以弱碱性树脂吸附2-萘磺酸/硫酸混合液相平衡

Adsorption of β- Naphthalenesulfonic acid/Sulfuric Acid from Water By Weak Basic Resin

研究考察了β 萘磺酸(NSA)和硫酸在弱碱性D301R树脂上的单组分、双组分吸附行为。研究表明,硫酸在D301R树脂上的吸附容量远大于NSA。分别采用Langmuir和Freundlich模型对单组分试验数据进行了拟合。建立了多组分MAST模型用来预测NSA和硫酸在弱碱性D301R树脂上竞争吸附相平衡,取得了令人满意的结果。

Singleand bisolute competitive adsorption were carried out to investigate the adsorption behavior of βNaphthalenesulfonic acid(NSA) and sulfuric acid, from water at 25 ℃ onto the weak basic D301R resin Adsorption affinity of sulfuric acid on D301R was found to be much higher than that of NSA The singlesolute adsorption data were fitted to the Langmuir model and the Freundlich adsorption models The ideal adsorbed solution theory(IAST) coupled with the singlesolute adsorption models was used to predict the bisolute competitive adsorption equilibria The IAST coupled with the Langmuir and the Freundlich models for sulfuric acid and NSA, respectively, yielded the most favorable representation of the bisolute competitive adsorption behavior