Preparation of Nano-Iron Loaded Cassava Fibre Composite Material for Hexavalent Chromium Removal
| Autor: | Haobin Shi, Wenbin Zhang, Feng Chen, Qingsheng Shi, Fei Chen, Li Fu, Shichao Zhao |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Sains Malaysiana. 50:3373-3382 |
| ISSN: | 2735-0118 0126-6039 |
| DOI: | 10.17576/jsm-2021-5011-21 |
| Popis: | Waste cassava fiber and tea polyphenols were used as carrier materials and reducing agents, respectively, to prepare nano-iron loaded cassava fiber composite (CF-FeNPs). This work investigated the factors affecting the removal of Cr(Ⅵ) by CF-FeNPs under different environmental conditions and the removal mechanism. The SEM characterization results show that as the initial Fe2+ concentration increases, the amount of nano-iron on the surface of the composite material increases. The results show that the increases of the initial Fe2+ content and dosage of CF-FeNPs can enhance the removal rate. Meanwhile, the decrease of the initial concentration of Cr(Ⅵ) solution and pH also beneficial for the removal performance. When pH=2.0 and the initial concentration of Cr(Ⅵ) is 10 mg/L, the removal rate of hexavalent chromium by CF-FeNPs can reach 81.4% within 2 h. The reaction conforms to the pseudo first-order kinetic model. The results of this study can provide technical reference for the remediation and treatment of Cr(VI)-containing wastewater. |
| Databáze: | OpenAIRE |
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