Okara biochar immobilized calcium-alginate beads as eosin yellow dye adsorbent

[Display omitted] Okara biochar was obtained through the pyrolysis process and continued by encapsulation into beads form to ensure biochar does not leach into the environment. The utilization of okara biochar beads (OBB) as an adsorbent of eosin yellow (EY) dye was developed due to its porosity and...

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Bibliographic Details
Published inResults in Chemistry Vol. 7; p. 101268
Main Authors Suratman, Adhitasari, Astuti, Desi Nur, Kusumastuti, Pinastya Purwakaning, Sudiono, Sri
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.2024
Elsevier
Subjects
Adsorption
Alginate
Biochar
Eosin yellow dye
Pyrolysis
Tofu dregs (okara)
Pyrolysis
Alginate
Adsorption
Tofu dregs (okara)
Biochar
Eosin yellow dye
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Summary:[Display omitted] Okara biochar was obtained through the pyrolysis process and continued by encapsulation into beads form to ensure biochar does not leach into the environment. The utilization of okara biochar beads (OBB) as an adsorbent of eosin yellow (EY) dye was developed due to its porosity and high surface area properties. The adsorption kinetics of EY by OBB follows the pseudo second order (PSO) model while the adsorption isotherms follow the Freundlich isotherm model with reaction rate constants of 19.71 g mg−1 min−1 and KF = 12.12 L mol−1. The results show that OBB is easily separated from water and has an adsorption percentage up to 80%.
ISSN:2211-7156
2211-7156
DOI:10.1016/j.rechem.2023.101268