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Stępniewska, Zofia; Bucior, K.

doi:10.1023/a:1012247230682

Cited by 14 publications

(2 citation statements)

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“…After 10 years the level of chromium contents in soils, waters and plants were re-analysed [17]. Five years later (in 2004) environmental samples (soils, plants and water) were investigated again [6].…”

Section: Site Location and Descriptionmentioning

confidence: 99%

The influence of old leather tannery district on chromium contamination of soils, water and plants

Wolińska¹,

Stępniewska²,

Wlosek³

2013

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Section: Site Location and Descriptionmentioning

confidence: 99%

The influence of old leather tannery district on chromium contamination of soils, water and plants

Wolińska¹,

Stępniewska²,

Wlosek³

2013

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“…In Brazil this solid waste, after removal from the wastewater, is an hazardous material that needs treatment and appropriate disposal. Several studies related to characterization treatments and contamination of tannery waste have been performed [3,4,5,6]. The application of stabilization/solidification process in cement intends to be an effective treatment for final disposal of solid waste containing chromium.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of S/S Process of Tannery Waste in Cement by Structural and Mechanical Analysis

Pinto

Dweck

Sansalone

et al. 2010

MSF

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This paper presents a study of a stabilization/solidification (S/S) process of a tannery waste containing chromium. In this process a mixture of cement, water and the waste is solidified during hydration of the former. Stabilization occurs by the reaction of the chromium components of the waste with the calcium hydroxide formed during the process. A rigid block is obtained with low hazardous of contamination of soil and groundwater after its disposal into industrial landfill. Mixtures were prepared adding dried tannery waste in 10, 15 and 20% of the Portland cement mass. Sodium bentonite and organoclays in 5 % of cement mass were used as additives. Solidified specimens were analyzed after 28 days of hydration time by solid-state 29Si nuclear magnetic resonance (NMR) spectroscopy and unconfined compressive strength analysis. The increase of tannery waste content and the presence of the additives reduce silica polymerization as well as the mechanical strength of the solidified bodies.

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Fe(III), Cr(VI), and Fe(III) mediated Cr(VI) reduction in alkaline media using a Halomonas isolate from Soap Lake, Washington

et al. 2008

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Hexavalent chromium is one of the most widely distributed environmental contaminants. Given the carcinogenic and mutagenic consequences of Cr(VI) exposure, the release of Cr(VI) into the environment has long been a major concern. While many reports of microbial Cr(VI) reduction are in circulation, very few have demonstrated Cr(VI) reduction under alkaline conditions. Since Cr(VI) exhibits higher mobility in alkaline soils relative to pH neutral soils, and since Cr contamination of alkaline soils is associated with a number of industrial activities, microbial Cr(VI) reduction under alkaline conditions requires attention.Soda lakes are the most stable alkaline environments on earth, and contain a wide diversity of alkaliphilic organisms. In this study, a bacterial isolate belonging to the Halomonas genus was obtained from Soap Lake, a chemically stratified alkaline lake located in central Washington State. The ability of this isolate to reduce Cr(VI) and Fe(III) was assessed under alkaline (pH = 9), anoxic, non-growth conditions with acetate as an electron donor. Metal reduction rates were quantified using Monod kinetics. In addition, Cr(VI) reduction experiments were carried out in the presence of Fe(III) to evaluate the possible enhancement of Cr(VI) reduction rates through electron shuttling mechanisms. While Fe(III) reduction rates were slow compared to previously reported rates, Cr(VI) reduction rates fell within range of previously reported rates.

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Cited by 14 publications

References 1 publication

The influence of old leather tannery district on chromium contamination of soils, water and plants

The influence of old leather tannery district on chromium contamination of soils, water and plants

Evaluation of S/S Process of Tannery Waste in Cement by Structural and Mechanical Analysis

Fe(III), Cr(VI), and Fe(III) mediated Cr(VI) reduction in alkaline media using a Halomonas isolate from Soap Lake, Washington

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