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Purification of chromium(VI) finishing wastewaters using calcined and uncalcined Mg-Al-CO3-hydrotalcite.
Water Res. 2005 Jul; 39(12):2535-42.WR

Abstract

The applicability of calcined and uncalcined hydrotalcite for the purification of industrial effluents has been studied using chromium finishing wastewaters. Using a batch method, the influence of the initial concentration of chromium (10-450mg/l), hydrotalcite (HT) dose (0.5-5g/l) and time (0.5-72h) has been evaluated. The process could be described by the Langmuir model and gave a maximum removal of chromium of 16.3mg Cr(VI)/g on uncalcined HT and 128mg Cr(VI)/g on calcined hydrotalcite (C-HT). Removal using the calcined product provided an effective system to treat chromium finishing wastewaters with the most stringent discharge limit for such industrial streams being achieved with between two and four consecutive removal cycles on C-HT at a dose of 2g/l.

Authors+Show Affiliations

Alvarez-Ayuso E
Department of Chemical Technology, Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, 2638 BL Delft, The Netherlands. e.alvarez@tnw.tudelft.nl
Nugteren HW
No affiliation info available

MeSH

AdsorptionAluminum HydroxideCarbonatesChromiumConservation of Natural ResourcesIndustrial WasteMagnesium HydroxideSpectroscopy, Fourier Transform InfraredTime FactorsWaste Disposal, FluidWater PollutantsWater Purification

Pub Type(s)

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

Language

eng

PubMed ID

15993462

Citation

Alvarez-Ayuso, E, and H W. Nugteren. "Purification of chromium(VI) Finishing Wastewaters Using Calcined and Uncalcined Mg-Al-CO3-hydrotalcite." Water Research, vol. 39, no. 12, 2005, pp. 2535-42.
Alvarez-Ayuso E, Nugteren HW. Purification of chromium(VI) finishing wastewaters using calcined and uncalcined Mg-Al-CO3-hydrotalcite. Water Res. 2005;39(12):2535-42.
Alvarez-Ayuso, E., & Nugteren, H. W. (2005). Purification of chromium(VI) finishing wastewaters using calcined and uncalcined Mg-Al-CO3-hydrotalcite. Water Research, 39(12), 2535-42.
Alvarez-Ayuso E, Nugteren HW. Purification of chromium(VI) Finishing Wastewaters Using Calcined and Uncalcined Mg-Al-CO3-hydrotalcite. Water Res. 2005;39(12):2535-42. PubMed PMID: 15993462.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Purification of chromium(VI) finishing wastewaters using calcined and uncalcined Mg-Al-CO3-hydrotalcite. AU - Alvarez-Ayuso,E, AU - Nugteren,H W, PY - 2004/10/26/received PY - 2005/04/06/revised PY - 2005/04/12/accepted PY - 2005/7/5/pubmed PY - 2005/10/28/medline PY - 2005/7/5/entrez SP - 2535 EP - 42 JF - Water research JO - Water Res VL - 39 IS - 12 N2 - The applicability of calcined and uncalcined hydrotalcite for the purification of industrial effluents has been studied using chromium finishing wastewaters. Using a batch method, the influence of the initial concentration of chromium (10-450mg/l), hydrotalcite (HT) dose (0.5-5g/l) and time (0.5-72h) has been evaluated. The process could be described by the Langmuir model and gave a maximum removal of chromium of 16.3mg Cr(VI)/g on uncalcined HT and 128mg Cr(VI)/g on calcined hydrotalcite (C-HT). Removal using the calcined product provided an effective system to treat chromium finishing wastewaters with the most stringent discharge limit for such industrial streams being achieved with between two and four consecutive removal cycles on C-HT at a dose of 2g/l. SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/15993462/Purification_of_chromium_VI__finishing_wastewaters_using_calcined_and_uncalcined_Mg_Al_CO3_hydrotalcite_ DB - PRIME DP - Unbound Medicine ER -