Chitosan-bound pyridinedicarboxylate Ni(II) and Fe(III) complex biopolymer films as waste water decyanidation agents

被引：8

作者：

Adewuyi, Sheriff ^{[1
]}

Jacob, Julianah Modupe ^{[1
]}

Olaleye, Oluwatoyin Omolola ^{[1
]}

Abdulraheem, Taofiq Olanrewaju ^{[1
]}

Tayo, Jubril Ayopo ^{[1
]}

Oladoyinbo, Fatai Oladipupo ^{[1
,2
]}

机构：

[1] Univ Agr Abeokuta, Dept Chem, PMB 2240, Abeokuta 110001, Ogun State, Nigeria

[2] Univ Reading, Dept Chem, Reading RG6 UR6, Berks, England

来源：

CARBOHYDRATE POLYMERS | 2016年 / 151卷

关键词：

Chitosan; Pyridinecarboxylate; nickel(II); iron(III); Biopolymer film and decyanidation; CROSS-LINKED CHITOSAN; METAL-IONS; CYANIDE; ADSORPTION; OXIDATION; NANOCOMPOSITE; NANOPARTICLES; EQUILIBRIUM; DERIVATIVES; NICKEL(II);

D O I：

10.1016/j.carbpol.2016.06.070

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Chitosan is a biopolymer with immense structural advantage for chemical and mechanical modifications to generate novel properties, functions and applications. This work depicts new pyridinedicarboxylicacid (PDC) crosslinked chitosan-metal ion films as veritable material for cyanide ion removal from aqueous solution. The PDC-crosslinked chitosan-metal films (PDC-Chit-Ni(II) and PDC-Chit-Fe(III)) were formed by complexing PDC-crosslinked chitosan film with anhydrous nickel(II) and iron(III) chloride salts respectively. The PDC-Chit and its metal films were characterized employing various analytical and spectroscopic techniques. The FT-IR, UV-vis and the XRD results confirm the presence of the metal ions in the metal coordinated PDC-crosslinked chitosan film. The surface morphological difference of PDC-Chit-Ni(II) film before and after decyanidation was explored with scanning electron microscopy. Furthermore, the quantitative amount of nickel(II) and iron(III) present in the complex were determined using Atomic Absorption Spectrophotometer as 32.3 and 37.2 mu g/g respectively which portends the biopolymer film as a good complexing agent. Removal of cyanide from aqueous solution with PDC-Chit, PDC-Chit-Ni(II) and PDC-Chit-Fe(III) films was studied with batch equilibrium experiments. At equilibrium, decyanidation capacity (DC) followed the order PDC-Chit-Ni (II) PDC-Chit-Fe(III) > PDC-Chit. PDC-Chit-Ni(II) film gave 100% CN removal within 40 min decyanidation owing to favorable coordination geometry. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1235 / 1239

页数：5