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Investigation of palladium sorption by humic substances in the context of application for selective extraction of PGM from sulfuric and hydrochloric acid solutionsтезисы доклада
- Авторы: Крючкова Д.С., Фаддеева А.С., Волков Д.С., Перминова И.В.
- Сборник: Book of Abstracts. Ninth International Conference of the CIS IHSS on humic innovative technologies "Humic substances and green technologies" (HIT-2024)
- Тезисы
- Год издания: 2024
- Место издания: Non-Commercial Partnership “Center for Biogenic Resources “Humus Sapiens” (NP CBR “Humus Sapiens”) Москва
- Первая страница: 42
- Последняя страница: 42
- Аннотация: This paper presents the results of a study of the sorption of palladium by humic substances from sulfuric and hydrochloric acid solutions. Palladium is a platinum group metal (MPG), the most valuable metal used as catalysts in the chemical industry, in medicine and is an indicator of the country's wealth. Russia is home to one of the largest palladium producers in the world. [1-3] In connection with the above, studies aimed at assessing the sorption capacity of humic substances with PGM in hydrochloric and sulfuric acid solutions in the presence of metals - chalk and nickel are relevant.It has been established that Pd is sorbed by humic substances (HC) in sulfuric acid solutions and is described by the Langmuir model, which indicates that the sorption centers are equivalent to each other and equal in energy. The maximum sorption capacity of GW to Pd is 5.5±0.4 mg/g R2=0.999. It was found that the degree of palladium extraction is practically not affected by the presence of iron in molar excess: 40, 400 and 1000. It was found that the degree of palladium extraction is practically not affected by the presence of copper, nickel and iron in 40-fold excess, including the presence of platinum in an equivalent amount. It has been established that Pd, Cu, Ni, Fe and micro quantities of Pt pass into the sediment of HC, while the mass fraction of metals (counting only metals) in the sediment is 44% Fe, 22% Cu, 16% Ni, 15% Pd and 1% Pt; and the molar fraction of metals (counting only metals): 51.3% Fe, 21.9% Cu, 17.3% Ni, 9.1% Pd and 0.4% PtAcknowledgements. This research was partially supported under the State Budgetary Task 122040600057-3.
- Добавил в систему: Владимиров Сергей Алимович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | HIT-2024-abstractbook-42.pdf | 115,8 КБ | 13 декабря 2024 [Vladimirov] |