Reduction of Thallium(III) to Thallium(I) with Metallic Reductors

Rolf, R. F.; Leininger, Elmer

doi:10.1021/ac60147a029

Anal. Chem.

1959

DOI: 10.1021/ac60147a029

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Reduction of Thallium(III) to Thallium(I) with Metallic Reductors

R. F. Rolf¹,

Elmer Leininger²

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1984

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Cited by 14 publications

References 31 publications

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Enzymatic hydrolysis of sodium‐hydroxide‐pretreated sallow in an ultrafiltration membrane reactor

Ohlson

Trägårdh

Hahn‐Hägerdal

1984

Biotech & Bioengineering

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An ultrafiltration membrane reactor was used to investigate the recovery of biocatalysts during enzymatic hydrolysis of pretreated sallow. Product inhibition could be eliminated by continuous removal of products through the ultrafiltration membrane, thus retaining the macromolecular substrate and enzymes. In this way, the degree of conversion was improved from 40% in a batch hydrolysis to 95% (within 20 h), and the initial hydrolysis rate was increased up to seven times. The recovery studies were focused on mechanical deactivation and irreversible adsorption on to the nonconvertible fraction of the substrate. Cellulase deactivation during mechanical agitation was not significant, and the loss of activity was attributed mainly to strong adsorption of the enzymes onto undigested material. This process was studied in semicontinuous hydrolyses, where fresh substrate was added intermittently. The amount of reducing sugars produced in this experiment was 25.7 g/g enzyme, compared to 4.7 g/g enzyme in a batch hydrolysis.

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Enzymatic hydrolysis of sodium‐hydroxide‐pretreated sallow in an ultrafiltration membrane reactor

Ohlson

Trägårdh

Hahn‐Hägerdal

1984

Biotech & Bioengineering

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Limitations of the DNS assay for reducing sugars from saccharified lignocellulosics

Rivers

Gracheck

Woodford

et al. 1984

Biotech & Bioengineering

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An ultrafiltration membrane reactor for obtaining experimental reaction rates at defined concentrations of inhibiting sugars during enzymatic saccharification of alkali‐pretreated sallow: Formulation of a simple empirical rate equation

Frennesson¹,

Trägårdh²,

Hahn‐Hägerdal³

1985

Biotech & Bioengineering

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The kinetics of the enzymatic hydrolysis of sodium hydroxide-pretreated sallow were studied in an ultrafiltration membrane reactor in the presence of different concentrations of glucose. In the UF membrane reactor low-molecular-weight products were continuously removed at a low dilution rate and replaced by a buffer solution that contained different concentrations of glucose, which made it possible to keep the inhibiting product concentration constant throughout an experiment. The reaction rate was related to the degree of substrate conversion and a mathematical relationship was formulated that describes the influence of the product concentration on the rate coefficient.

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Reduction of Thallium(III) to Thallium(I) with Metallic Reductors

Cited by 14 publications

References 31 publications

Enzymatic hydrolysis of sodium‐hydroxide‐pretreated sallow in an ultrafiltration membrane reactor

Enzymatic hydrolysis of sodium‐hydroxide‐pretreated sallow in an ultrafiltration membrane reactor

Limitations of the DNS assay for reducing sugars from saccharified lignocellulosics

An ultrafiltration membrane reactor for obtaining experimental reaction rates at defined concentrations of inhibiting sugars during enzymatic saccharification of alkali‐pretreated sallow: Formulation of a simple empirical rate equation

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