Coal bottom ash derived zeolite (SSZ-13) for the sorption of synthetic anion Alizarin Red S (ARS) dye

Anjani R K Gollakota; Venkata Subbaiah Munagapati; Vikranth Volli; Sneha Gautam; Jet-Chau Wen; Chi-Min Shu

doi:10.1016/j.jhazmat.2021.125925

Coal bottom ash derived zeolite (SSZ-13) for the sorption of synthetic anion Alizarin Red S (ARS) dye

J Hazard Mater. 2021 Aug 15:416:125925. doi: 10.1016/j.jhazmat.2021.125925. Epub 2021 Apr 20.

Authors

Anjani R K Gollakota¹, Venkata Subbaiah Munagapati², Vikranth Volli³, Sneha Gautam⁴, Jet-Chau Wen⁵, Chi-Min Shu⁶

Affiliations

¹ Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Douliou City 64002, Yunlin County, Taiwan, ROC. Electronic address: gollakota.iitg@gmail.com.
² Research Centre for Soil & Water Resources and Natural Disaster Prevention (SWAN), National Yunlin University of Science & Technology, Douliou 64002, Taiwan, ROC.
³ Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Douliou City 64002, Yunlin County, Taiwan, ROC.
⁴ Department of Civil Engineering, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu 641114, India.
⁵ Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Douliou City 64002, Yunlin County, Taiwan, ROC; Research Centre for Soil & Water Resources and Natural Disaster Prevention (SWAN), National Yunlin University of Science & Technology, Douliou 64002, Taiwan, ROC. Electronic address: wenjc@yuntech.edu.tw.
⁶ Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Douliou City 64002, Yunlin County, Taiwan, ROC. Electronic address: shucm@yuntech.edu.tw.

PMID: 34492857
DOI: 10.1016/j.jhazmat.2021.125925

Abstract

SSZ-13 zeolite was successfully synthesized from coal bottom ash (CBA) upon hydrothermal treatment for selective sorption of Alizarin Red S (ARS) dye. The characterization of CBA, and SSZ-13 were performed using BET, SEM, FTIR, XRF, and XRD techniques. The optimal fusion ratio (CBA: NaOH) was identified as 1:3, resulting zeolite SSZ-13 with a specific surface area of 206.6 m²/g, compared to raw CBA (7.81 m²/g). The kinetics, isotherms, and thermodynamics of the ARS adsorption onto the SSZ-13, and CBA were assessed under various conditions. The results indicated that the adsorption phenomenon is optimal under acidic medium (pH = 2 for CBA, pH = 3 for SSZ-13); at ambient room temperature of 298 K; adsorbent dosage of 0.03 g, contact time of 120 min. Further, the equilibrium data fitted well to Langmuir isotherm (q_e = 210.75 mg/g), following pseudo-second-order kinetics. Moreover, the chemisorption phenomenon is clearly described using Elovich kinetic model. Various thermodynamic parameters signifies the adsorption phenomenon is spontaneous, and endothermic in nature. Finally, regeneration studies revealed the sensitivity of SSZ-13 zeolite towards 0.1 M NaOH/EtOH eluent in recovery and the possibility of reuse to five successive adsorption/desorption cycles. Thus, hydrothermal treatment of CBA has potential in producing zeolites suitable to adsorption.

Keywords: Adsorption; Alizarin Red S; Coal bottom ash; SSZ-13; Zeolite.

MeSH terms

Adsorption
Anions
Anthraquinones
Coal
Coal Ash
Hydrogen-Ion Concentration
Kinetics
Thermodynamics
Water Pollutants, Chemical*
Zeolites*

Substances

Anions
Anthraquinones
Coal
Coal Ash
Water Pollutants, Chemical
Zeolites
Alizarin Red S