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Stams, A.J.M. (author), Huisman, J. (author), Garcia Encia, P.A. (author), Muyzer, G. (author)Citrate-containing wastewater is used as electron donor for sulfate reduction in a biological treatment plant for the removal of sulfate. The pathway of citrate conversion coupled to sulfate reduction and the microorganisms involved were investigated. Citrate was not a direct electron donor for the sulfate-reducing bacteria. Instead, citrate was...journal article 2009