Effects of zeolite X on dissipation of hexazinone from agricultural waste waters in Western KenyaEffects of zeolite X on dissipation of hexazinone from agricultural waste waters in Western Kenya
Publication Date
2013Author
Agoro, David J
Kowenje, Chrispin O
Osewe, Joseph O
Osewe, Elly T
Ogunah, Joanne A
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Show full item recordAbstract/ Overview
Dissipation of hexazinone in Zeolite X treated wastewater followed pseudo first-order
kinetics giving a calculated half-life of 41 days compared to a half-life of 144 days in
untreated wastewater. The herbicide degraded faster (0.0067 h-1) in treated than in
nonzeolite-treated wastewater (0.0027 h-1) forming products A, B, C, D and E within the first
12 h. Zeolite X effectively catalyzed the formation of product A compared to the rest.
Calculated rate constants for formation of products A, B, D and E were: 8.33 x 10-4 h-1, 5.65
x 10-4 h-1, 5.52 x 10-4 h-1 and 1.38 x10-3 h-1 respectively in non-zeolite-treated
wastewater; and 3.988 x 10-3 h-1, 4.875 x 10-4 h-1, 4.745 x 10-4 h-1 and 2.82 x 10-3 h-1
respectively in zeolite-treated wastewater.
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- Department of Chemistry [326]