The toxicity of a mixture of polychlorinated aliphatic compounds towards an unacclimated methanogenic consortium was assayed in carrier-free, continuously-stirred batch experiments. Results obtained indicate that a 50 % inhibition of methanogenesis occurs at 3.3 mg toxic mixture per litre mixed liquor and that at 100 mg toxic mixture per litre mixed liquor, the inhibition of methanogenesis is complete.
Renard, P., Bouillon, C., Naveau, H., & Nyns, E.-J. (1993). Toxicity of a Mixture of Polychlorinated Organic-compounds Towards An Unacclimated Methanogenic Consortium. Biotechnology Letters, 15(2), 195-200. https://doi.org/10.1007/BF00133023 (Original work published 1993)