Removal of microcystin-LR from drinking water using a bamboo-based charcoal adsorbent modified with chitosan
| Autor: | Xiuying Jia, Hangjun Zhang, Qing Gao, Ciming Hu, Ying Ding, Shuying Xu, Guoying Zhu, Mi Zhang |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Bamboo
Environmental Engineering Microcystins Bambusa Microcystin-LR Water Purification Chitosan chemistry.chemical_compound Adsorption Environmental Chemistry Charcoal General Environmental Science Chromatography Drinking Water Bamboo charcoal General Medicine chemistry Freundlich model visual_art Microscopy Electron Scanning visual_art.visual_art_medium Marine Toxins Marine toxin Water Pollutants Chemical Nuclear chemistry |
| Zdroj: | Journal of Environmental Sciences. 23:1983-1988 |
| ISSN: | 1001-0742 |
| DOI: | 10.1016/s1001-0742(10)60676-6 |
| Popis: | A new kind of low-cost syntactic adsorbent from bamboo charcoal and chitosan was developed for the removal of microcystin-LR from drinking water. Removal efficiency was higher for the syntactic adsorbent when the amount of bamboo charcoal was increased. The optimum dose ratio of bamboo charcoal to chitosan was 6:4, and the optimum amount was 15 mg/L; equilibrium time was 6 hr. The adsorption isotherm was non-linear and could be simulated by the Freundlich model (R2 = 0.9337). Adsorption efficiency was strongly affected by pH and natural organic matter (NOM). Removal efficiency was 16% higher at pH 3 than at pH 9. Efficiency rate was reduced by 15% with 25 mg/L NOM (UV254 = 0.089 cm(-1)) in drinking water. This study demonstrated that the bamboo charcoal modified with chitosan can effectively remove microcystin-LR from drinking water. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect