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《Humic Acid》 2018-03
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Research on Fractionated Humic Acid Extracted with Sodium Hydroxide from Inner Mongolia Baiyinhua Lignite

Zou Yunpeng;Liu Yunying;Zhao Xiaojing;Lin Zhihui;School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology;  
The hymatomelanic, black humic acid and the fulvic acid(HM+Hy A FA) were fractionated from the humic acid(HA) of Baiyinhua lignite by alkali extraction and analyzed the content by volumetric method. The factors influenced the extraction rate of HA were studied. The optimum experimental condition was determined with alkali concentration 0.5 mol/L, extraction time 5 h, acid separation pH 2, and the extraction rate of total humic acid was nearly 50%. IR spectrum proved that both HM+Hy A FA have aromatic acid structure, while FA contains more C-O-C, C-O-H, sulfonic group(-SO_3H) and thiol group(-SH).
【Fund】: 内蒙古自治区科技计划资助项目(项目编号201702027);; 2016年内蒙古科技大学“大学生科技创新基金项目”(项目编号2016062)
【CateGory Index】: O636.9
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