Biosorption of lead by the brown seaweed Sargassum filipendula - batch and continuous pilot studies
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BIOSORPTION STUDY OF Ni AND Cr BY Sargassum filipendula: KINETICS AND EQUILIBRIUM
In this work, the biosorption of Cr and Ni by Sargassum filipendula pre-treated with CaCl2 was studied. Kinetic and equilibrium experiments were carried out for monoand multi-component solutions in a batch reactor at pH 3.0 and 30 oC. The results from the kinetic experiments showed that Cr adsorbs slower than Ni. This behavior was explained by means of a mechanistic analysis, which showed that ...
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A fundamental investigation of the biosorption of Cd2+ from aqueous solution by the edible seaweed Sargassum fusiforme was performed under batch conditions. The influences of experimental parameters, such as the initial pH, sorption time, temperature, and initial Cd2+ concentration, on Cd2+ uptake by S. fusiforme were evaluated. The results indicated that the biosorption of Cd2+ depended on the...
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Fucan is a term used to denominate a type of polysaccharide which contains substantial percentages of l-fucose and sulfate ester groups. We obtained five heterofucans from Sargassum filipendula by proteolytic digestion followed by sequential acetone precipitation. These heterofucans are composed mainly of fucose, glucose, glucuronic acid, galactose and sulfate. These fucans did not show anticoa...
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The biosorption of copper by inactivated biomass of the brown seaweed Sargassum baccularia, immobilized onto polyvinyl alcohol (PVA) gel beads, was investigated using a laboratory-scale packed bed column. Continuous-flow column tests were performed to determine breakthrough curves at two different column lengths. In both cases, a very broad trailing edge of the breakthrough curve was observed, ...
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Neutral and acidic polysaccharides and their protein complexes were fractionated and purified from the brown seaweed umitoranoo (Sargassum thunbergii) by fractional extraction, iron-exchange chromatography, and gel filtration. Thirty-one polysaccharide fractions were obtained and tested for antitumor activity in mice with Ehrlich carcinoma transplanted i.p. Two of the fractions, GIV-A ([alpha]2...
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ژورنال
عنوان ژورنال: Electronic Journal of Biotechnology
سال: 2007
ISSN: 0717-3458,0717-3458
DOI: 10.2225/vol10-issue3-fulltext-3