Zinc and cadmium biosorption by untreated and calcium-treated Macrocystis pyrifera in a batch system

Cazón, Josefina Plaza; Bernardelli, C. E.; Viera, Marisa; Donati, Edgardo R.; Guibal, Eric

doi:10.1016/j.biortech.2012.04.014

Cited by 52 publications

(17 citation statements)

References 34 publications

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“…However, due to low costs and availability industrial waste biomass and seaweed biomass are considered the most adequate for environmental applications at commercial scale. Seaweed biomass offers excellent metal-sorbing properties (Romera et al 2007;Plaza Cazón et al 2012b). Undaria pinnatifida is a brown alga (Phaeophyta) that grows in water along the south coast of Argentina.…”

Section: Introductionmentioning

confidence: 99%

Application of Integrated Microbial Processes for Heavy Metal Recovery from Industrial Wastes of Buenos Aires, Argentina

Cazón

Yagnentovsky

Viera

et al. 2014

Bioremediation in Latin America

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To allow the final disposal of galvanic sludge from a wastewater treatment plant of automotive factory, integrated microbial processes were performed to release and recover nickel and zinc contained in the solid residue. The metals were successfully leached using sulfuric acid continuously produced by Acidithiobacillus thiooxidans biofilm on elemental sulfur. The best condition using a sludge pulp density of 1 % w/v and a dilution rate of 0.22 h −1 100 % allowed more than 90 % of nickel and zinc dissolution, respectively; higher values of dilution rate and/or pulp density decreased the percentages of metal dissolution. The recovery of metals from the leachates was performed by continuous adsorption on Undaria pinnatifida biomass after raising the pH up to 4. Adsorption processes allowed great recoveries of nickel and zinc from monometallic solutions at the lowest flow rate (100 and 90 %); the recoveries from the leachates were not so good and to increase them three fixed bed columns in series were used reaching approximately 50 and 80 % of nickel and zinc recovery respectively, even at high dilution rates (more than 1.5 h −1 ). This integrated process could be applied on a higher scale. IntroductionIndustrial activity generates wastes and sludges with high heavy-metal content, and their inadequate disposal can cause serious environmental impacts whether those heavy metals are mobilized and reach soils and groundwater. The mobility of the heavy metals from the wastes in aqueous system is a cause of concern because of their intrinsic solubility at varying pH, reduction-oxidation characteristics and

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Section: Introductionmentioning

confidence: 99%

Application of Integrated Microbial Processes for Heavy Metal Recovery from Industrial Wastes of Buenos Aires, Argentina

Cazón

Yagnentovsky

Viera

et al. 2014

Bioremediation in Latin America

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“…Plaza Cazón et al 2012used Macrocystis pyrifera to remove zinc and cadmium from wastewater, demonstrating its good uptake capacity and similar to other macroalgae species such as Sargassum filipendula, Gymnogongrus torulosus and Fucus vesiculosus, which are reported in previous works (Luna et al, 2010;Mata et al, 2008). The same group evaluated the use of M. pyrifera and Undaria pinnatifida for the chromium and mercury biosorption from aqueous solutions, demonstrating that the carboxylic and amino groups are strongly involved in chromium binding, while amino and sulfhydryl for mercury uptake (Plaza Cazón et al, 2012b).…”

Section: Introductionmentioning

confidence: 88%

Recovery of Copper from Leached-Tailing Solutions by Biosorption

Cortés¹,

Soto²,

Ordóñez³

2020

Preprint

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Mining is one of the main economic activities of several developing countries as Chile. Due to the progressive fall of the ore grades and the increasingly refractory composition of minerals, concentrating plants have increased that has led to an increase in the generation of tailings. Tailings, especially those obtained in the past, have remaining copper and other valuable species in quantities that can potentially be recovered, such as gold, silver, vanadium and rare earth elements. This transforms this abundant waste into a potential source of precious or strategic metals for secondary mining. One of the techniques of solid-liquid separation that allows the processing of solutions with low concentrations of metals corresponds to the adsorption, and more recently the biosorption, which is based on the use of biological matrices that do not constitute an environmental liability after application. Biosorption occurs as a consequence of the wide variety of active functional groups present in the different types of biomass. Bacterial, fungal, plant and algal biomasses have been described as biosorbents, mainly for the treatment of diluted and simple solutions. This work aims to recover copper from leached tailings using biomass of the red algae Gracilaria chilensis as a biosorbent. The tailing samples were taken from an abandoned deposit in the north of Chile and after an acid leaching copper was biosorbed, for which the kinetics of adsorption and the equilibrium isotherms were studied, applying the Freundlich and Langmuir models. Operational parameters such as adsorbent dose, pH and initial metal concentration were studied.

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“…However, the cost of this material is high [10]. Biosorbent materials were also made from different organisms, such as plant residues [11], yeast [12], fungus [13], and algae [14]. However, some of these materials have shortcomings.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Cd2+ by untreated dried powder of duckweed Lemna aequinoctialis

Chen

Yang

Jin

et al. 2015

Desalination and Water Treatment

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A B S T R A C TThe duckweed Lemna aequinoctialis was used as a biosorbent material for Cd 2+ adsorption in this study. Influencing factors of Cd 2+ adsorption by L. aequinoctialis in aqueous solution were investigated and the process of the Cd 2+ biosorption was optimized. The results of single-factor experiments suggested that all the factors studied except temperature had significant effects on the removal efficiency of Cd 2+ by L. aequinoctialis. Based on the results of single-factor experiments, optimization of the Cd 2+ biosorption was performed by varying four independent parameters using the central composite design under response surface methodology. The optimal conditions for the maximum removal of Cd 2+ were as follows: grain size of 150-200 mesh, stirring speed of 75 rpm, Cd 2+ initial concentration of 40 mg/L, and sorbent concentration of 8 g dry matter/L. The maximum removal efficiency of 83.5% was obtained, which was in consistence with the predicted value of 83.6%. This process followed pseudo-second-order kinetics and the experimental data fitted well to Langmuir and Freundlich isotherm models. The maximum capacity of duckweed to adsorb Cd 2+ was 33.0 mg/g, demonstrating that untreated dry powder of L. aequinoctialis represents a promising biosorbent for Cd 2+ removal. Fourier transform infrared spectroscopy analysis indicated that the -OH groups of carbohydrate compounds and the -NH 2 groups of amide compounds may be the main groups involved in the adsorption of Cd 2+ by L. aequinoctialis.

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Zinc and cadmium biosorption by untreated and calcium-treated Macrocystis pyrifera in a batch system

Cited by 52 publications

References 34 publications

Application of Integrated Microbial Processes for Heavy Metal Recovery from Industrial Wastes of Buenos Aires, Argentina

Application of Integrated Microbial Processes for Heavy Metal Recovery from Industrial Wastes of Buenos Aires, Argentina

Recovery of Copper from Leached-Tailing Solutions by Biosorption

Biosorption of Cd2+ by untreated dried powder of duckweed Lemna aequinoctialis

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