Metal ion binding by biological surfaces: Voltammetric assessment in the presence of bacteria

Lurdes, María de; Gonçalves, Simões; Sigg, Laura; Reutlinger, Max; Stumm, Werner

doi:10.1016/0048-9697(87)90411-6

Cited by 85 publications

(4 citation statements)

References 4 publications

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“…This phenomenon, known as biosorption, has attracted increasing research interests recently. Cell walls may represent a significant portion of the surface area exposed to both surface waters (Geesey et al, 1977) and soil fluids (Mahmood and Rama, 1993), the effects of cell walls on metal mobilities in these systems have been reported (de Lurdes et al, 1987;Chen, 1997;Zakir Hossain et al, 2006), however the role in controlling metal translocation and storage in hyperaccumulator are still poorly understood. At the end of a 30 min short time radioisotope loading period, comparable amounts of 65 Zn were accumulated in the roots of the two S. alfredii ecotypes.…”

Section: Discussionmentioning

confidence: 99%

Zinc adsorption and desorption characteristics in root cell wall involving zinc hyperaccumulation in Sedum alfredii Hance

Yang

Meng

et al. 2007

J. Zhejiang Univ. - Sci. B

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Radiotracer techniques were employed to characterize 65 Zn adsorption and desorption in root-cell-wall of hyperaccumulating ecotype (HE) and non-hyperaccumulating ecotype (NHE) species of Sedum alfredii Hance. The results indicated that at the end of a 30 min short time radioisotope loading period, comparable amounts of 65 Zn were accumulated in the roots of the two ecotypes Sedum alfredii, whereas 2.1-fold more 65 Zn remains in NHE root after 45-min desorption. At the end of 60 min uptake period, no difference of 65 Zn accumulation was observed in undesorbed root-cell-wall of Sedum alfredii. However, 3.0-fold more 65 Zn accumulated in desorbed root-cell-wall of NHE. Zn 2+ binding in root-cell-wall preparations of NHE was greater than that in HE under high Zn 2+ concentration. All these results suggested that root-cell-wall of the two ecotypes Sedum alfredii had the same ability to adsorb Zn 2+ , whereas the desorption characteristics were different, and with most of 65 Zn binding on root of HE being available for loading into the xylem, as a result, more 65 Zn was translocated to the shoot.

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Section: Discussionmentioning

confidence: 99%

Zinc adsorption and desorption characteristics in root cell wall involving zinc hyperaccumulation in Sedum alfredii Hance

Yang

Meng

et al. 2007

J. Zhejiang Univ. - Sci. B

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“…Bacterial cell walls have a strong affinity for metal cations in aqueous solution [5][6][7]. Bioassays show that the negative charge of the cell wall comes mainly from carboxyl, phosphate, and hydroxyl groups distributed on the cell surface [8] under natural conditions and in contaminated water systems [9].…”

Section: Current Ongoing Solutionmentioning

confidence: 99%

Biogas Production—The Effect of the Zinc Concentration on the Profile of Volatile Fatty Acids in Fermentation Mixtures

Cichosz,

Łazarski,

Butarewicz

et al. 2023

Energies

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The development of renewable energy sources is one of the most important paths for today’s economy to follow. Currently, the process of obtaining energy from the combustion of methane extracted by methane fermentation is gaining importance. To improve its efficiency and the speed of the fermentation process and enzyme activation, this study analyzed the effect of the addition of zinc as a micronutrient to fermentation processes using corn silage. The zinc concentration in the fermenter required to stimulate fermentation processes was determined. Studies were conducted to determine inhibitory and toxic concentrations. The determination of the influence of zinc ions on the VFA profile and the value of the carbon-to-methane conversion coefficient is important for the economic aspects of obtaining biogas with the highest methane content. The carbon-to-methane conversion factor and the effect of the addition of zinc on the value of this factor were determined. During the course of the research, modern analytical chemistry methods and techniques were used. The purpose of this study was to determine the optimal concentration of zinc in the digester to maximize the methane yield of the fermentation process.

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“…Gram-positive bacteria do not contain outer membrane but are surrounded by several layers of peptidoglycan. Long anionic polymers, named teichoic acids, are thread onto these layers of peptidoglycan [16,17]. Cyanobacteria cell wall presents a similar chemical composition to Gram-negative bacteria, being peptidoglycan the principal component.…”

Section: Classes Of Biological Substrates Used For Elemental Determin...mentioning

confidence: 99%

Biological substrates: Green alternatives in trace elemental preconcentration and speciation analysis

Escudero

Maniero

Agostini

et al. 2016

TrAC Trends in Analytical Chemistry

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Metal ion binding by biological surfaces: Voltammetric assessment in the presence of bacteria

Cited by 85 publications

References 4 publications

Zinc adsorption and desorption characteristics in root cell wall involving zinc hyperaccumulation in Sedum alfredii Hance

Zinc adsorption and desorption characteristics in root cell wall involving zinc hyperaccumulation in Sedum alfredii Hance

Biogas Production—The Effect of the Zinc Concentration on the Profile of Volatile Fatty Acids in Fermentation Mixtures

Biological substrates: Green alternatives in trace elemental preconcentration and speciation analysis

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