Journal
CHEMOSPHERE
Volume 302, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.134793
Keywords
Activated carbon; Composite membrane; Adsorption; Isotherm study; Thermodynamic study
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Funding
- Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, Saudi Arabia [KEP-8-130-42]
- project Sustainable Process Integration Laboratory - SPIL [CZ.02.1.01/0.0/0.0/15_003/0000456]
- Operational Programme Research, Development and Education of the Czech Ministry of Education, Youth and Sports by EU European Structural and Investment Funds, Operational Programme Research, Development and Education
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In this study, activated carbon was prepared from date palm and incorporated with alginate to prepare a membrane for adsorption of methylene blue. The experimental results showed that the membrane had high adsorption efficiency and maximum adsorption capacity for methylene blue.
In the current study, activated carbon (AC) was prepared from date palm using single step activation using boric acid as an activating agent. The synthesized AC was incorporated with alginate (AC-alginate (AC-alg)) to prepare membrane for adsorption of methylene blue (MB) in batch adsorption study. The prepared membrane was characterized using different types of analytical techniques such as FTIR, SEM, and TGA analysis. Adsorption of methylene blue dye from aqueous solution was carried out using AC-alg membrane in batch investigation. Various experimental parameters effecting the adsorption of MB on membrane such as initial pH of dye solution, contact time, concentration of dye solution and temperature were optimized to get maximum adsorption efficiency. Kinetics, isotherm and thermodynamics study was performed for dye adsorption. Pseudo-second order kinetic model and Langmuir adsorption isotherm were well fitted to the experimental data. The maximum adsorption capacity for MB adsorption was 666 mg/g found by Langmuir adsorption isotherm. Thermodynamic study revealed that the adsorption of MB on AC-alg membrane is spontaneous and an exothermic process. The
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