Synthesis optimisation and characterisation of chitosan-calcite adsorbent from fishery-food waste for phosphorus removal
| Autor: | Snezana Maletic, Mark A. Taggart, Stuart W. Gibb, Sabolc Pap, Barbara Bremner, Maja Turk Sekulic, Caroline A. Kirk |
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| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
Circular economy Deacetylation Scanning electron microscope Health Toxicology and Mutagenesis Fisheries chemistry.chemical_element Wastewater treatment 02 engineering and technology 010501 environmental sciences 01 natural sciences Calcium Carbonate Chitosan chemistry.chemical_compound Adsorption Spectroscopy Fourier Transform Infrared Environmental Chemistry Thermal stability Fourier transform infrared spectroscopy Waste management 0105 earth and related environmental sciences Potassium hydroxide Chemistry Phosphorus General Medicine Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Pollution Refuse Disposal Kinetics Nutrient recovery Food 0210 nano-technology Water Pollutants Chemical Research Article Nuclear chemistry |
| Zdroj: | Environmental Science and Pollution Research International |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-019-07570-0 |
| Popis: | Here, Box-Behnken design (BBD) approaches were utilised to optimise synthesis methodology for the chitosan-calcite rich adsorbent (CCM) made from fishery-food waste material (crab carapace), using low-temperature activation and potassium hydroxide (KOH). The effect of activation temperature, activation time and impregnation ratio was studied. The final adsorbent material was evaluated for its phosphorus (P) removal efficiency from liquid phase. Results showed that impregnation ratio was the most significant individual factor as this acted to increase surface deacetylation of the chitin (to chitosan) and increased the number of amine groups (–NH2) in the chitosan chain. P removal efficiency approached 75.89% (at initial P concentration of 20 mg/L) under optimised experimental conditions, i.e. where the impregnation ratio for KOH:carapace (g/g) was 1:1, the activation temperature was 105 °C and the activation time was 150 min. Predicted responses were in good agreement with the experimental data. Additionally, the pristine and CCM material were further analysed using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX), Brunauer-Emmett-Teller technique (BET), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermal gravimetric analysis (TGA). Characterisation showed enhancements in surface chemistry (introducing positively charged amine groups), textural properties and thermal stability of the CCM. Electronic supplementary material The online version of this article (10.1007/s11356-019-07570-0) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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