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Coupling digestion in a pilot-scale UASB reactor and electrochemical oxidation over BDD anode to treat diluted cheese whey

Katsoni Athanasia, Mantzavinos Dionysis, Diamantopoulos Evaggelos

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URIhttp://purl.tuc.gr/dl/dias/4BBEA9BF-61F6-4F0A-91F7-64AB844D8F67-
Identifierhttps://doi.org/10.1007/s11356-014-2960-2-
Identifierhttps://link.springer.com/article/10.1007/s11356-014-2960-2-
Languageen-
Extent12 pagesen
TitleCoupling digestion in a pilot-scale UASB reactor and electrochemical oxidation over BDD anode to treat diluted cheese wheyen
CreatorKatsoni Athanasiaen
CreatorΚατσωνη Αθανασιαel
CreatorMantzavinos Dionysisen
CreatorΜαντζαβινος Διονυσηςel
CreatorDiamantopoulos Evaggelosen
CreatorΔιαμαντοπουλος Ευαγγελοςel
PublisherSpringer Verlagen
Content SummaryThe efficiency of the anaerobic treatment of cheese whey (CW) at mesophilic conditions was investigated. In addition, the applicability of electrochemical oxidation as an advanced post-treatment for the complete removal of chemical oxygen demand (COD) from the anaerobically treated cheese whey was evaluated. The diluted cheese whey, having a pH of 6.5 and a total COD of 6 g/L, was first treated in a 600-L, pilot-scale up-flow anaerobic sludge blanket (UASB) reactor. The UASB process, which was operated for 87 days at mesophilic conditions (32 ± 2 °C) at a hydraulic retention time (HRT) of 3 days, led to a COD removal efficiency between 66 and 97 %, while the particulate matter of the wastewater was effectively removed by entrapment in the sludge blanket of the reactor. When the anaerobic reactor effluent was post-treated over a boron-doped diamond (BDD) anode at 9 and 18 A and in the presence of NaCl as the supporting electrolyte, complete removal of COD was attained after 3–4 h of reaction. During electrochemical experiments, three groups of organochlorinated compounds, namely trihalomethanes (THMs), haloacetonitriles (HANs), and haloketons (HKs), as well as 1,2-dichloroethane (DCA) and chloropicrin were identified as by-products of the process; these, alongside free chlorine, are thought to increase the matrix ecotoxicity to Artemia salina.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-11-19-
Date of Publication2014-
SubjectEnvironmental scienceen
SubjectPollution researchen
Bibliographic CitationΑ. Katsoni, D. Mantzavinos and E. Diamadopoulos, "Coupling digestion in a pilot-scale UASB reactor and electrochemical oxidation over BDD anode to treat diluted cheese whey," Environ. Sci. Pollut. Res., vol. 21, no. 21, pp. 12170-12181, Sep. 2014. doi: 10.1007/s11356-014-2960-2el

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