Open AccessMagnetically modified Posidonia oceanica biomass as an adsorbent for organic dyes removal
Author(s) -
Ivo Šafařı́k,
Norah Ashoura,
Zdeňka Maděrová,
K. Posoikova,
Eva Baldíková,
Mirka Šafařı́ková
Publication year - 2016
Publication title -
mediterranean marine science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.734
H-Index - 38
eISSN - 1791-6763
pISSN - 1108-393X
DOI - 10.12681/mms.1549
Subject(s) - adsorption , posidonia oceanica , endothermic process , chemistry , langmuir adsorption model , biomass (ecology) , nuclear chemistry , chemical engineering , organic chemistry , agronomy , biology , seagrass , ecology , ecosystem , engineering
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.