Eco-friendly lake pigment from sappanwood: Adsorption study and its application as natural colorant for natural rubber toy balloon

Authors

• Jitnapa Sirirak
• Ployphat Suppharatthanya
• Kedsarin Chantha
• Sutinee Girdthep
• Supanee Chayabutra

Publication Date

2021

Abstract

Due to the awareness of the impact of synthetic dye on human health and the environment, natural dye and lake pigment have attracted considerable attention from researcher. Herein, pink−red lake pigment from sappanwood was prepared using adsorption approach. The effects of initial pH, pH and concentration of brazilein solution, dosage of aluminium hydroxide, and adsorption time on adsorption were also explored. Results showed that the maximum adsorption capacity of 30 mg g-1 was achieved when 0.25%w/v of aluminium hydroxide and 100 mg L-1 of brazilein solution were applied. The adsorption kinetics and adsorption isotherm fitted the pseudo second order model and Langmuir isotherm, respectively. Additionally, this lake pigment can be utilized as a natural colorant for natural rubber toy balloons, which could made toy balloon safer for children than synthetic dye. Thus, our lake pigment can be an alternative choice of safe and environmental friendly colorant for products including toys.

DOI

10.55713/jmmm.v31i2.1009

First Page

27

Last Page

37

Recommended Citation

Sirirak, Jitnapa; Suppharatthanya, Ployphat; Chantha, Kedsarin; Girdthep, Sutinee; and Chayabutra, Supanee (2021) "Eco-friendly lake pigment from sappanwood: Adsorption study and its application as natural colorant for natural rubber toy balloon," Journal of Metals, Materials and Minerals: Vol. 31: No. 2, Article 4.
DOI: 10.55713/jmmm.v31i2.1009
Available at: https://digital.car.chula.ac.th/jmmm/vol31/iss2/4