Bio-inspired Catechol-based Hypercrosslinked Polymer for Iron (Fe) Removal from Water
Autor: | Thanchanok Ratvijitvech |
---|---|
Rok vydání: | 2020 |
Předmět: |
Catechol
Environmental Engineering Materials science Polymers and Plastics Hydroquinone Cost effectiveness Langmuir adsorption model 02 engineering and technology 021001 nanoscience & nanotechnology Toluene chemistry.chemical_compound symbols.namesake Adsorption 020401 chemical engineering chemistry Materials Chemistry symbols Phenol 0204 chemical engineering 0210 nano-technology Nuclear chemistry BET theory |
Zdroj: | Journal of Polymers and the Environment. 28:2211-2218 |
ISSN: | 1572-8919 1566-2543 |
Popis: | Catechol, a structure widely found in nature with a strong interaction with iron (Fe) ions, was used as a monomer to prepare a hypercrosslinked polymer (HCP) as a solid adsorbent for Fe removal from water. The catechol-based HCP (Catechol-HCP) was synthesized via Friedel–Crafts alkylation and characterized by FT-IR spectroscopy, elemental analysis, and BET surface area analysis. The HCPs based on toluene, phenol, and hydroquinone monomers were also prepared to compare their Fe adsorption efficiency. Comparing to toluene-, phenol-, and hydroquinone-based HCPs, Catechol-HCP showed a significantly higher Fe adsorption indicating the important of the strong interaction of catechol unit to the Fe ion. Factors including adsorbent dose, contact time, initial solution concentration, and temperature were studied on their effects on the adsorption efficiency. The Catechol-HCP could remove Fe from water more than 40 mg g−1 or 94%. The adsorption isotherm was fitted to the Langmuir model with the RL value between 0 and 1 indicating the favorable adsorption. The kinetics study suggested the adsorption occurred as a pseudo-second-order mechanism. Moreover, the material showed a good reusability demonstrating the cost effectiveness of the material which would be beneficial for further practical utilizations. |
Databáze: | OpenAIRE |
Externí odkaz: |