Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101305
Title: Development of Technology of Arsenic Removal from Acidic Waste Solutions in the Form of Arsenic Trisulfide
Authors: Grebneva, A. A.
Subbotina, I. L.
Timofeev, K. L.
Maltsev, G. I.
Issue Date: 2020
Publisher: Knowledge E
Citation: Grebneva, A. A., Subbotina, I. L., Timofeev, K. L., Maltsev, G. I. (2020). Development of Technology of Arsenic Removal from Acidic Waste Solutions in the Form of Arsenic Trisulfide. KnE Materials Science, 6(1), 209–213. https://doi.org/10.18502/kms.v6i1.8069
Abstract: During the laboratory tests the conditions of arsenic removal from acidic waste solutions of metallurgical enterprise in the form of arsenic trisulfide were determined. The technology based on the reduction of pentavalent arsenic to trivalent state with sodium pyrosulfite solution and following arsenic trisulfide precipitation from acidic solution after treatment with sodium sulfide solution was proposed. The arsenic removal proceeds with mechanical stirring, dosing the calculated amounts of reagents and collecting emissions of hydrogen sulfide. With such treatment, about 95% of arsenic, which was in the initial solution, passes into the precipitate. An enlarged laboratory experiment was carried out and the precipitate with 42.6% of arsenic and 46.9% of sulfur was obtained. The precipitate yield was ∼25.7 kg (dry weight) out of 1 m3 of the initial arsenic containing solution.
Keywords: ARSENIC
ARSENIC TRISULFIDE
ACIDIC WASTE SOLUTIONS
SODIUM SULFIDE
SODIUM PYROSULFITE
URI: http://hdl.handle.net/10995/101305
Access: Creative Commons Attribution License
License text: https://creativecommons.org/licenses/by/4.0/
Conference name: IV Congress “Fundamental Research and Applied Developing of Recycling and Utilization Processes of Technogenic Formations” (TECHNOGEN 2019)
Conference date: 18.06.2019-21.06.2019
RSCI ID: 44686480
ISSN: 2519-1438
DOI: 10.18502/kms.v6i1.8069
Origin: IV Congress “Fundamental Research and Applied Developing of Recycling and Utilization Processes of Technogenic Formations” (TECHNOGEN 2019). — Ekaterinburg, 2020
Appears in Collections:Междисциплинарные конференции, семинары, сборники

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