Removal of Rhodamine B from aqueous solution by stalk corn activated carbon: adsorption and kinetic study

Dye-containing wastewaters impose a serious threat to the environment. Adsorption is useful approach for decontamination of contaminated media. In this study, activated carbon prepared from stalk corn (namely SCBAC) was used for removal of Rhodamine B (RhB) from aqueous solution. The effect of pH (3...

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Published in:Biomass conversion and biorefinery 2023-06, Vol.13 (9), p.7927-7936
Main Authors: Mousavi, Seyyed Alireza, Kamarehie, Bahram, Almasi, Ali, Darvishmotevalli, Mohammad, Salari, Mehdi, Moradnia, Maryam, Azimi, Faramarz, Ghaderpoori, Mansour, Neyazi, Zhaleh, Karami, Mohammad Amin
Format: Article
Language:English
Subjects:
Activated carbon
Adsorbents
Adsorption
Aqueous solutions
Biotechnology
Corn
Decontamination
Dosage
Dyeing
Dyes
Energy
Isotherms
Original Article
Renewable and Green Energy
Rhodamine
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Summary:Dye-containing wastewaters impose a serious threat to the environment. Adsorption is useful approach for decontamination of contaminated media. In this study, activated carbon prepared from stalk corn (namely SCBAC) was used for removal of Rhodamine B (RhB) from aqueous solution. The effect of pH (3–11), adsorbent dosage (0.5–2.5 g L −1 ), initial dye concentration (10–50 mg L −1 ), and contact time (30–110 min) was evaluated for RhB adsorption on SCBAC. In addition, the adsorption equilibrium was demonstrated with Langmuir and Freundlich isotherm models. Obtained results showed that the optimum pH and adsorbent dosage were 3 and 2.5 g L −1 , respectively. The Freundlich isotherm model fitted well with the experimental adsorption data. The maximum adsorption capacity attained was 5.6 mg g −1 . Adsorption of RhB onto adsorbent followed pseudo-second-order kinetics. Prepared SCBAC showed that can be utilized as economical and effective adsorbent for the adsorption of dyeing pollutants, like RB, from aqueous solutions.
ISSN:2190-6815
2190-6823
DOI:10.1007/s13399-021-01628-1