Abstract
In this study, the removal of arsenate from water using a nanochitosan adsorbent is investigated, and an optimised two-stage batch adsorber system is designed. Nanochitosan is a widely researched biosorbent that is derived from seafood shell waste. An equilibrium study was first conducted with a contact time to reach equilibrium of 3 d. These results were used to minimise the mass of chitosan required in a two-stage batch adsorption process using an optimised design procedure. Subsequently, the adsorption kinetics were modelled, and a contact time study was conducted to acquire the time required using a pseudo-second-order model. The mass and contact time required in an optimised batch absorber system was found to be around 1–3 kg, depending on initial arsenate concentration, and close to 100 min, respectively.
Original language | English |
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Pages (from-to) | 235-243 |
Number of pages | 9 |
Journal | Desalination and Water Treatment |
Volume | 70 |
DOIs | |
Publication status | Published - Apr 2017 |
Keywords
- Arsenate removal
- Batch adsorption optimisation
- Nanochitosan