Biosorption of cobalt(II) and nickel(II) by seaweeds: batch and column studies

Vijayaraghavan, K.; Jegan, J.; Palanivelu, K.; Velan, M.

doi:10.1016/j.seppur.2004.12.003

Cited by 161 publications

(69 citation statements)

References 16 publications

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“…Several investigations regarding metal adsorption by brown algae have been carried out and high adsorption efficiencies for nickel, copper, chromium, cadmium, mercury, zinc, iron and cobalt have been reported (Saravanan et al 2011;Vijayaraghavan et al 2005;Padilha et al 2005;Cossich et al 2002). It is believed that the adsorption potential of these species mainly depends on their cellular structure and number of binding sites (Fourest and Volesky 1996) and also, on biomass dosage, concentration of metal ions and pH of the aqueous solution (Das et al 2008;Davis et al 2000).…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…on the green alga Pithophora oedogonia was reported to also be well modelled by both models (Singh et al 2008). It is fairly well known that metal desorption mainly involves the process of ion exchange, in which protons or other ions of the desorbing agent replace metal ions from the binding sites (Metha and Guar 2005;Vijayraghavan et al 2005).…”

Section: Ho and Mckaymentioning

confidence: 89%

Biosorption of lead from acid solution using chitosan as a supporting material for spore forming-fungal biomass encapsulation

Lang

Buranaboripan

Wongchawalit

et al. 2013

Int. J. Environ. Sci. Technol.

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Asexual spores of the filamentous fungus Rhizopus arrhizus were used as the resting biomass as they tolerate chitosan gelling for mycelia growing in chitosan beads. Biosorption of lead using the dead detergent pretreated chitosan-immobilised and grown fungal beads was performed with initial lead (II) nitrate concentrations ranging from 9.02 to 281.65 mg/L. The adsorption data were best correlated with equilibrium adsorption isotherms in the order Redlich-Peterson, Langmuir, Freundlich and Fritz-Schlünder by non-linear regression. The biosorption kinetic model of pseudo second-order (R 2 [ 0.99) fitted better than pseudo first-order and modified pseudo firstorder models. Among the four pseudo second-order kinetic models, the Blanchard model was the best fit for the experimental biosorption data. The rate-limiting step of biosorption of lead was shown to be intraparticle diffusion controlled according to Weber and Morris model fitting. The beads could be regenerated using 1 M nitric acid solution. This illustrated the good performance of the beads for regenerated sorption/desorption at least five cycles.

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“…This operational mode is more appropriate for large-scale applications in industry than other types of reactors as such agitated tanks, fluidized-bed columns, etc. The fixed-bed columns have a series of advantages: they have simple operation, they achieve large yields, and they have ease scale-up from procedures in laboratorial scale (Borba et al, 2006;Borba et al, 2008;Valdman et al, 2001;Vijayaraghavan et al, 2005;Vijayaraghavan & Prabu, 2006). The use of fixed-bed columns allow to avoid separation difficulties between the biosorbent and the effluent (Kentish & Stevens, 2001).…”

Section: Biosorption In Fixed-bed Columnsmentioning

confidence: 99%

“…There is broad literature that describes the effects of operational parameters to augment and to improve the biosorption in fixed-bed columns (Chu, 2004;Hashim & Chu, 2004;Kratochvil & Volesky, 2000;Naddafi et al, 2007;Oliveira, 2007;Oliveira, 2001;Valdman et al, 2001;Vieira et al, 2008;Vijayaraghavan et al, 2005;Vijayaraghavan et al, 2008;Vijayaraghavan & Prabu, 2006;Volesky et al, 2003). These parameters modified mainly related are: flow rate, feeding concentration, height of packed-bed column, porosity, mass of biomass, etc.…”

Section: Dependence Of the Operational Parametersmentioning

confidence: 99%

Biosorption of Metals: State of the Art, General Features, and Potential Applications for Environmental and Technological Processes

Oliveira¹,

Palmieri²,

Garcia³

2011

Progress in Biomass and Bioenergy Production

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Biosorption of cobalt(II) and nickel(II) by seaweeds: batch and column studies

Cited by 161 publications

References 16 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

Biosorption of lead from acid solution using chitosan as a supporting material for spore forming-fungal biomass encapsulation

Biosorption of Metals: State of the Art, General Features, and Potential Applications for Environmental and Technological Processes

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