REVIEW PAPER
Removing Humic Acid from Aqueous Solution Using Titanium Dioxide: A Review
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School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, P.R. China
 
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State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P.R. China
 
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Vietnam Maritime University, Haiphong, Vietnam
 
 
Submission date: 2017-11-14
 
 
Final revision date: 2018-02-01
 
 
Acceptance date: 2018-02-10
 
 
Online publication date: 2018-09-19
 
 
Publication date: 2018-12-20
 
 
Corresponding author
Dong Xu   

State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China, Donghu South Road, No.7, 430072 Wuhan, China
 
 
Pol. J. Environ. Stud. 2019;28(2):529-542
 
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ABSTRACT
Recently, the photocatalytic degradation technique with titanium dioxide (TiO2) has been widely applied for the degradation of humic acid (HA) from aqueous solution due to its ability to achieve complete mineralization of organic contaminants. Because TiO2 is the most commonly used semiconductor photocatalyst, efforts on the modification of TiO2 in order to improve catalyst efficiency were presented in this review manuscript. The key photoreactor operation parameters such as TiO2 loading, pH, temperature, oxygen concentration, concentration and nature of HA, light wavelength, light intensity, the presence of inorganic ions and mechanistic pathway for pollutant removal, and the formation of the intermediates and their effects on the mineralization and disinfection of the photo-process were also assessed. Although we can see an increase in the number of papers that have been published in this area, further progress is needed to improve the understanding of the dynamic interactions between TiO2 photocatalytic oxidation process and HA, as well as to suggest possible future developments in this promising field.
eISSN:2083-5906
ISSN:1230-1485
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