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OPTIMIZATION OF SOME HEAVY METALS BIOSORPTION BY REPRESENTATIVE EGYPTIAN MARINE ALGAE 1
Author(s) -
Elrefaii Abdelmonem H.,
Sallam Lotfy A.,
Hamdy Abdelhamid A.,
Ahmed Eman F.
Publication year - 2012
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.2012.01114.x
Subject(s) - ulva lactuca , algae , biosorption , biology , brown algae , botany , metal , green algae , environmental chemistry , heavy metals , metal ions in aqueous solution , biomass (ecology) , nuclear chemistry , chemistry , ecology , materials science , adsorption , metallurgy , sorption , organic chemistry
Marine algae—as inexpensive and renewable natural biomass—have attracted the attention of many investigators to be used to preconcentrate and biosorb many heavy metal ions. Impressed by this concept, the metal uptake capacity of Egyptian marine algae was examined using representatives of green and brown algae, namely, Ulva lactuca L. and Sargassum latifolium (Turner) C. Agardh, respectively. The biosorption efficiencies of Cu 2+ , Co 2+ , Ni 2+ , Cd 2+ , Hg 2+ , Ag 2+ , and Pb 2+ ions seem to depend on the type of the algae used as well as the conditions under which the uptake processes were conducted. It was demonstrated that a pH range of 7.5–8.8 was optimum for the removal of the tested metals. Similarly, the uptake process was markedly accelerated during the first 2 h using relatively low metal level and sufficient amounts of the dried powdered tested algae.