Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment.

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Reza Shahbazi, Mona Zamani Pedram

Abstract

A novel photocatalytic continuous system has been proposed for the treatment of tannery waste water, which has high levels of environmental pollutants. The purification process was performed by passing wastewater on a titanium dioxide (TiO2)-coated surface, which is continuously activated by irradiation of ultraviolet light. To improve the yield of the process, ferric chloride (FeCl3) was used as a coagulation agent. The organic and inorganic compounds, as well as the microorganisms in the tannery wastewater media, were degraded through a photocatalytic process. The results revealed that total dissolved solids and total suspended solids contents were significantly decreased from 8,450 and 8,990 mg·L-1 to 4,032 and 4,127 mg·L-1, respectively. Furthermore, the chemical oxygen demand content of the sample was reduced from 370 to 50 mg·L-1 after the addition of 100 mL of FeCl3 and 4 h of treatment. The same results were observed for the elimination of sulfate and chromium ions, which led to a decline in electrical conductivity. This suggests that introducing 100 mL of FeCl3 as the coagulation agent and continuous treatment with photocatalityc set-up could be considered as an effective method for the purification of tannery wastewat...Continue Reading

References

Jan 3, 2006·Journal of Hazardous Materials·Ticiane Pokrywiecki SauerRegina de Fátima Peralta Muniz Moreira
Jun 6, 2013·The Science of the Total Environment·Giusy LofranoDerin Orhon
Mar 24, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Weiwei ZhaoXiaocong Wang
May 17, 2018·Photochemistry and Photobiology·Imran AliAhmad Yacine Badjah
Jan 10, 2019·Environmental Research·Imran AliAbdulrahman Alwarthan
Apr 2, 2019·International Journal of Biological Macromolecules·Imran AliAmal Mohammed Al-Mohaimeed
Sep 20, 2020·Journal of Hazardous Materials·Moonis Ali KhanAbdelrazig Elfaki Hamedelniel

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