Journal ArticleDOI
Comparative studies of the heavy metal uptake of whole cells and different types of cell walls from Chlorella fusca
Barbara Wehrheim,Michael Wettern +1 more
Reads0
Chats0
TLDR
In all cases, short-term or long-term uptake and single ion solution or metal mixtures, whole cells showed the highest metal accumulation while hcw adsorbed more metal ions than mcw.Abstract:
Short-term uptake of cadmium, copper and lead by whole cells, mother cell walls (mcw) and cell walls from cell homogenates (hcw) of Chlorella fusca were similar for all biosorbents: Adsorption equilibrium was reached five minutes after metal addition. Analogous, over 90% of the readily adsorbed metal ions could be desorbed by a 1 minute EDTA treatment. In all cases, short-term or long-term uptake and single ion solution or metal mixtures, whole cells showed the highest metal accumulation while hcw adsorbed more metal ions than mcw. The role of the cell wall for metal ion adsorption is discussed.read more
Citations
More filters
Journal ArticleDOI
Resistance of environmental bacteria to heavy metals
TL;DR: In this paper, the authors evaluated the toxicity of the most important metallic cations (Cu, Zn, Cr, Cd, Co, Hg) by comparing results obtained by two tests of toxicity in solid and liquid media.
Journal ArticleDOI
Biosorption of metal ions by freshwater algae with different surface characteristics
TL;DR: In this paper, four freshwater algae with different cell surface characteristic, Oscillatoria limnetica, Anabaena spiroides, Eudorina elegans and Chlorella vulgaris, were chosen to examine their copper(II), cadmium(II) and lead(II)-sorption activity using the Freundlich model, in terms of the surface area/dry weight ratios, and the presence of other metal ions.
Journal ArticleDOI
Use of Fourier Transform Infrared (FTIR) spectroscopy to study cadmium-induced changes in Padina tetrastromatica (Hauck).
TL;DR: FTIR technique proves to be an efficient tool for detecting structural changes and probable binding sites induced by the presence of a metal pollutant, cadmium, in the marine environment.
Journal ArticleDOI
Bioremediation of heavy metals in a synthetic wastewater using a rotating biological contactor.
S.C Costley,F.M Wallis +1 more
TL;DR: The results suggest that RBCs can be used successfully in the treatment of high-strength metal-contaminated wastewaters and not adversely affected by the desorption process as evidenced by the similar metal removal rates obtained in each of the three sorption cycles.
Journal ArticleDOI
Toxicological Response of the Green Alga Chlorella vulgaris, to Some Heavy Metals
Eman Afkar,H. Ababna,A. A. Fathi +2 more
TL;DR: The data show that the lower doses of the three tested metals had stimulatory effect in biomass yield of Chlorella vulgaris, whereas the higher doses were inhibitory depending on the type of the metal.
References
More filters
Journal ArticleDOI
Sporopollenin in the cell wall of Chlorella and other algae: Ultrastructure, chemistry, and incorporation of 14 C-acetate, studied in synchronous cultures
TL;DR: Examination of the wall structure of the above algae suggest a relationship between the presence of sporopollenin and the development of an outer, trilaminar wall component, and suggests that the ability to synthesise sporipollenin is related to the able to produce secondary carotenoids.
Journal ArticleDOI
The binding of heavy metals to algal surfaces
TL;DR: In this article, a voltammetric methodology was developed to measure (without prior separation of the solid phase) the metal ions in solution in the presence of algae and to assess the binding of metals to the surfaces of algae.
Journal ArticleDOI
Biosorbents for metal recovery
TL;DR: Inactivated, non-living microbial biomass can serve as a basis for development of potent biosorbent materials for concentration and recovery of strategic or valuable heavy metals, nuclear fuel or radioactive elements as mentioned in this paper.
Journal ArticleDOI
The chemical composition and structure of the cell wall of Chlorella pyrenoidosa.
Journal ArticleDOI
Remobilization of toxic heavy metals adsorbed to bacterial wall-clay composites.
TL;DR: It is apparent that remobilization of toxic heavy metals in sediments, soils, and the vadose zone is a complicated issue.