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改性牛粪-树脂颗粒对水溶液中孔雀绿的吸附动力学研究

Keywords: 改性牛粪-树脂颗粒,孔雀绿,吸附等温,吸附动力学

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Abstract:

通过化学方法改性牛粪,并与树脂结合制得一种新型的吸附材料———改性牛粪-树脂颗粒。本研究通过静态实验方法检验所制备颗粒对水溶液中孔雀绿的吸附等温和吸附动力学过程,并利用Langmuir和Freundlich吸附等温方程以及准二级动力学方程和颗粒扩散模型对实验数据进行拟合。吸附等温实验结果表明,改性牛粪-树脂颗粒对水溶液中孔雀绿的吸附等温过程符合Langmuir方程,颗粒直径对最大吸附量产生一定影响,颗粒直径大于2mm、1~2mm和小于1mm时的最大吸附量分别为158.73、185.19和128.21mg·g-1。吸附动力学实验结果表明,颗粒扩散模型能够更好地描述改性牛粪-树脂颗粒对水溶液中孔雀绿的吸附过程(r2>0.98)。在吸附动力学实验中,随着染料的初始浓度由40mg·L-1增加到150mg·L-1,扩散速率参数Ki从0.6753mg·g-1·min-1增加到1.6440mg·g-1·min-1;当牛粪-树脂颗粒的量从2.0000g增加到10.0000g时,扩散速率从1.6033mg·g-1·min-1下降到0.8937mg·g-1·min-1;当搅拌速度从100r·min-1增加到300r·min-1时,扩散速率从1.1768mg·g-1·min-1

References

[1]  樊毓新,周增炎.染料废水的处理方法现状与发展前景[J].环境保护,2002,9:22-24.FAN Y X,ZHOU Z Y.Current situation and development prospect of textile dye wastewater treatment Methods[J].Environmental Protec-tion,2002,9:22-24.
[2]  刘梅红.印染废水处理技术研究进展[J].纺织学报,2007,28(1):116-119.LIU M H.Advances in dyeing and printing wastewater treatment technolo-gies[J].Journal of Textile Research,2007,28(1):116-119.
[3]  贾金平,申哲民,王文华.含染料废水处理方法的现状与进展[J].上海环境科学,2000,19(1):26-29.JIA J P,SHEN Z M,WANG W H.The status and progress on treating methods of wastewater containing dyestaff[J].Shanghai Environmental Sciences,2000,19(1):26-29.
[4]  Rahman I A,Saad B,Shaidan S,et al.Adsorption characteristics of malachite green on activated carbon derived from rice husks produced by chemical-thermal process[J].Bioresource Technology,2005,96:1578-1583.
[5]  Robinson T,Chandran B,Nigam P.Removal of dyes from a synthetic textile dye effluent by biosorption on apple pomace and wheat straw[J].Water Research,2002,36:2824-2830.
[6]  Arami M,Lirnaee N Y,Mahmoodi N M,et al.Removal of dyes from col-ored textile wastewater by orange peel adsorbent[J].Journal of Colloid and Interface Science,2005,288:371-376.
[7]  Robinson T,Chandran B,Nigam P.Removal of dyes from an artificial textile dye effluent by two agricultural waste residues[J].Environment International,2002,28:29-33.
[8]  Batzius F A,Sidiras D K.Simulation of dye adsorption by beech sawdust as affected by pH[J].Journal of Hazardous Materials,2007,141:668-679.
[9]  Annadurai G,Juang R S,Lee D J.Use of cellulose-based wastes for ad-sorption of dyes from aqueous solutions[J].Journal of Hazardous Mate-rials,2002,92:263-274.
[10]  Osma J F,Saravia V,José L,et al.Sunflower seed shells:A novel and effective low-cost adsorbent for the removal of the diazo dye Reactive Black 5 from aqueous solutions[J].Journal of Hazardous Materials,2007,147:900-905.
[11]  Sun Q,Yang L.The adsorption of basic dyes from aqueous solution on modified peat-resin particle[J].Water Research,2003,37:1535-1544.
[12]  Allen S J,McKay G,Khader K Y H.Intraparticle diffusion of a basic dye during adsorption onto sphagnum peat[J].Environmental Pol-lution,1989,56 (1):39-51.

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