Rapid and effective preparation of a HPEI modified biosorbent based on cellulose fiber with a microwave irradiation method for enhanced arsenic removal in water
| Autor: | Guangshan Zhang, Yanei Xue, Peng Wang, Sheng Deng, Du Zhaolin, Chen Shuwei |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Langmuir
Polyethylenimine Materials science Renewable Energy Sustainability and the Environment Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology Grafting 01 natural sciences chemistry.chemical_compound Cellulose fiber Adsorption chemistry Chemical engineering General Materials Science Fiber Fourier transform infrared spectroscopy 0210 nano-technology Arsenic 0105 earth and related environmental sciences |
| Zdroj: | Journal of Materials Chemistry A. 4:15851-15860 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c6ta06051j |
| Popis: | Herein, we report a facile and rapid route for the preparation of hyperbranched polyethylenimine (HPEI) modified cellulose fiber (CellMW-HPEI) as an effective biosorbent for the removal of inorganic arsenic. Benefiting from microwave irradiation (MW), the grafting of this coating agent with a large molecular size was achieved efficiently according to FTIR, SEM and elemental analysis. The adsorption properties of the modified biosorbent including equilibrium isotherms, kinetics and the effects of pH and temperature were explored. The results revealed that the experimental data well fitted Langmuir and pseudo-second-order models. The high density of amine groups on the modified fiber surface is believed to enhance the adsorption of arsenic ions due to electrostatic attraction and surface complexation in the binding process. Compared with other biosorbents reported previously, CellMW-HPEI fibers could be promptly prepared and the uptake amounts for arsenic ions were enhanced, simultaneously. Thus, this work will help facilitate the research on novel biosorbents for the removal of arsenic from water. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|