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dc.contributor.authorMontalvo, Silvio-
dc.contributor.authorHuiliñir, César-
dc.contributor.authorBorja Padilla, Rafael-
dc.contributor.authorCastillo, Alejandro-
dc.contributor.authorPereda, Ileana-
dc.identifierdoi: 10.1080/10934529.2019.1623597-
dc.identifierissn: 1532-4117-
dc.identifier.citationJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering 54 (10): 1035-1043 (2019)-
dc.description.abstractThis work explores the effect of two metallic wastes (mining wastes, MW; fly ashes, FA) and micro-aeration (MA) on the anaerobic digestion of wastewater which is rich in sulfate and sulfide. Two initial COD concentrations (5,000 and 10,000 mg/L) were studied under both conditions in batch systems at 35 °C, with a fixed COD/SO ratio = 10, with 100 mg/L of S. It was observed that the use of MW and FA in the assays with an initial COD concentration of 10,000 mg/L resulted in a simultaneous increase in COD removal, sulfate removal, sulfide removal and methane generation, while MA only improved the COD and sulfide removals in comparison with the control system. On the contrary, the use of MW, FA or MA in systems with initial COD concentrations equal to or lower than 5,000 mg/L did not show any improvement with respect to the control system in terms of COD removal, sulfate removal or methane generation, with only sulfide removal being positively affected by MW and FA.-
dc.description.sponsorshipThe authors would like to acknowledge the financial support provided by Universidad de Santiago of Chile under project DICYT No. 091711MM and the grant “Becas Iberoamerica. Jóvenes Profesores e Investigadores, Santander Universidades Convocatoria 2017” received by César Huiliñir Curío.-
dc.publisherTaylor & Francis-
dc.subjectSulfide removal-
dc.subjectFly ashes-
dc.subjectAnaerobic digestion-
dc.subjectMining wastes-
dc.titleAnaerobic digestion of wastewater rich in sulfate and sulfide: effects of metallic waste addition and micro-aeration on process performance and methane production-
dc.description.versionPeer Reviewed-
dc.contributor.funderUniversidad de Santiago de Chile-
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