Magnetically modified Posidonia oceanica biomass as an adsorbent for organic dyes removal

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Published: Feb 29, 2016
DOI: https://doi.org/10.12681/mms.1549
Keywords:
Posidonia oceanica Neptune balls magnetic biomass organic dyes adsorbent.
I. SAFARIK
N. ASHOURA
Department of Chemistry, Florida Institute of Technology, 150 W. University Blvd., Melbourne, FL 32901
Z. MADEROVA
Global Change Research Institute, CAS, Na Sadkach 7, 370 05 Ceske Budejovice
K. POSOIKOVA
Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71 Olomouc
E. BALDIKOVA
Global Change Research Institute, CAS, Na Sadkach 7, 370 05 Ceske Budejovice
M. SAFARIKOVA
Department of Nanobiotechnology, Biology Centre, ISB, CAS, Na Sadkach 7, 370 05 Ceske Budejovice
Abstract

Magnetically modified Posidonia oceanica sea grass dead biomass was employed as an adsorbent of organic dyes. The adsorption of seven water-soluble organic dyes was characterized using Langmuir adsorption model. The highest calculated maximum adsorption capacity was found for Bismarck brown Y (233.5 mg g-1), while the lowest capacity value was obtained for safranin O (88.1 mg g-1). The adsorption processes followed the pseudo-second-order kinetic model and the thermodynamic studies indicated spontaneous and endothermic adsorption.

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