Potential adsorption of methylene blue from aqueous solution using green macroalgaePosidonia oceanica.

International Conference on Functional Materials and Chemical Engineering 2017

材料科学;化学工业

Allouche, F.-N.^1 ; Yassaa, N.^1

Centre de Développement des Energies Renouvelables, B.P. 62, Route de l'Observatoire, Bouzaréah, Algiers

16340, Algeria^1

关键词: Adsorption equilibria;    Equilibrium isotherms;    Freundlich isotherm;    Industrial effluent;    Isotherm equilibrium;    Posidonia oceanica;    Pseudo-second order model;    Sorption capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/323/1/012006/pdf
DOI  :  10.1088/1757-899X/323/1/012006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The use of inexpensive biological materials, such as marine algae for removing dyes from contaminated industrial effluents appears as a potential alternative method. The aim of this study is to investigate the aptitude of marine macroalgae Posidonia Oceanica local biomass abundant on the coasts of Algeria for selective sorption of methylene blue (MB) from an aqueous solution in batch experiments at 20 °C. A maximum percentage removal of Posidonia oceanica occurs at pH 5. Equilibrium isotherm data were analyzed using the Langmuir and the Freundlich isotherms. The adsorption equilibrium of methylene blue was best describe by Langmuir model than the Freundlich model. The maximum sorption capacity was 357 mgg-1at pH 5. The sorption data were very well described by the pseudo-second-order model. Keywords: Posidonia oceanica, Methylene blue (MB), Biosorption, Isotherm Equilibrium, Kinetics; Modelling.