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Removal of Cr(VI) from wastewaters at semi-industrial electrochemical reactors with rotating ring electrodes.
J Hazard Mater. 2009 Apr 30; 163(2-3):1221-9.JH

Abstract

In Mexico, most of the electroplating and textile industries are small facilities and release relatively large amounts of hexavalent chromium (Cr(VI)) in surface waters. In this work, the results obtained during the operation of a batch reactor with a capacity of 170 L, and three electrochemical flow reactors-in-series system with a total capacity of 510 L (both using iron rotating ring electrodes to remove Cr(VI) from wastewaters) are presented. The reactors were scaled up from a laboratory reactor to a semi-industrial level, based on the similarity (dynamical, geometrical and electrochemical). An empirical Cr(VI) removal model was validated in batch and continuous reactors at different operating conditions. Cr(VI) concentration of the industrial wastewaters was reduced from about 500 mg/L to values lower than 0.5mg/L. A very important parameter that affects the process is the pH, which affects the solubility of the Fe(III). Finally, the electrochemical treated wastewater can be reused.

Authors+Show Affiliations

Departamento Energía, Universidad Autónoma Metropolitana-Azcapotzalco, Av. San Pablo 180, Azcapotzalco, CP 07740, México D.F., Mexico.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18775602

Citation

Rodríguez R, Miriam G., et al. "Removal of Cr(VI) From Wastewaters at Semi-industrial Electrochemical Reactors With Rotating Ring Electrodes." Journal of Hazardous Materials, vol. 163, no. 2-3, 2009, pp. 1221-9.
Rodríguez R MG, Mendoza V, Puebla H, et al. Removal of Cr(VI) from wastewaters at semi-industrial electrochemical reactors with rotating ring electrodes. J Hazard Mater. 2009;163(2-3):1221-9.
Rodríguez R, M. G., Mendoza, V., Puebla, H., & Martínez D, S. A. (2009). Removal of Cr(VI) from wastewaters at semi-industrial electrochemical reactors with rotating ring electrodes. Journal of Hazardous Materials, 163(2-3), 1221-9. https://doi.org/10.1016/j.jhazmat.2008.07.114
Rodríguez R MG, et al. Removal of Cr(VI) From Wastewaters at Semi-industrial Electrochemical Reactors With Rotating Ring Electrodes. J Hazard Mater. 2009 Apr 30;163(2-3):1221-9. PubMed PMID: 18775602.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of Cr(VI) from wastewaters at semi-industrial electrochemical reactors with rotating ring electrodes. AU - Rodríguez R,Miriam G, AU - Mendoza,Víctor, AU - Puebla,Héctor, AU - Martínez D,Sergio A, Y1 - 2008/08/05/ PY - 2008/06/10/received PY - 2008/07/19/revised PY - 2008/07/21/accepted PY - 2008/9/9/pubmed PY - 2009/4/14/medline PY - 2008/9/9/entrez SP - 1221 EP - 9 JF - Journal of hazardous materials JO - J Hazard Mater VL - 163 IS - 2-3 N2 - In Mexico, most of the electroplating and textile industries are small facilities and release relatively large amounts of hexavalent chromium (Cr(VI)) in surface waters. In this work, the results obtained during the operation of a batch reactor with a capacity of 170 L, and three electrochemical flow reactors-in-series system with a total capacity of 510 L (both using iron rotating ring electrodes to remove Cr(VI) from wastewaters) are presented. The reactors were scaled up from a laboratory reactor to a semi-industrial level, based on the similarity (dynamical, geometrical and electrochemical). An empirical Cr(VI) removal model was validated in batch and continuous reactors at different operating conditions. Cr(VI) concentration of the industrial wastewaters was reduced from about 500 mg/L to values lower than 0.5mg/L. A very important parameter that affects the process is the pH, which affects the solubility of the Fe(III). Finally, the electrochemical treated wastewater can be reused. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/18775602/Removal_of_Cr_VI__from_wastewaters_at_semi_industrial_electrochemical_reactors_with_rotating_ring_electrodes_ DB - PRIME DP - Unbound Medicine ER -