Study of the impact of combination of ZnO nanoparticles with ultraviolet radiation (photocatalytic process) on the removal of anionic surfactant linear alkyl benzene sulfonate (LAS) from aqueous solutions using Taguchi statistical method

Razavi, Tahereh. and Fadaei, Abdolmajid. and Sadeghi, Mehraban. and Shahsavan markadeh, Somayeh. (2016) Study of the impact of combination of ZnO nanoparticles with ultraviolet radiation (photocatalytic process) on the removal of anionic surfactant linear alkyl benzene sulfonate (LAS) from aqueous solutions using Taguchi statistical method. Desalination and Water Treatment, 57 (59). pp. 28755-28761.

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Abstract

Surfactants or surface-active agents are molecules with hydrophilic head and hydrophobic tail. They have been widely used as active ingredient in soap and detergent formulations. Detergents are synthetic, organic materials with cleansing and dissolution properties. Among the anionic surfactants, linear alkyl benzene sulfonate (LAS) has the highest consumption and is used in high concentrations in household detergents as washing powders, dishwashing liquids, and other household cleaners. LAS can have an impact of inhibiting the biological activity in the soil, which plays an important role in soil fertility and nutrient cycles. Removing pollutants in advanced oxidation processes is mainly based on producing the hydroxyl free radicals with potential high oxidation as well as the fact that many organic compounds can be converted into minerals. In the past two decades, photocatalyzing by semiconducting materials such as zinc oxide (ZnO) has received much attention due to its high sensitivity, high stability, non-toxic nature, wide energy gap, and higher efficiency in the production of electrons. The properties of the energy gap may cause the absorption of UV portion of the spectrum by these nanoparticles. In this study, initial concentrations of LAS including 0.5, 14, and 21 mg/L, ZnO concentration of 50, 100, and 150 mg/L, pH 3, 7, and 11, duration of 8, 16, and 24 min were used. Also, the Taguchi statistical method was used. The result showed that, in the LAS concentration of 21 mg/L, duration of 24 min, pH 3, and ZnO concentration of 150 mg/L, the highest percentage of removal could be seen.

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: LAS, Photocatalyzing, Semiconductor, ZnO
Subjects: QT physiology
Divisions: Reserach Vice-Chancellar Department > student research center
Depositing User: zahra bagheri .
Date Deposited: 02 Jul 2017 04:25
Last Modified: 20 May 2018 06:56
URI: http://eprints.skums.ac.ir/id/eprint/667

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