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CATALYTIC OXIDATION OF MALODOROUS COMPOUNDS FROM PULP AND PAPER MILLS WITH OZONE AS AN OXIDANT
Citation:
SAHLE-DEMESSIE, E. AND V. DEVULAPELLI. CATALYTIC OXIDATION OF MALODOROUS COMPOUNDS FROM PULP AND PAPER MILLS WITH OZONE AS AN OXIDANT. Presented at 39th Central Regional Meeting (CERMACS), Covington, KY, May 21 - 23, 2007.
Impact/Purpose:
To inform the public
Description:
Total reduced sulfer (TRS) compounds such as dimethyl sulfide, dimethyl disulfide, methanethiol and H2S are identified as major constituents of pulp and paper mill blow tank effluents. TRS compounds are calodorous and can have potentially serious impacts on environmental quality and human health. The two general approaches implemented in kraft mills to abate odor are thermal oxidation and absorption using scrubbing technologies. However, these methods either require high temperature or need of large amounts of absorbents. Ozone is a clean oxidant with high oxidation potential, and it's use for emission control has opened a new low temperature reaction means which can not be acheived with molecular oxygen. The previous studies reported in the literature high conversions of TRS compounds; however produces large amounts of partial oxidation products and shows catalyst deactivation due to sulfure poisoning. The objective of this study is to completely mineralize DMS to carbon dioxide and sulfer dioxide.