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Graphene oxide triggers mass transfer limitations on the methanogenic activity of an anaerobic consortium with a particulate substrate

dc.contributor.authorBueno-López, José Iván
dc.contributor.authorRangel Méndez, José René
dc.contributor.authorAlatriste Mondragón, Felipe
dc.contributor.authorPérez Rodríguez, Fátima
dc.contributor.authorHernández Montoya, Virginia
dc.contributor.authorCervantes Carrillo, Francisco Javier
dc.date.accessioned2019-09-12T17:36:27Z
dc.date.available2019-09-12T17:36:27Z
dc.date.issued2018
dc.identifier.citationJ. Iván Bueno-López, J. Rene Rangel-Mendez, Felipe Alatriste-Mondragón, Fátima Pérez-Rodríguez, Virginia Hernández-Montoya, Francisco J. Cervantes, Graphene oxide triggers mass transfer limitations on the methanogenic activity of an anaerobic consortium with a particulate substrate, Chemosphere, Volume 211, 2018, Pages 709-716.
dc.identifier.urihttp://hdl.handle.net/11627/5206
dc.description.abstract"Graphene oxide (GO) is an emerging nanomaterial widely used in many manufacturing applications, which is frequently discharged in many industrial effluents eventually reaching biological wastewater treatment systems (WWTS). Anaerobic WWTS are promising technologies for renewable energy production through biogas generation; however, the effects of GO on anaerobic digestion are poorly understood. Thus, it is of paramount relevance to generate more knowledge on these issues to prevent that anaerobic WWTS lose their effectiveness for the removal of pollutants and for biogas production. The aim of this work was to assess the effects of GO on the methanogenic activity of an anaerobic consortium using a particulate biopolymer (starch) and a readily fermentable soluble substrate (glucose) as electron donors. The obtained results revealed that the methanogenic activity of the anaerobic consortium supplemented with starch decreased up to 23-fold in the presence of GO compared to the control incubated in the absence of GO. In contrast, we observed a modest improvement on methane production (>10% compared to the control lacking GO) using 5?mg of GO L?1 in glucose-amended incubations. The decrease in the methanogenic activity is mainly explained by wrapping of starch granules by GO, which caused mass transfer limitation during the incubation. It is suggested that wrapping is driven by electrostatic interactions between negatively charged oxygenated groups in GO and positively charged hydroxyl groups in starch. These results imply that GO could seriously hamper the removal of particulate organic matter, such as starch, as well as methane production in anaerobic WWTS."
dc.publisherElsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectGraphene oxide
dc.subjectStarch
dc.subjectAnaerobic digestion
dc.subjectMass transfer limitation
dc.subject.classificationINGENIERÍA Y TECNOLOGÍA DEL MEDIO AMBIENTE
dc.titleGraphene oxide triggers mass transfer limitations on the methanogenic activity of an anaerobic consortium with a particulate substrate
dc.typearticle
dc.identifier.doihttps://doi.org/10.1016/j.chemosphere.2018.08.001
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional