D301树脂对派拉丁黄GR的吸附性能研究

Static Adsorption Properties of D301 Resin to Palatin Yellow GR

研究了派拉丁黄GR的模拟染色废水絮凝后滤液中染料在D301树脂中的吸附行为.静态研究表明:在絮凝后滤液中染料的浓度范围内,吸附等温线符合Freundlich模型,吸附速率用La-gergren方程拟合是可靠的.对照研究了D301树脂、活性炭和煤渣上派拉丁黄GR的吸附能力,结果表明:D301树脂的吸附能力强于活性炭和煤渣,吸附剂的粒径为35目(425～600μm),废水pH值降低,温度升高可使染料的去除率提高,减小粒径和升高温度使D301树脂的吸附速率加快.动态吸附中浓度越大、流速越快越容易穿透.脱附率不高,有待进一步研究.

This paper studied the behavior of D301 resin in absorbing Palatin Yellow GR, which is in the filtrate from flocculation of simulated dyeing wastewater. The result reveals that D301 absorption isotherm is consistent to Freundlich＇ s Model, and it is reliable to use Lagergren＇ s Equation to simulate D301 resin adsorption thermodynamics within the concentration range of dye in the filtrate. The adsorption comparison for Palatin Yellow GR on D301 resin, active carbon and cinders indicates that the adsorption capacity of D301 resin is higher than that of active carbon and cinders when the particle size of D301 adsorbent is 35mu, and the removal efficiency of dye increases with higher temperature and lower pH value of filtrate, while the adsorption rate accelerates with smaller adsorbent size and higher temperature. Dye is much easier to penetrate in the dynamic adsorption when its concentration is higher and the velocity is faster. Desorption rate of D301 resin still needs further research.