Assessment of fish scales waste as a low cost and eco-friendly adsorbent for removal of an azo dye: Equilibrium, kinetic and thermodynamic studies
| Autor: | Jecksin Ooi, Siew Shee Lim, Lai Yee Lee, Suchithra Thangalazhy-Gopakumar, Suyin Gan, Billie Yan Zhang Hiew |
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| Rok vydání: | 2017 |
| Předmět: |
Exothermic reaction
congenital hereditary and neonatal diseases and abnormalities Langmuir Environmental Engineering Animal Scales Enthalpy Kinetics Bioengineering 02 engineering and technology 010501 environmental sciences 01 natural sciences symbols.namesake chemistry.chemical_compound Adsorption Animals Organic chemistry Fourier transform infrared spectroscopy Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment Fishes Temperature General Medicine Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Phosphate Gibbs free energy chemistry Chemical engineering symbols Thermodynamics 0210 nano-technology Azo Compounds Water Pollutants Chemical |
| Zdroj: | Bioresource Technology. 245:656-664 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2017.08.153 |
| Popis: | In this study, AB113 dye was successfully sequestered using a novel adsorbent made of mixed fish scales (MFS). The influence of adsorbent dosage, initial pH, temperature, initial concentration and contact time on the adsorption performance was investigated. The surface chemistry and morphology of the adsorbent were examined by FTIR, TGA and SEM. Amides, phosphate and carbonate groups were evidently responsible for the high affinity of MFS towards the dye. The adsorption equilibrium and kinetic were well described by Langmuir and pseudo-second-order models, respectively. The maximum adsorption capacities of MFS were 145.3-157.3mg/g at 30-50°C. The adsorption of AB113 dye onto the adsorbent was exothermic and spontaneous as reflected by the negative enthalpy and Gibbs energy changes. The results support MFS asa potential adsorbent for AB113 dye removal. |
| Databáze: | OpenAIRE |
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