Highly effective removal of malachite green from aqueous solution by hydrochar derived from phycocyanin-extracted algal bloom residues through hydrothermal carbonization
| Autor: | Qing Huang, Hong Zhang, Fayu Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Langmuir
Aqueous solution Chromatography General Chemical Engineering Extraction (chemistry) 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Algal bloom chemistry.chemical_compound Hydrothermal carbonization Adsorption Chemical engineering chemistry Phycocyanin Malachite green 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | RSC Advances. 7:5790-5799 |
| ISSN: | 2046-2069 |
| Popis: | Huge volumes of harmful algal bloom residues (ABR) are collected during emergency treatment of cyanobacteria blooms, and phycocyanin-extracted algal bloom residues (PE-ABR) are produced after extraction of phycocyanin from ABR. To utilize them in a more efficient way, we propose a new approach to prepare hydrochars from PE-ABR through hydrothermal carbonization (HTC). The physical characters of as-prepared hydrochars were analyzed by SEM, FTIR and Raman spectroscopy. The PE-ABR hydrochar showed remarkable adsorption capability for removal malachite green (MG), with the maximum adsorption capacity of PE-ABR hydrochar for MG was 89.05 mg g−1. The adsorption equilibrium is consistent with Langmuir's model, and the adsorption kinetics follows the pseudo-second-order equation. Therefore, this work have demonstrated that harmful ABR can be utilized not only as a potential material for production of phycocyanin, but also an excellent source for hydrochar for removal dyes in contaminated wastewater with high adsorption efficiency. |
| Databáze: | OpenAIRE |
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