Comparison of Simarouba glauca seed shell carbons for enhanced direct red 12B dye adsorption: Adsorption isotherm and kinetic studies

Nguyen Chi Thanh; Sabarathinam Shanmugam; Sridharan Shanmugasundaram; Mohamad S AlSalhi; Sandhanasamy Devanesan; Rajasree Shanmuganathan; Nguyen Thuy Lan Chi

doi:10.1016/j.fct.2022.113326

Comparison of Simarouba glauca seed shell carbons for enhanced direct red 12B dye adsorption: Adsorption isotherm and kinetic studies

Food Chem Toxicol. 2022 Oct:168:113326. doi: 10.1016/j.fct.2022.113326. Epub 2022 Aug 5.

Authors

Nguyen Chi Thanh¹, Sabarathinam Shanmugam², Sridharan Shanmugasundaram³, Mohamad S AlSalhi⁴, Sandhanasamy Devanesan⁴, Rajasree Shanmuganathan⁵, Nguyen Thuy Lan Chi⁶

Affiliations

¹ Faculty of Applied Sciences, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City, 70000, Viet Nam.
² Chair of Biosystems Engineering, Institute of Forestry and Engineering, Estonian University of Life Sciences, Kreutzwaldi 56, 51014, Tartu, Estonia.
³ Bioprocess Laboratory, Department of Microbial Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, India.
⁴ Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia.
⁵ Department of Biomaterials, Saveetha Dental College and Hospital, SIMATS, Saveetha University, Chennai, 600 077, Tamil Nadu, India. Electronic address: shree.shri1988@gmail.com.
⁶ School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam. Electronic address: chi.ntl@vlu.edu.vn.

PMID: 35934123
DOI: 10.1016/j.fct.2022.113326

Abstract

This study aims at the transformation of the waste lignocellulosic biomass, Simarouba glauca seed shell obtained from biofuel industries, into a value-added adsorbent for the removal of dyes from aqueous media. The basic dye direct red (DR) 12B was adsorbed using chemically (ZnCl₂) and thermally activated Simarouba seed shell carbon (ZASRC and SRC, respectively). Dye removal in batch mode was studied by evaluating adsorbent dosage, contact time, pH, adsorption isotherm and kinetics. Enhanced adsorption of DR12B was attained within 80 min at pH 5 with the maximal adsorption capacity (Q₀) of 17.48 and 64.94 mg g^-1, for SRC and ZASRC, respectively. Further, the dye removal followed Freundlich isotherm model and pseudo second-order kinetics. The mean-free energy of adsorption demonstrated that dye adsorption onto ZASRC occurs through ion-exchange. Thus, ZASRC can be safely and easily applied for the removal of direct red 12B from aqueous solutions.

Keywords: Adsorption; Direct Red12B dye; Isotherms; Kinetics; Simarouba waste biomass.

MeSH terms

Adsorption
Azo Compounds
Biofuels
Carbon
Charcoal
Coloring Agents
Hydrogen-Ion Concentration
Kinetics
Simarouba*
Thermodynamics
Water Pollutants, Chemical*

Substances

Azo Compounds
Biofuels
Coloring Agents
Direct Red 12B
Water Pollutants, Chemical
Charcoal
Carbon