Methanogenic inhibition by arsenic compounds |
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| Authors: | Sierra-Alvarez Reyes Cortinas Irail Yenal Umur Field Jim A |
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| Institution: | Department of Chemical and Environmental Engineering, University of Arizona, P.O. Box 210011, Tucson, AZ 85721-0011, USA. Rsierra@email.arizona.edu |
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| Abstract: | The acute acetoclastic methanogenic inhibition of several inorganic and organic arsenicals was assayed. Trivalent species, i.e., methylarsonous acid and arsenite, were highly inhibitory, with 50% inhibitory concentrations of 9.1 and 15.0 microM, respectively, whereas pentavalent species were generally nontoxic. The nitrophenylarsonate derivate, roxarsone, displayed moderate toxicity. |
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