Adsorption of heavy metals by biomaterials derived from the marine alga Ecklonia maxima

Feng, Dongdong; Aldrich, Chris

doi:10.1016/s0304-386x(03)00138-5

Cited by 161 publications

(82 citation statements)

References 40 publications

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“…Several researches have investigated the effect of pH on biosorption of heavy metals using different kinds of microbial biomass and found that maximum biosorption occurred around neutral pH (Feng and Aldrich, 2004;Xue et al, 1988).…”

Section: Resultsmentioning

confidence: 99%

Removal of corper(II) Ions from aqueous solution by a lactic acid bacterium

Yılmaz

Tay

Kıvanç

et al. 2010

Braz. J. Chem. Eng.

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-Enterococcus faecium, a lactic acid bacterium (LAB), was evaluated for its ability to remove copper(II) ions from water. The effects of the pH, contact time, initial concentration of copper(II) ions, and temperature on the biosorption rate and capacity were studied. The initial concentrations of copper(II) ions used to determine the maximum amount of biosorbed copper(II) ions onto lyophilised lactic acid bacterium varied from 25 mg L -1 to 500 mg L -1 . Maximum biosorption capacities were attained at pH 5.0 and 6.0. Temperature variation between 20°C and 40°C did not affect the biosorption capacity of the bacterial biomass. The highest copper(II) ion removal capacity was 106.4 mg per g dry biomass. The correlation regression coefficients show that the biosorption process can be well defined by the Freundlich equation. The change in biosorption capacity with time was found to fit a pseudo-second-order equation.

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Section: Resultsmentioning

confidence: 99%

Removal of corper(II) Ions from aqueous solution by a lactic acid bacterium

Yılmaz

Tay

Kıvanç

et al. 2010

Braz. J. Chem. Eng.

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“…The studies of heavy-metal sorption kinetics by algae show that the time needed to attain the dynamic equilibrium depends, among others, on the type of algae and the degree of biomass fragmentation. The biomass of the marine alga Ecklonia maxima, with the thalli of 1.2 mm, attained the equilibrium during sorption of Cu, Pb and Cd after roughly 60 min, while for thalli of the size of 0.075 mm after grinding, the equilibrium stabilised after approximately 10 min [23]. It was found that the cosmopolitan alga Chlorella vullgaris and the freshwater alga Scenedesmus quadricauda sorb 90-95% of Cu within the first 15 min of the experiment (equilibrium is stabilised after approx.…”

Section: Kinetics and Equilibria In The Algae-solution Systemmentioning

confidence: 99%

“…It was observed that changes in pH of Cu 2+ and Pb 2+ salt solutions (analyte concentration in solution was 100 mg/dm 3 ) in the range 5.8 < pH < 8.5 did not have any effect on the concentration of the ions accumulated in the alga Ecklonia maxima. Lack of increase in copper and lead concentrations in algae may have been caused by precipitation of the insoluble hydroxides from the solution and at the same time a limitation of their sorption by the thalli [23]. A decrease of solution pHs (pH < 4) reduced the sorption of the analysed heavy metals.…”

Section: The Effect Of Physicochemical Factors On the Sorption Propermentioning

confidence: 99%

“…Together with the decrease in pH, the dissociation of carboxyl group of amino acids decreases (at pH = 2 it is totally receded). Under such conditions, a strong protonation of the amine group to NH 3 + takes place, which allows for a conclusion that in a strongly acid environment the amino acid particles are present in the form of a positive ion [16,23]. Biosorbents (DP95Ca and ER95Ca) developed on the basis of the marine alga Durvillaea potatorum and Ecklonia radiate sorbed 90% of the determined metal ions at pH = 4.5.…”

Section: The Effect Of Physicochemical Factors On the Sorption Propermentioning

confidence: 99%

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Algae - Heavy Metals Biosorbent / Glony - Biosorbent Metali Ciężkich

Rajfur

2013

Ecological Chemistry and Engineering S

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Abstract:The publication is a synthetic collection of information on the sorption properties of marine and freshwater algae. Kinetics and sorption equilibrium of heavy metals in algae-solution system, influence of abiotic factors on the process of sorption and desorption of analytes from biomass are discussed. In paper the results of laboratory tests conducted using different species and types of algae, which purpose was to assess their usefulness as natural sorbents, are described. The conclusions drawn from current research confirm the results from literature.

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“…The redistribution of Cr 2 O 3 to gangue minerals can lower the efficiency of the physical separation plants [3]. Different beneficiation techniques such as gravity separation [4][5][6][7], flotation [8][9][10][11][12] or magnetic separation [13][14][15][16][17] can be applied to remove gangue minerals from the chromite concentrates.…”

Section: Introductionmentioning

confidence: 99%

Application of Full Factorial Experimental Design and Response Surface Methodology for Chromite Beneficiation by Knelson Concentrator

Sen

2016

Minerals

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Abstract:The present work is undertaken to determine the effect of operational variables, namely: feed rate, centrifugal force and fluidization water flow rate on the efficiency of Knelson concentrator for chromite ore beneficiation. A full factorial design with three factors at three levels and response surface methodology (RSM) were applied for this purpose. The quadratic models were developed to predict the concentrate Cr 2 O 3 grade and recovery as the process responses. The results suggest that all the variables affect the grade and recovery of the Cr 2 O 3 concentrate to some degree. However, the fluidization water rate was found as the most effective parameter.

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Adsorption of heavy metals by biomaterials derived from the marine alga Ecklonia maxima

Cited by 161 publications

References 40 publications

Removal of corper(II) Ions from aqueous solution by a lactic acid bacterium

Removal of corper(II) Ions from aqueous solution by a lactic acid bacterium

Algae - Heavy Metals Biosorbent / Glony - Biosorbent Metali Ciężkich

Application of Full Factorial Experimental Design and Response Surface Methodology for Chromite Beneficiation by Knelson Concentrator

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