摘要
以风化煤为原料,采用碱溶酸析法提取腐植酸(HA),考察了碱液浓度、反应温度、反应时间对腐植酸的提取率的影响,结果显示:1.5%NaOH以及2%NaOH和Na2CO3的混和溶液提取率较高,分别为74.2%和75.956%。并通过红外光谱,分析了HA的基本结构。
Humic acid was extracted from weathered coal, which was treated by alkali solubilization and acid precipitation. The condition of extraction was studied through changing the concentration of alkali, the temperature and time of reaction.The result showed the rate of extraction was higher by using 1.5% NaOH and the mixture of 2% NaOH and Na2CO3 solution,and the rate were 74.2% and 75.956% respectively.Infrared spectra was studied in the basic structure of HA.
出处
《化工时刊》
CAS
2006年第6期10-12,共3页
Chemical Industry Times
关键词
风化煤
腐植酸
提取
红外光谱
weathered coal humic acid extraction infrared spectroscopy
