Removal of Chromium from Aqueous Solutions Porous Materials Based on Local Forest Waste Wood Raw Materials (Bark and Chips)

Golovina, V. V.; Eremina, Anna O.; Sobolev, Anatoly A.; Чесноков, Николай В.

doi:10.17516/1998-2836-0017

Cited by 2 publications

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“…and Bagauv A.I. [39,40], chromium was extracted from solutions by logging wastes, namely bark and sawdust. Cherdchoo W. et al conducted studies on the adsorption of chromium on ground coffee and mixed tea waste [41].…”

Section: Literature Reviewmentioning

confidence: 99%

Method for Decontamination of Toxic Aluminochrome Catalyst Sludge by Reduction of Hexavalent Chromium

et al. 2023

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The article is devoted to the neutralization of the harmful effects of aluminochrome catalyst sludge. Catalyst sludge is a waste product from petrochemical production and poses a serious threat to the environment and humans because of the toxic hexavalent chromium it contains. The emissions of Russian petrochemical enterprises’ alumochrome sludge is 10,000–12,000 tons per year. In this paper, research related to the possibility of reducing the harmful effects of sludge by converting hexavalent chromium to a less dangerous trivalent state is presented. The reduction of hexavalent chromium was carried out with different reagents: Na2SO3, FeSO4, Na2S2O3, and Na2S2O5. Then, a comparative analysis was carried out, and sodium metabisulfite was chosen as the most preferred reagent. The peculiarity of the reducing method was carrying out the reaction in a neutral medium, pH = 7.0. The reduction was carried out in the temperature range of 60–85 °C and under standard conditions. The maximum recovery efficiency of chromium from the catalyst sludge (100%) was achieved at 85 °C and 10 min. This method did not involve the use of concentrated sulfuric acid, as in a number of common techniques, or additional reagents for the precipitation of chromium in the form of hydroxide.

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Section: Literature Reviewmentioning

confidence: 99%

Method for Decontamination of Toxic Aluminochrome Catalyst Sludge by Reduction of Hexavalent Chromium

et al. 2023

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Chemical Structure, Porous Morphology, and Sorption Properties of Adsorbents Produced from Organic Technogenic Substrates (A Review)

et al. 2021

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Removal of Chromium from Aqueous Solutions Porous Materials Based on Local Forest Waste Wood Raw Materials (Bark and Chips)

Abstract: The studied porous materials derived from forest waste wood raw material of the Krasnoyarsk territory.The bark and chips of wood (birch, larch and fir)

Cited by 2 publications

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Method for Decontamination of Toxic Aluminochrome Catalyst Sludge by Reduction of Hexavalent Chromium

Method for Decontamination of Toxic Aluminochrome Catalyst Sludge by Reduction of Hexavalent Chromium

Chemical Structure, Porous Morphology, and Sorption Properties of Adsorbents Produced from Organic Technogenic Substrates (A Review)

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