Screening of leather auxiliaries for their role in toxic hexavalent chromium formation in leather—posing potential health hazards to the users

Babu, N. K. Chandra; Asma, K.; Raghupathi, A.; Venba, R.; Ramesh, R.; Sadulla, S.

doi:10.1016/j.jclepro.2004.07.003

Cited by 44 publications

(18 citation statements)

References 13 publications

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“…The plating of metals that are prone to corrosion with chromium to prevents the oxidation process [2]. Other major industrial applications include pigments, paints, and leather tanning [3]. Exposure to the chromium can cause environmental and human health problems.…”

Section: Introductionmentioning

confidence: 99%

Sorption of Cr(III) and Cr(VI) to high and low pressure synthetic nano-magnetite (Fe3O4)particles

Parsons¹,

Hernandez

González

et al. 2014

Chemical Engineering Journal

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The binding of Cr(III) and Cr(VI) to synthetic nano-magnetie particles synthesized under open vessel conditions and a microwave assisted hydrothermal synthesis techniques was investigated. Batch studies showed that the binding of both the Cr(III) and Cr(VI) bound to the nano-materials in a pH dependent manner. The Cr(III) maximized at binding at pH 4 and 100% binding. Similarly, the Cr(VI) ions showed a maximum binding of 100% at pH 4. The data from the time dependency studies showed for the most part the majority of the binding occurred within the first 5 minutes of contact with the nanomaterial and remained constant thereafter. In addition, the effects of the possible interferences were investigated which showed some effects on the binding of both Cr(III) and Cr(VI). However, the interferences never completely eliminated the chromium binding. Isotherm studies conducted at room temperature showed the microwave synthesized nanomaterials had a binding capacity of 1208 ± 43.9 mg/g and 555 ± 10.5 mg/g for Cr(VI) and Cr(III), respectively. However, the microwave assisted synthesized nanomaterials had capacities of 1705 ± 14.5 and 555± 10.5 mg/g for Cr(VI) and Cr(III), respectively. XANES studies showed the Cr(VI) was reduced to Cr(III), and the Cr(III) remained as Cr(III). In addition, the XANES studies indicated that the chromium remained coordinated in an octahedral arrangement of oxygen atoms.

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Section: Introductionmentioning

confidence: 99%

Sorption of Cr(III) and Cr(VI) to high and low pressure synthetic nano-magnetite (Fe3O4)particles

Parsons¹,

Hernandez

González

et al. 2014

Chemical Engineering Journal

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show abstract

“…Cr(VI) usually occurs as the highly soluble anion. The main sources of chromium pollution are mining, leather tanning, cement industries, electro plating, production of steel and other metal alloys, photographic material, and corrosive paints [5][6][7]. The hexavalent form of chromium has been demonstrated to be associated with the toxic parameters and classified as human carcinogen and mutagen [8].…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Mechanistic Study of the Reduction of Chromium(VI) by Lactic Acid

Wang

Song

et al. 2008

International Journal of Inorganic Chemistry

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The kinetics and mechanism of the reduction of chromium(VI) by lactic acid (Lac) in aqueous acidic medium was studied with spectrophotometry in a temperature range of 298.15 K∼313. . There is no salt effect. Based on the experimental results, a probable reaction mechanism of oxidation was proposed. The rate equation derived from the mechanism could explain all the experimental phenomena. Activation parameters along with rate constant of the rate-determining step have been evaluated.

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“…Osman et al (2013) studied effects of zeolite and ferrochromium slag in making clay bricks. Chandra-Babu et al (2005) showed effects on residual Cr(VI) in leather auxiliaries while Padma et al (2013) explained methods of bio-sorption to remove Cr(VI) from dye effluent. explained procedure of manufacturing bricks from Cr(VI).…”

Section: Introductionmentioning

confidence: 99%

Cleaner production of basic chromium sulfate – with a review of sustainable green production options

Panda

Selvasekhar

Murugan

et al. 2016

Journal of Cleaner Production

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Screening of leather auxiliaries for their role in toxic hexavalent chromium formation in leather—posing potential health hazards to the users

Cited by 44 publications

References 13 publications

Sorption of Cr(III) and Cr(VI) to high and low pressure synthetic nano-magnetite (Fe3O4)particles

Sorption of Cr(III) and Cr(VI) to high and low pressure synthetic nano-magnetite (Fe3O4)particles

Kinetic and Mechanistic Study of the Reduction of Chromium(VI) by Lactic Acid

Cleaner production of basic chromium sulfate – with a review of sustainable green production options

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