title: OPTIMIZATION OF SOME HEAVY METALS BIOSORPTION BY REPRESENTATIVE EGYPTIAN MARINE ALGAE(1).
abstract: 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.
authors.affiliation: Department of Chemistry of Natural and Microbial Products, National Research Centre, 12622, Elbohooth St. Cairo, Egypt.
authors.forename: Abdelmonem H
authors.initials: AH
authors.lastname: Elrefaii
authors.affiliation: Department of Chemistry of Natural and Microbial Products, National Research Centre, 12622, Elbohooth St. Cairo, Egypt.
authors.forename: Lotfy A
authors.initials: LA
authors.lastname: Sallam
authors.affiliation: Department of Chemistry of Natural and Microbial Products, National Research Centre, 12622, Elbohooth St. Cairo, Egypt.
authors.forename: Abdelhamid A
authors.initials: AA
authors.lastname: Hamdy
authors.affiliation: Department of Chemistry of Natural and Microbial Products, National Research Centre, 12622, Elbohooth St. Cairo, Egypt.
authors.forename: Eman F
authors.initials: EF
authors.lastname: Ahmed
keywords: Sargassum latifolium; Ulva lactuca; biosorption; heavy metal ions; marine algae; pH