煤气化渣对矿山废水中黄药的吸附性能研究

Study on the Adsorption Properties of Coal Gasification Slag to Xanthate in Mine Wastewater

这是一篇环境工程领域的论文。本论文以煤气化渣作为吸附剂,处理矿山废水中的正丁基钠黄药,通过X射线荧光分析仪、扫描电镜、傅里叶红外光谱仪以及比表面积和孔径分析对煤气化粗渣(CGCS)和煤气化细渣(CGFS)的成分、结构特征和表面性质进行了表征,结果表明,CGFS有着更发达的孔径结构和更大的比表面积。吸附实验研究表明,两种煤气化渣对正丁基钠黄药的吸附均符合Langmuir吸附等温线模型,是自发放热的过程,该吸附过程符合准二级动力学模型,吸附速率常数CGFS>CGCS。其中,CGFS对正丁基钠黄药的吸附性能优于CGCS,其最大吸附量可达181.95 mg/g。

This is an article in the field of environmental engineering.In this article,the composition,structural characteristics and surface properties of coal gasification crude slag(CGCS)and coal gasification fine slag(CGFS)were characterized by X-ray fluorescence analyzer,scanning electron microscopy,FTIR spectroscopy,specific surface area and pore size analysis,and the results showed that CGFS had a more developed pore size structure and larger specific surface area.The adsorption test results show that the adsorption of n-butyl sodium xanthate by the two coal gasification slags is consistent with the Langmuir adsorption isotherm model and is a spontaneous heat process,which conforms to the quasi-secondary kinetic model,and the adsorption rate constant CGFS>CGCS.Among them,the adsorption performance of CGFS to n-butyl sodium xantho can reach 181.95 mg/g due to CGCS.