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Production of humic substances from Zaysan brown coal

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dc.contributor.author Aitbekova, A.
dc.contributor.author Sharafudinov, A.
dc.contributor.author Tantybayeva, B.
dc.date.accessioned 2015-11-04T11:27:04Z
dc.date.available 2015-11-04T11:27:04Z
dc.date.issued 2013
dc.identifier.uri http://nur.nu.edu.kz/handle/123456789/774
dc.description.abstract In this research project, humic acids were obtained from activated coal samples by hydroxide and pyrophosphate methods. Activation was done using hydrochloric (HCl) and sulfuric (H2SO4) acids. Quantitative analysis shows that the optimal conditions that give the maximum yield of humic acids are activation by sulfuric acid with 1:8 ratio of solid to liquid phases, temperature of 40°C and extraction by pyrophosphate method. Coal samples were prepared according to the state standard 10742-71. The coal samples were activated by HCl and H2SO4 with solid to liquid ratio of 1:5, 1:8, and 1:10. The activation stage was performed at 25°C and 40°C. After the activation stage humic acids were extracted by hydroxide and pyrophosphate methods according to the state standard 9517-94. ru_RU
dc.language.iso en ru_RU
dc.publisher Nazarbayev University ru_RU
dc.subject first research week ru_RU
dc.subject humic substances ru_RU
dc.subject brown coal ru_RU
dc.title Production of humic substances from Zaysan brown coal ru_RU
dc.type Abstract ru_RU

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