Treatment of real industrial wastewaters through nano-TiO2 and nano-Fe2 O3 photocatalysis: case study of mining and kraft pulp mill effluents

Environmental Technology
V NogueiraR O Pereira

Abstract

High quantities of industrial wastewaters containing a wide range of organic and inorganic pollutants are being directly discharged into the environment, sometimes without proper treatment. Nanotechnology has a tremendous potential improving the existing treatments or even develop new treatment solutions. In this study, nano-TiO2 or nano-Fe2O3 was used for the photocatalytic treatment of kraft pulp mill effluent and mining effluent. The experiments with the organic effluent lead to reduction percentages of 93.3%, 68.4% and 89.8%, for colour, aromatic compounds and chemical oxygen demand, respectively, when treated with nano-TiO2/H2O2/UV and nano-Fe2O3/H2O2/UV, at pH 3.0. Significant removal of metals from the mining effluent was recorded but only for Zn, Al and Cd, the highest removal attained with 1.0 g L-1 of nano-TiO2/UV and nano-Fe2O3/UV. Regarding the toxicity of the organic effluent to Vibrio fischeri, it was reduced with the treatments combining the oxidant and the catalyst. However, for the inorganic effluent, the best reduction was achieved using 1.0 g L-1 of catalyst. In fact, the increase in dose of the catalyst, especially for nano-TiO2, enhanced toxicity reduction. Our results have shown that the use of these NMs s...Continue Reading

References

Apr 7, 1998·Bulletin of Environmental Contamination and Toxicology·J A Aruldoss, T Viraraghavan
Nov 26, 1999·Ecotoxicology and Environmental Safety·I LopesR Ribeiro
Aug 22, 2001·Journal of Agricultural and Food Chemistry·N MulinacciF F Vincieri
Apr 12, 2005·Environmental Science & Technology·Paritam K DuttaAjay K Ray
Mar 16, 2007·Journal of Environmental Management·Ebru Cokay Catalkaya, Fikret Kargi
Aug 24, 2007·Water Research·Grigory Zelmanov, Raphael Semiat
Feb 9, 2008·Critical Reviews in Microbiology·J TheronT E Cloete
Aug 30, 2008·Journal of Hazardous Materials·Monem KallelBoubaker Elleuch
Apr 9, 2009·Environmental Science & Technology·Rebecca A FrenchPhilippe C Baveye
Apr 10, 2010·Water Research·Meng Nan ChongChris Saint
Oct 20, 2010·The Science of the Total Environment·I OllerJ A Sánchez-Pérez
May 23, 2012·Journal of Hazardous Materials·Carlos E Barrera-DíazBryan Bilyeu
May 29, 2012·Journal of Nanoscience and Nanotechnology·Tushar JagadalePragati Thakur
Jan 8, 2013·Environmental Science and Pollution Research International·Iram MohmoodEduarda Pereira
Mar 10, 2016·Bulletin of the World Health Organization·Jeanne Luh, Jamie Bartram

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Citations

Jul 11, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Haitham Elnakar, Ian D Buchanan
May 3, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Petros KokkinosDanae Venieri
Jun 1, 2021·Environmental Science and Pollution Research International·Seyyedeh Cobra AzimiAlireza Pendashteh
Nov 20, 2021·Environmental Science and Pollution Research International·Komargoud PrakruthiHarikaranahalli Puttaiah Shivaraju

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Software Mentioned

SigmaPlot
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