朱振华　张艺　李小敏

(1.伊犁师范学院污染物化学与环境治理重点实验室　新疆伊宁 835000；2.伊犁师范学院化学与环境科学学院　新疆伊宁 835000)



粉煤灰对水中酸性品红的吸附研究*

朱振华1，2张艺1，2李小敏1，2

(1.伊犁师范学院污染物化学与环境治理重点实验室新疆伊宁 835000；2.伊犁师范学院化学与环境科学学院新疆伊宁 835000)

摘要以粉煤灰为吸附剂，研究了粉煤灰对酸性品红的吸附效果。选取了粒径、投加量、温度、时间、转速、染料浓度6个因素进行单因素实验，研究了各个因素对粉煤灰的影响，研究表明，粉煤灰对酸性品红的吸附效果很好，最高去除率可达99.63%；并且从热力学和动力学两方面对粉煤灰吸附酸性品红的过程进行拟合，结果表明，粉煤灰对酸性品红吸附的热力学过程比较符合模型LangmuirEXT1，动力学过程比较符合准一级吸附动力学方程BoxLucas1。

关键词粉煤灰吸附酸性品红

Study on Adsorption of Acid Fuchsin in Water by Fly Ash

ZHU Zhenhua1，2ZHANG Yi1，2LI Xiaomin1，2

(1.KeyLaboratoryofPollutantsofChemicalandEnvironmentalControl,YiliNormalUniversityYining,Xinjiang835000)AbstractIn this paper, the adsorption of fly ash on acid fuchsin is studied by using fly ash as the adsorbent. 6 factors, such as diameter, dosage, temperature, time, speed and dye concentration, are selected to conduct single factor experiment and to study the effects of various factors on fly ash. The research shows that the adsorption of fly ash on acid fuchsin is satisfying and the highest removal rate can be up to 99.63%; from the two aspects of thermodynamics and kinetics, the adsorption of fly ash on acid fuchsin is fitted and the results show that the thermodynamic process of the adsorption conforms to model EXT1 and the dynamic process agrees with the pseudo first order adsorption kinetic equation.Key Wordsfly ashadsorptionacid fuchion

0引言

吸附法是处理印染废水中污染物的重要方法，目前工业生产主要应用活性炭作为吸附剂，但活性炭存在着生产成本高、再生困难等缺点[1]。现在常用的染料废水处理方法主要有生物降解[2-3]、氧化[4]、膜技术[5]和吸附[6]。如今我国煤化工项目的发展必定会产生大量的粉煤灰，如何将粉煤灰综合利用成为了国内外研究的热点。粉煤灰本身具有多孔的结构和较大的比表面积，具有很好的吸附效果。本试验采用粉煤灰对水中酸性品红进行吸附，研究了粉煤灰粒径、粉煤灰投加量、吸附温度、吸附时间、摇床转速、品红溶液浓度对去除率的影响，并从动力学和热力学角度研究了粉煤灰对酸性品红的吸附与吸附模型的拟合情况。……