Adsorption of Toxic Metal Ions from Aqueous Solutions by Modified Cellulosic Waste Material

被引：2
|
作者：
Dixit, Arvind [1 ]
Tiwari, Anuradha [1 ]
Yadav, Sunil Kumar [2 ]
Shukla, Bhakti Vijay [3 ]
机构：
[1] VSSD Coll, Dept Chem, Kanpur 208002, Uttar Pradesh, India
[2] Harcourt Butler Technol Inst, Dept Chem, Kanpur 208002, Uttar Pradesh, India
[3] Fragrance & Flavour Dev Ctr, Extens Unit, Kanpur 208012, Uttar Pradesh, India
来源：
ASIAN JOURNAL OF CHEMISTRY | 2013年 / 25卷 / 01期
关键词：
Adsorption; Toxic metal ions; Date stem; Batch studies; Kinetics isotherms; HEAVY-METALS; REMOVAL; CU2+; CD2+; LEAD;
D O I：
10.14233/ajchem.2013.13011
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The adsorption of Pb(II), Hg(II) and Ni(II) from aqueous solutions by cellulosic material was studied in a batch adsorption system. Factors influencing Pb(II), Hg(H) and Ni(II) adsorption such as metal ion concentration, pH, contact time and adsorbent dosage were investigated. The adsorption process was relatively fast and equilibrium was established with in 4 h. Maximum adsorption of metal ions and a comparison of the kinetic models on the overall adsorption rate showed that the adsorption system was best described by the pseudo second-order kinetics. The fast kinetics results and high adsorption capacity indicated that date pits fibre can be applied as the selective adsorbent for the treatment of heavy metal ions from aqueous solutions. The adsorption mechanism was suggested to be complexation.
引用
收藏
页码：309 / 312
页数：4
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