Starch Biocryogel for Removal of Methylene Blue by Batch Adsorption

Tarawee Taweekarn; Worawit Wongniramaikul; Chanita Boonkanon; Chonthicha Phanrit; Wilasinee Sriprom; Wadcharawadee Limsakul; Wanchitra Towanlong; Chanadda Phawachalotorn; Aree Choodum

doi:10.3390/polym14245543

Polymers (Dec 2022)

Starch Biocryogel for Removal of Methylene Blue by Batch Adsorption

Tarawee Taweekarn,
Worawit Wongniramaikul,
Chanita Boonkanon,
Chonthicha Phanrit,
Wilasinee Sriprom,
Wadcharawadee Limsakul,
Wanchitra Towanlong,
Chanadda Phawachalotorn,
Aree Choodum

Affiliations

Tarawee Taweekarn: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
Worawit Wongniramaikul: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
Chanita Boonkanon: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
Chonthicha Phanrit: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
Wilasinee Sriprom: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
Wadcharawadee Limsakul: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
Wanchitra Towanlong: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
Chanadda Phawachalotorn: King Mongkut’s Institute of Technology Ladkrabang, Prince of Chumphon Campus, Chumphon 86160, Thailand
Aree Choodum: Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand

DOI: https://doi.org/10.3390/polym14245543
Journal volume & issue: Vol. 14, no. 24
p. 5543

Abstract

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A green monolithic starch cryogel was prepared and applied for the removal of methylene blue (MB) using a batch system. The influence of various experimental parameters on MB adsorption was investigated. High removal efficiency (81.58 ± 0.59%) and adsorption capacity (34.84 mg g−1) were achieved. The Langmuir model better fitted the experimental data (determination coefficient (R2) = 0.9838) than the Freundlich one (R2 = 0.8542), while the kinetics of MB adsorption on the cryogel followed a pseudo-second-order model. The adsorption process was spontaneous and endothermic with an activation energy of 37.8 kJ mol−1 that indicated physical adsorption. The starch cryogel was used for MB removal from a wastewater sample collected from a local Batik production community enterprise in Phuket, Thailand, and a removal efficiency of 75.6% was achieved, indicating that it has a high potential as a green adsorbent for MB removal.

Published in Polymers

ISSN: 2073-4360 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/polymers/

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