低碳醇对α-烯烃磺酸盐吸附性能的影响

THE INFLUENCE OF LOW CARBON ALCOHOLS ON ADSORPTION PROPERTIES OFα-OLEFINE SULFONATE

研究了低碳醇对α-烯烃磺酸钠(AOS)的吸附性能的影响,并对低碳醇降低AOS吸附量的机理进行了探讨。实验发现:0.1%的AOS在高岭土上吸附量大,为5.1mg/g;加入低碳醇后可以在一定程度上降低AOS的吸附量,随醇碳数增大,降低吸附量越多,醇质量分数为0.5%时乙醇降低AOS吸附量0.67mg/g,异戊醇降低AOS吸附量1.21mg/g;当CaCl2和NaCl质量分数增加到一定值时,AOS在石英砂上的吸附量急剧增加,CaCl2质量分数为0.1%和NaCl质量分数为8%时AOS吸附量分别为7.7mg/g和6.2mg/g,低碳醇的加入可以大大降低高矿化度下AOS的吸附量,且醇碳数越高,效果越好。

The influence of low carbon alcohols on the adsorption performance of α-olefine sodium sulfonate was studied. The decrease of AOS adsorption by low carbon alcohols was checked. The results show that the adsorbance of 0.1% AOS on kaoline is 5.1 mg/g, which is a large number. The addition of low carbon alcohol can reduce the adsorbance of AOS to some extent, and the adsorbance of AOS decreases with the increase of carbon number of alcohols. Ethanol and isoamyl alcohol can decrease the adsorbance of AOS by 0.67 mg/g and 1.21 mg/g respectively when alcohol concentration is 0.5 %. The adsorbance of AOS on quartz sand increase sharply when concentration of NaCl and CaCl2 increase to a certain degree. The adsorbance of AOS is 7.7 mg/g and 6.2 mg/g when concentration of CaCl2 and NaCl is 0.1% and 8% respectively. The addition of low carbon alcohol can significantly reduce the adsorbance of AOS in high salinity. Besides, the adsorbance of AOS decreases with the carbon number of alcohols.