Kinetic Study of Curcumin on Modal Fabric

Abstract

A kinetic study of curcumin on modal fabric was carried out using an initial dye concentration of 1 g/L at three diff erent temperatures, 70 °C, 85 °C and 100 °C, at pH 7 and an material to liquor ratio of 1:20. Pseudo fi rst-order and pseudo second-order kinetics were applied, and it was found that the adsorption kinetics of curcumin on modal fabric matched the pseudo second-order kinetic model. The activation energy was found to be equal to 71.14 kJ/mol, while the enthalpy and entropy of activation were 68.16 kJ/mol and -66.02 J/molK respectively.

Textile colouration with natural colourants: A review

“…Similar results were found with lac dye (Chairat et al, 2008). Furthermore, similar findings were reported when lac dye was used on chitosan pre-treated cotton, and curcumin was used on regenerated cellulose such as modal (Ahsanul Haque et al, 2018;Rattanaphani et al, 2007). Hence, a certain interaction between cotton and a range of natural dyes are well established as a favourable condition for dyeing.…”

Sustainable Adsorbents from Plant-Derived Agricultural Wastes for Anionic Dye Removal: A Review

“…The first-order model is also known as the Lagergren equation, which relates to the adsorption rate associated with the number of unoccupied areas of the dye [97]. The linear equation of the pseudo-first-order model is represented as: ln q e − q t = ln q e − k 1 t (12) where k 1 is the first-order adsorption-rate constant, and q t is the weight of the dye adsorbed (mg/g) at time (t) [98,99]. When the data better fit with the first-order equation, the adsorption is more likely to be a physisorption process.…”

“…where A is the Arrhenius factor, E a is the Arrhenius activation energy (kJ/mol), T represents the absolute temperature (K), and R represents the gas constant [99].…”

An Ecological Approach to Textile Design: Natural Dyeing and Eco Printing on Lyocell

“…Lyocell gibi rejenere selülozik esaslı yapay bir lif olan Modal liflerinden yapılmış kumaşın kurkumin ile doğal boyamasında farklı sıcaklıkların etkisi ve adsorpsiyon kinetiği incelenmiştir (Haque, Farzana, Hussain, Smriti & Siddiqa, 2018).…”