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dc.contributor.authorPeirano, Clioes_ES
dc.contributor.authorGuerrero, Lornaes_ES
dc.contributor.authorBarahona, Andreaes_ES
dc.contributor.authorMontalvo, Silvioes_ES
dc.contributor.authorHuiliñir, Césares_ES
dc.contributor.authorDa Silva, Cristopheres_ES
dc.contributor.authorBorja Padilla, Rafaeles_ES
dc.date.accessioned2020-02-18T10:15:37Z-
dc.date.available2020-02-18T10:15:37Z-
dc.date.issued2020-03-
dc.identifier.citationJournal of Chemical Technology and Biotechnology 95 (3): 631-638 (2020)es_ES
dc.identifier.issn0268-2575-
dc.identifier.urihttp://hdl.handle.net/10261/201058-
dc.description5 Figuras.-- 2 Tablases_ES
dc.description.abstractBACKGROUND Some liquid industrial wastes are rich in sulfur (S), nitrogen (N) and organic matter, causing eutrophication of lakes and rivers. These wastes also are highly toxic to aquatic organisms and pose serious health problems. Biological N removal is performed by denitrification. Heterotrophic denitrifiers oxidize organic matter to CO2 gas and reduce nitrate (NO3−) to N2 gas, whereas autotrophic denitrifiers oxidize reduced S compounds by reducing nitrate. Thus, a simultaneous denitrification process will allow for the removal of all these elements. RESULTS A response surface methodology (RSM) was used to analyze the effects of the ratios heterotrophic:autotrophic bacteria (H:A, 0.2–1.9), the molar Ac−(Acetate):NO3− (0.2–1.05) and thiosulfate (S2O32−):NO3− (0.15–1.1) on the denitrification process. The highest concentrations of sulfate were obtained with H:A = 0.2; Ac−: NO3− = 1.05 and S2O32−:NO3− = 0.91. CONCLUSION High NO3− (average 95.0 ± 3.3%) removals were obtained in all experiments, the optimal values predicted by the RSM were obtained at H:A = 0.54, Ac−:NO3− = 1.05 and S2O32−:NO3− = 0.41. When analyzing the removal of Ac−, the recommended optimal operating values were: Ac−:NO3− = 1.05; H:A = 0.37 and S2O32−:NO3− = 0.8–0.9. © 2019 Society of Chemical Industryes_ES
dc.description.sponsorshipFondo Nacional de Desarrollo Científico y Tecnológico. Grant Number: 1130108es_ES
dc.language.isoenges_ES
dc.publisherJohn Wiley & Sonses_ES
dc.rightsembargoedAccesses_ES
dc.subjectAutotrophic denitrificationes_ES
dc.subjectHeterotrophic denitrificationes_ES
dc.subjectResponse surface methodology (RSM)es_ES
dc.subjectSimultaneous sulfur and carbon removales_ES
dc.titleAssessment of simultaneous autotrophic–heterotrophic denitrification with high removal of nitrogen, sulfur and carbon: optimization through response surface methodologyes_ES
dc.typeartículoes_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1002/jctb.6244es_ES
dc.identifier.e-issn1097-4660-
dc.contributor.funderGobierno de Chilees_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
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