2-Hydroxy-1, 4-napthoquinone solubilization, thermodynamics and adsorption kinetics with surfactant

Zoya Zaheer; Ekram Yousif Danish; Samia A. Kosa

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2-Hydroxy-1, 4-napthoquinone solubilization, thermodynamics and adsorption kinetics with surfactant

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- 2-Hydroxy-1, 4-napthoquinone solubilization, thermodynamics and adsorption kinetics with surfactant
- Chinese Journal of Chemical Engineering Vol. 32, Issue 4, Pages: 212-223(2021)
- Affiliations：
  
  Department of Chemistry, Faculty of Science, P. O. Box 80203, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2021
- Accepted：
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Zoya Zaheer, Ekram Yousif Danish, Samia A. Kosa. 2-Hydroxy-1, 4-napthoquinone solubilization, thermodynamics and adsorption kinetics with surfactant[J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 212-223.
DOI：

Zoya Zaheer, Ekram Yousif Danish, Samia A. Kosa. 2-Hydroxy-1, 4-napthoquinone solubilization, thermodynamics and adsorption kinetics with surfactant[J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 212-223. DOI：

摘要

Abstract

2-Hydroxy-1

4-napthoquinone (lawsone) natural red-orange dye was extracted from fresh henna (Lawsonia inermis) leaves in an alkaline media. The lawsone-surfactant solubilization constants (

) were calculated for the first time by using cationic cetyltrimethylammonium bromide (CTAB) and anionic sodium dodecyl sulphate (SDS). The standard free energy

concentration of solubilized lawsone and number of lawsone molecules solubilized into micelles were calculated and discussed. Surface excess

minimum surface area per molecule

surface pressure

free energy (adsorption and aggregation) and equilibrium constants of different states were determined from tensiometry. Different metal ions (Ag

and Al

) were used to determine the complex forming ability with lawsone. Out of these

Ag+ ions have strong binding capacity with lawsone. The adsorption of lawsone on the surface of glass with silver ions in presence of CTAB was also observed at pH ≥ 9.0. The pseudo-first

secondorder kinetic equation

intraparticles diffusion and Elovich models were used to de

termine the kinetics of lawsone adsorption onto the surface of glass and a probable mechanism has been discussed. Lawsone adsorption followed second-order kinetic equation (

=0.019 g·mg

-1

·min

-1

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