Biosorption of metals in brown seaweed biomass

Figueira, M. M.; Volesky, B.; Ciminelli, Virgínia S. T.; Roddick, Felicity

doi:10.1016/s0043-1354(99)00120-7

Cited by 283 publications

(128 citation statements)

References 26 publications

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“…Natural waters can easily be polluted by metal ions as a result of their release by industrial plants or mining activities [9][10][11][12]. The interactions between microorganisms and metals in water have attracted a significant attention in recent years [13][14][15][16][17][18][19][20][21]. In order to explain the biological phenomenon, researchers have applied different kinds of chemical and physical ways to investigate the interactions between the biomass and the heavy metals, such as potentiometric and conductomet- * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Pan

Liu

et al. 2006

Colloids and Surfaces B: Biointerfaces

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In order to elucidate the potential mechanisms involved in the biosorption of metal ions, atomic force microscopy (AFM) and Fourier transform infrared (FT-IR) spectroscopy were used to characterize the interaction between Pb 2+ and Bacillus cereus. AFM imaging of the biomass surfaces exposed to different concentrations of lead ions solution showed a major morphological change occurred after Pb 2+ biosorption. The FT-IR spectra indicated the binding characteristics of the lead ions involved the carboxyl, hydroxyl and amino groups in the biomass. Equilibrium biosorption experiments of Pb 2+ were carried out to investigate the effects of pH values and the initial metal concentrations. The experimental isotherm data were then modeled using Langmuir, Freundlich, and Redlich-Peterson isotherm equations. As a result, the Redlich-Peterson model yielded the best fit of experimental data. Kinetics experiments showed the biosorption was a rapid process and the pseudo-second-order model was successfully applied to predict the rate constant of biosorption.

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Section: Introductionmentioning

confidence: 99%

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Pan

Liu

et al. 2006

Colloids and Surfaces B: Biointerfaces

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“…The amino group as the functional groups for adsorption accompanied by stoichiometric release of protons with the pH changing. [22,23]. While pH of the solution approached 8, the colloidal suspension occurred.…”

Section: Influence Of Solution Initial Phmentioning

confidence: 99%

Copper (II) Removed from Aqueous Solutions by Aminated Bagasse Pith

Liu¹,

Nie²,

Wang³

2016

JRST

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ABSTRACT:The paper investigated the heavy metal ions adsorption by bio-adsorbent obtained from modifying bagasse pith. The bagasse pith, a main solid bio-waste from sugar and pulp industry, was treated by epichlorohydrin and diethylenetriamine. The pith before and after modification were analyzed to characterize its structure change by Fourier Transform Infrared Spectroscopy and Scanning Electron Microscope. It shown that numbers of minor fragments cohere to the surface of fibrous bundle of modified pith. The carboxyl groups has been introduced with the change of substitutional groups in aromatic skeletal of lignin on surface of pith. The kinetics and thermo-dynamic properties were studied. The results shown the adsorption process are well described by Langmuir isotherm and pseudo-2nd order model. It is considered that the bagasse pith, a renewable bio-waste, would be modified to treat the waste water polluted by heavy metal in further studies.

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“…El proceso de bioadsorción de los metales pesados por algas marinas pretratadas es una excelente opción para la descontaminación de distintos efluentes acuosos (Figueira et al, 2004;Kratochvil y Volesky, 2000;Schmitt et al, 2001), debido a esto se decidió estudiar el proceso en un medio orgánico con la finalidad de remover algunos metales pesados presentes en los aceites lubricantes usados. Esta aplicación es una innovación tecnológica, ya que en la literatura son solamente encontrados estudios aplicados para sistemas acuosos.…”

Section: Introductionunclassified

Estudio del Mecanismo de Remoción de Hierro y Cobre presentes en Aceites Lubricantes Usados Mediante Bioadsorción

et al. 2008

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ResumenEn este trabajo se utilizó como biomasa el alga marina Sargassum sp. para estudiar la influencia de la velocidad de agitación, la temperatura y la concentración inicial de biomasa en la remoción de hierro y cobre presentes en aceites lubricantes usados. Se realizó un diseño experimental y un estudio cinético. Los experimentos fueron llevados a cabo con muestras de aceites lubricantes usados y cantidades pre-determinadas de algas durante tiempo suficiente para que la mezcla alcance el equilibrio. A partir de los resultados obtenidos se observó que en las condiciones estudiadas, a medida que la cantidad de biomasa aumenta es menor la capacidad de adsorción del hierro y del cobre, probablemente debido a una disminución del área interfacial de contacto. El estudio muestra que es posible obtener una función que muestre el nivel de influencia de cada una de las variables del sistema. Palabras clave: aceite lubricante usado, bioadsorción, sargassum sp., remoción de metales Study of the Removal Mechanism of Iron and Copper from Used Lubricant Oils trough Bioadsorption AbstractIn this study biomass of the marine alga Sargassum sp was used to study the influence of agitation velocity, temperature and initial biomass concentration on the removal of iron and copper from used lubricant oils. An experimental design and a kinetic study were done. The experiments were carried out using samples of used lubricant oils and predetermined amounts of algae allowing sufficient time for the mixture to reach equilibrium conditions. The results showed that, under the conditions studied, the larger the amount of biomass present, the lower the adsorption capacity of iron and copper, probably due to a decrease in interfacial contact area. The study shows that it is possible to obtain a function that represents the influence of each of the variables that shows the degree of influence of each of the system variables.

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Biosorption of metals in brown seaweed biomass

Cited by 283 publications

References 26 publications

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Copper (II) Removed from Aqueous Solutions by Aminated Bagasse Pith

Estudio del Mecanismo de Remoción de Hierro y Cobre presentes en Aceites Lubricantes Usados Mediante Bioadsorción

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