Performance of packed bed column usingChara aculeolatabiomass for removal of Pb and Cd ions from wastewater
| Autor: | Metha Meetam, Duangrat Inthorn, Najjapak Sooksawat, Maleeya Kruatrachue, Prayad Pokethitiyook |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
chemistry.chemical_element 02 engineering and technology Wastewater 010501 environmental sciences Chara 01 natural sciences Metal Biomass 0105 earth and related environmental sciences Ions Detection limit Packed bed Cadmium Aqueous solution Chromatography Biosorption General Medicine Models Theoretical 021001 nanoscience & nanotechnology Volumetric flow rate Lead chemistry visual_art visual_art.visual_art_medium Adsorption 0210 nano-technology Water Pollutants Chemical Nuclear chemistry |
| Zdroj: | Journal of Environmental Science and Health, Part A. 52:539-546 |
| ISSN: | 1532-4117 1093-4529 |
| Popis: | Biosorption of Pb and Cd from aqueous solution by biomass of Chara aculeolata was studied in a continuous packed bed column. C. aculeolata in the fixed bed column is capable of decreasing Pb and Cd concentrations from 10 mg/L to a value below the detection limit of 0.02 mg/L. Selective uptake of Pb and Cd in a binary solution resulted in Pb having much higher relative affinity than Cd. The experiments were conducted to study the effects of column design parameters, bed depth, and flow rate on the metal biosorption. Pb uptake capacity of C. aculeolata increased with increased bed depth and decreased flow rate, while Cd uptake capacity increased with increased bed depth but remained constant at any flow rate. The Thomas model was found in a suitable fitness with the experiment data for Pb and Cd (R2 > 0.90). The efficiency of biosorbent regeneration achieved by 0.1 M HCl was very high, that was, 98% for Pb and 100% for Cd in the third reused cycle. It can be concluded that C. aculeolata is a good bi... |
| Databáze: | OpenAIRE |
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