Removal and characterisation of Pb(II) ions by xylenol orange-loaded chitosan: equilibrium studies

被引：8
作者：
Ali, Samah [1 ,2 ]
Sirry, Shadia M. [1 ,2 ]
Hassanin, Hanaa A. [3 ,4 ]
机构：
[1] Taibah Univ, Chem Dept, Coll Sci, Al Madinah Al Munawarah, Saudi Arabia
[2] Natl Org Drug Control & Res, Vitamin Sect, Giza, Egypt
[3] King Faisal Univ, Coll Sci, Dept Chem, Al Hasa, Saudi Arabia
[4] Ain Shams Univ, Dept Chem, Cairo, Egypt
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2022年 / 102卷 / 18期
关键词：
Chitosan; xylenol orange; lead; spectrophotometry; SOLID-PHASE EXTRACTION; ZERO CHARGE; THIOSEMICARBAZIDE CHITOSAN; AQUEOUS-SOLUTIONS; ACTIVATED CARBON; HEAVY-METALS; ADSORPTION; LEAD; COPPER; POINT;
D O I：
10.1080/03067319.2020.1807970
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this study chitosan (CS) was modified by coating with xylenol orange (XO). The batch adsorption of Pb(II) ions on modified chitosan (CS/XO) was investigated. The modification of chitosan was confirmed by FT-IR spectroscopy, scanning electron microscopy (SEM) and x-ray diffraction (XRD). The adsorption behaviour of the modified chitosan against Pb(II) ions were evaluated. Among these, pH effect, adsorbent dosage and initial concentration of Pb(II) ions. The results showed that the modified chitosan possesses good capacity for lead ions. The modified surface exhibited an affinity to chelating lead ions in solution, forming complex. The experimental results were examined by the Langmuir and Freundlich isotherm models. The maximum adsorption capacities of Pb(II) ions based on the Langmuir isotherm model were 0.457 mg/g.
引用
收藏
页码：6257 / 6269
页数：13
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