a>,A.-L. Papailhou\u00a0<\/a>,J.-P. Crou\u00e9\u00a0<\/a>,J. Peyrot\u00a0<\/a>&\u00a0M. Dor\u00e9<\/a><\/p>\n

Received 21 Jul 1993, Accepted 12 Oct 1993, Published online: 23 Jul 2008<\/p>\n

Abstract<\/b><\/h2>\n

The aim of this work was to study the reaction of ozone and combined ozone\/hydrogen peroxide on oxygenated additives such as methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) in dilute aqueous solution using controlled experimental conditions. Experiments conducted in a semi-continuous reactor with MTBE and ETBE in combination (initial concentration: 2 mmol\/L of each) showed that ETBE was better eliminated than MTBE with both ozone and combined O3\/H2O2. Batch experiments led to the determination of the ratio of the kinetic constants for the reaction of OH\u00b0-radical with MTBE and ETBE [kOH\u00b0\/ETBE\/kOH\u00b0\/MTBE\u00a0= 1.7). Tert-butyl formate and tert-butyl acetate were identified as the ozonation byproducts of MTBE and ETBE, respectively, while tert-butyl alcohol was found to be produced during the ozonation of both compounds.<\/p>\n

Link to access full paper below:<\/strong><\/p>\n

http:\/\/www.tandfonline.com\/doi\/abs\/10.1080\/01919519408552379<\/a><\/p>\n

Become a member of the IOA and receive the Ozone Science & Engineering Journal in the mail, and full online access:<\/strong><\/p>\n

http:\/\/www.ioa-pag.org\/membership\/<\/a><\/p>\n

MTBE Removal Success<\/span><\/h2>\n<\/div>\n

Ozone has proven to be successful\u00a0at oxidizing MTBE in water<\/a>. \u00a0Ozone rapidly oxidizes MTBE, however, TBA (tert-Butyl alcohol) is formed as a by-product of this oxidation. \u00a0TBA is then oxidized by ozone, but at a slower rate than MTBE. \u00a0See chart directly below for a great example:<\/p>\n

\"MTBE<\/a><\/p>\n

Image from: Chemical Oxidation of MTBE and TBA<\/a><\/em><\/p>\n

The chart above shows a great example of MTBE removal in water with only MTBE and TBA data shown. \u00a0As MTBE was oxidized, TBA was created at the same rate. \u00a0After MTBE oxidation was nearly complete TBA oxidation started to occur, but at a slower rate. \u00a0TBA will also be completely oxidized from water with ozone over time. \u00a0Ozone remains a great option for oxidation due to the rapid oxidation of MTBE and complete destruction of both MTBE and TBA with no harmful by-products left in the water.<\/p>\n

Additional Technical Documents:<\/span><\/h2>\n

Below is a series of papers and documents outlining practical and laboratory success in the elimination of MTBE from water using ozone, or ozone AOP processes.<\/p>\n