Characterization and evaluation of copper and nickel biosorption on acidic algae Sargassum Filipendula

Kleinübing, Sirlei Jaiana; Vieira, Rodrigo Silveira; Beppu, Marisa Masumi; Guibal, Eric; Silva, Meuris Gurgel Carlos da

doi:10.1590/s1516-14392010000400018

Cited by 57 publications

(36 citation statements)

References 52 publications

(62 reference statements)

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“…The band of minor intensity at 2929.48 cm -1 corresponds to the asymmetric stretching vibrations of alkyl chains whereas that of medium intensity at 1635.50 cm -1 appeared due to C=O stretching vibrations (Kirova et al 2012). The relatively small absorption bands at 1422.51, 1254.34 and 1031.70 cm -1 are also assigned to the stretching vibrations of COOH and OH groups (Kirova et al 2012;Liu et al 2011;Kleinübing et al 2010). The broad band below 1000 cm -1 indicates the presence of long alkyl chain (Kirova et al 2012).…”

Section: Resultsmentioning

confidence: 99%

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

et al. 2017

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Natural as well as acid modified dead biomass of brown marine alga Sargassum sp. was employed for the elimination of cadmium and zinc ions from synthetic wastewater; batch mode experiments were carried out to optimize various factors like adsorbent dosage, contact time, pH, agitation speed and primary metal ions concentration at room temperature (298.15 K) for both types of adsorbents i.e. natural and acid treated. Application of Langmuir and Freundlich isotherms suggested that the modified biomass adsorbed better as compared to the natural one; though sorption on the natural biomass was a physical process while that on the modified one was a physico-chemical process and thus was relatively difficult. The quantity of cadmium ions adsorbed was greater than that of zinc ions. Adsorption equilibrium for the metal ions sorption on treated Sargassum sp. biomass was established within 60 min for both cadmium and zinc ions with 95.3 and 90.1% removal efficiencies, respectively, but it was greatly influenced by the pH of the solution. The optimal conditions in the batch experiments were as follows: cadmium ions were removed effectively using 0.5 g of adsorbent and 5 mg/L initial metal ions concentration at pH 4 and 150 rpm agitation speed whereas the best results for zinc ions were obtained with 1 g of adsorbent and 5 mg/L initial metal ions concentration at pH 3 and 200 rpm agitation speed. The experimental data fitted well to the pseudo first order model as the values of metal uptake capacities were in good agreement with the experimental values. Thermodynamic studies show that the process is spontaneous and endothermic in nature. Desorption and regeneration studies reveal that recovery of biosorbent is low.

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Section: Resultsmentioning

confidence: 99%

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

et al. 2017

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“…Fourier Transform Infrared (FT-IR) analysis has been frequently used to detect how vibrational frequencies (bands) vary in marine algae [13][14][15][16][17] . This technique offers excellent information on the nature of the present bands, allowing the identification of different functionalities on the cellular surface.…”

Section: Evaluation Of Functional Groups Presented In Marine Alga Sarmentioning

confidence: 99%

“…Kleinübing et al 13 studied the functional groups present in marine alga S. filipendula, before and after the bioadsorption of Cu 2+ and Ni 2+ metallic ions using FT-IR technique. The authors noticed that the carboxylic (COOH) and alcohol groups present in the alginate biopolymer, the sulfate (SO 3 ) groups present in the fucoidan biopolymer and the amino groups present in the proteins participate in the bioadsorption process of metallic ions.…”

Section: Changes After the Bioadsorption Of Different Metallic Ions Bmentioning

confidence: 99%

Extraction of alginate biopolymer present in marine alga sargassum filipendula and bioadsorption of metallic ions

et al. 2013

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This paper studies the bioadsorption of Pb 2+ , Cu 2+ , Cd 2+ and Zn 2+ ions by marine alga Sargassum filipendula and by the alginate biopolymer extracted from this alga. The objective is to evaluate the importance of this biopolymer in removing different metallic ions by the marine alga S. filipendula. In the equilibrium study, the same affinity order was observed for both bioadsorbents: Pb 2+ > Cu 2+ > Zn 2+ > Cd 2+ . For Pb 2+ and Cu 2+ ions when the alginate is isolated and acting as bioadsorbents, adsorption capacities greater than those found for the alga were observed, indicating that it is the main component responsible for the removal of metallic ions. For Zn 2+ and Cd 2+ ions, greater bioadsorption capacities were observed for the alga, indicating that other functional groups of the alga, such as sulfates and amino, are also important in the bioadsorption of these ions.

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“…Other low-cost adsorbents have been investigated, mainly using bioadsorbents, such as algae 11 and chitosan 12 . However, experiments carried out in fixed bed presented limited results.…”

Section: Introductionmentioning

confidence: 99%

Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems

2011

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Cu (II) removal equilibrium from aqueous solutions using calcined clays "Bofe" and "Verde-lodo" has been studied by batch and fixed-bed in static and dynamic systems, respectively. Analyses were performed for physicochemical characterization of clays using the techniques: X-ray fluorescence (XRF), thermogravimetry (TG), N 2 adsorption (BET) and Cationic Exchange Capacity (CEC). Batch experiments were performed at a constant temperature, adjusting the pH of the solution in contact with clays. Adsorption assays in fixed bed were conducted at the flow rate determined through mass transfer zone (MTZ). Langmuir and Freundlich models were adjusted to equilibrium data. The results of characterization indicated that the temperature of 500 °C is best suited for the calcination of the clays. The maximum adsorption capacity was higher for dynamic system than fixed bed compared to static system, enhancing from 0.0748 to 0.1371 and from 0.0599 to 0.22 mmol.g -1 of clay for "Bofe" and "Verde-lodo", respectively.

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Characterization and evaluation of copper and nickel biosorption on acidic algae Sargassum Filipendula

Cited by 57 publications

References 52 publications

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

Extraction of alginate biopolymer present in marine alga sargassum filipendula and bioadsorption of metallic ions

Cu(II) adsorption on modified bentonitic clays: different isotherm behaviors in static and dynamic systems

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