Page 130 - Materials Chemistry, Second Edition

Textile Wastewater Treatment by Advanced Oxidation Processes 111

or immobilized laccases is an important parameter to be considered, since, as it
has been previously reported, transformation products from the enzymatic treatment
®
of dyes can lead to more toxic metabolites as determined by the Microtox assay
(Champagne and Ramsay, 2010).

6.4 CONCLUSIONS
From the results obtained, the different AOPs considered here represent an attractive
alternative for the treatment of contaminated ground water and industrial wastewa-
ter resources. Most of these AOPs involve the in situ generation of highly potent
chemical oxidants such as ∙OH radicals, accelerating the oxidation and decoloriza-
tion of dye-containing wastewaters. Furthermore, the results for stability and reus-
ability of the used nanoparticles, used either as chemical catalysts or as support for
enzyme immobilization, are promising in the development of unconventional AOPs
for wastewater treatment.

ACKNOWLEDGEMENTS

This research has been supported by MINECO (CTQ2016-79461-R, program
co-funded by FEDER). The authors belong to the Galician Competitive Research
Group (GRC 2013-032, program co-funded by FEDER), as well as to CRETUS
(AGRUP2015/02).

REFERENCES
Apostol, L.C., L. Pereira, R. Pereira, M. Gavrilescu, and M.M. Alves. 2012. Biological decol-
orization of xanthene dyes by anaerobic granular biomass. Biodegradation 23 (5):
725–737.
Augugliaro, V., M. Litter, L. Palmisano, and J. Soria. 2006. The combination of heterogeneous
photocatalysis with chemical and physical operations: A tool for improving the photo-
process performance. Journal of Photochemistry and Photobiology C: Photochemistry
Reviews 7 (4): 127–144.
Ayed, L., K. Chaieb, A. Cheref, and A. Bakhrouf. 2010. Biodegradation and decolorization of
triphenylmethane dyes by Staphylococcus epidermidis. Desalination 260 (1): 137–146.
Azbar, N., T. Yonar, and K. Kestioglu. 2004. Comparison of various advanced oxidation pro-
cesses and chemical treatment methods for COD and color removal from a polyester
and acetate fiber dyeing effluent. Chemosphere 55 (1): 35–43.
Baban, A., A. Yediler, D. Lienert, N. Kemerdere, and A. Kettrup. 2003. Ozonation of high
strength segregated effluents from a woollen textile dyeing and finishing plant. Dyes
and Pigments 58 (2): 93–98.
Baig, S., and P.A. Liechti. 2001. Ozone treatment for biorefractory COD removal. Water
Science and Technology 43 (2): 197–204.
Barka, N., I. Bakas, S. Qourzal, A. Assabbane, and Y. Ait-ichou. 2013. Degradation of phe-
nol in water by titanium dioxide photocatalysis. Oriental Journal of Chemistry 29 (3):
1055–1060.
Bautista, P., A.F. Mohedano, J.A. Casas, J.A. Zazo, and J.J Rodriguez. 2008. An overview
of the application of Fenton oxidation to industrial wastewaters treatment. Journal of
Chemical Technology and Biotechnology 83 (10): 1323–1338.