摘要
实验考察了超声、硝酸预处理、酸化程度、碱液浓度、反应温度、液固比、反应时间等对腐植酸提取率的影响,并通过正交设计选择最佳预氧化条件和褐煤腐植酸的最佳提取条件。结果表明:超声硝酸联合氧化法提取腐植酸的最佳条件为:超声频率80kHz,氧化温度50℃,硝酸液固比(mL/g)为5∶1,氧化时间90min,硝酸浓度1.5mo l/L。
The influence of ultrasonic,nitric acid pretreatment,degree of acidification,concentration of alkali solution,reaction temperature,ratio of liquid and solid,reaction time on extraction ratio of humic acid were discussed in the paper,and optimum preoxidizing condition and optimum extraction condition of humic acid from lignite were decided by orthogonal experiment design.The result show the optimum of extraction humic acid combine ultrasonic nitric and oxidizing,and the optimum condition.the frequency of ultrasonic is 80kHz,oxidation temperature is 50℃,ratio of nitric and solid is 5:1,oxidation time is 90min,concentration of nitric is 1.5mol/L.
作者
高丽娟
杨小莹
王世强
赵雪飞
GAO Li-Juan;YANG Xiao-Ying;WANG Shi-Qiang;ZHAO Xue-Fei(School of Chemical Engineering,University of Science and Technology Liqoning,Anshan,Liaoning 114051,P.R.China)
出处
《光谱实验室》
CAS
2013年第6期2955-2959,共5页
Chinese Journal of Spectroscopy Laboratory
基金
辽宁科技大学专项基金资助项目(2012TD01)
关键词
腐植酸
褐煤
正交设计
提取率
Humie Acid
Lignite
Orthogonal Experiment Design
Extraction Ratio
