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Browsing by Subject "brown coal"

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  • Production of humic substances from Zaysan brown coal 
    Aitbekova, A.; Sharafudinov, A.; Tantybayeva, B. (Nazarbayev University, 2013)
    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 ...