Treatment of wastewater from the dairy industry using electroflocculation and solid whey recovery.
The aim of this study was to investigate the efficiency of electroflocculation for the treatment of wastewater from the dairy industry and the recovery of solid whey. An electrochemical apparatus containing two aluminum or iron electrodes, a power source, an electroflocculation cell and magnetic sti...
| Publicado en: | Journal of Environmental Management Vol. 182; pp. 574 - 581 |
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| Autores principales: | , , , , , |
| Formato: | Artículo |
| Publicado: |
Academic Press Inc.
Nov2016
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=117799288&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 117799288 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 03014797 EMJ jtl: Journal of Environmental Management issn: 03014797 maglogo: N pubinfo: dt: Nov2016 vid: 182 pid: 735 pub: Academic Press Inc. artinfo: ui: 117799288 10.1016/j.jenvman.2016.08.022 ppf: 574 ppct: 7 formats: tig: atl: Treatment of wastewater from the dairy industry using electroflocculation and solid whey recovery. aug: au: Melchiors, Marina S. Piovesan, Mauricio Becegato, Vitor R. Becegato, Valter A. Tambourgi, Elias B. Paulino, Alexandre T. affil: Santa Catarina State University, Department of Food and Chemical Engineering, BR 282, Km 574, CEP: 89870-000, Pinhalzinho, SC, Brazil Santa Catarina State University, Graduate Program in Environmental Sciences, Av. Luis de Camões, 2090, Conta Dinheiro, CEP: 88520-000, Lages, SC, Brazil State University of Campinas, College of Chemical Engineering, Department of Chemical Engineering and Systems, Av. Albert Einstein, 500, CEP: 13083-852, Campinas, SP, Brazil su: Wastewater treatment Dairy industry Flocculation Whey processing Electrochemical apparatus sug: subj: Fluid Milk Manufacturing Sewage Treatment Facilities Cheese Manufacturing Butter, cheese, and dry and condensed dairy product manufacturing Wastewater treatment Dairy industry Flocculation Whey processing Electrochemical apparatus keyword: Dairy Electroflocculation Treatment Wastewater Water Whey Dairy Electroflocculation Treatment Wastewater Water Whey ab: The aim of this study was to investigate the efficiency of electroflocculation for the treatment of wastewater from the dairy industry and the recovery of solid whey. An electrochemical apparatus containing two aluminum or iron electrodes, a power source, an electroflocculation cell and magnetic stirring was employed. The following experimental conditions were monitored: electroflocculation time, initial pH of wastewater and applied potential intensity. Chemical oxygen demand, turbidity and final pH were the response variables. The chemical oxygen demand and turbidity decreased by employing aluminum or iron electrodes, applied potential intensity of 5 V, distance between two electrodes of 2 cm, 60 min electroflocculation time and initial wastewater pH of 5.0. The removal rates of organic matter based on the measure of chemical oxygen demand and turbidity when employing aluminum electrodes were 97.0 ± 0.02% and 99.6 ± 3.00 × 10 −4 %, respectively, with a final pH of 6.72. The removal rates of organic matter when employing iron electrodes were 97.4 ± 0.01% and 99.1 ± 1.00 × 10 −4 %, respectively, with a final pH of 7.38. In conclusion, electroflocculation is an excellent alternative for the dairy wastewater treatment in comparison to conventional treatment methods. The water used in food production and equipment washing is recovered with this method, resulting in a liquid that can be properly disposed. It is also possible to recover solid whey after electroflotation, which can then be used in the production of food supplements for humans and animals. Therefore, the dairy wastewater treatment process employing electroflocculation leads to sustainable food production. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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