Comparative efficiency of algal biofilters in the removal of chromium and copper from wastewater |
| |
| Authors: | Maria Lourdes J.A.J. Jacinto Carlos Primo C. David Teresita R. Perez Benjamin R. De Jesus |
| |
| Affiliation: | 1. Institute of Environmental Science and Meteorology, University of the Philippines, Diliman, Quezon City, Philippines;2. National Institute of Geological Sciences, University of the Philippines, Diliman, Quezon City, Philippines;3. Department of Environmental Science, Ateneo de Manila University, Loyola Heights, Quezon City, Philippines;1. Department of Otolaryngology–Head and Neck Surgery, Drexel University, College of Medicine, Philadelphia, Pennsylvania;2. Drexel University, College of Medicine, Philadelphia, Pennsylvania;3. Department of Otolaryngology–Head and Neck Surgery, Boston Medical Center, Boston, Massachusetts;4. Voice and Swallowing Center, ENT and Allergy Associates, Lake Success, New York;1. Dpto. de Química Inorgánica e Ingeniería Química, Instituto Universitario de Química Fina y Nanoquímica (IUQFN), Campus de Excelencia Internacional Agroalimentaio (CeiA3), Universidad de Córdoba, Córdoba, Spain;2. INFIQC-CONICET, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina;1. Mechanical Engineering Department, De La Salle University, 2401 Taft Avenue, 0922, Manila, Philippines;2. Center for Engineering and Sustainable Development Research, De La Salle University, 2401 Taft Avenue, 0922, Manila, Philippines;3. Electronics and Communication Engineering Department, De La Salle University, 2401 Taft Avenue, 0922, Manila, Philippines;4. Civil Engineering Department, De La Salle University, 2401 Taft Avenue, 0922, Manila, Philippines;5. Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan;6. Department of Chemical and Materials Engineering, College of Engineering, Tunghai University, Taichung 407, Taiwan;7. Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan;8. Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan;1. Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;2. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;3. School of Sciences, Wuhan University of Technology, Wuhan 430070, China;1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China;2. Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan;3. Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan;4. Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan |
| |
| Abstract: | The performance of a macroalgae (Sargassum sp.), a laboratory-cultivated microalgae (Chlorococcum sp.) and a commercially available granulated activated carbon (GAC) for the removal of copper (Cu) and chromium (Cr) from aqueous solutions was evaluated using batch experiments. Kinetic and isotherm experiments were done at the optimal pH of 4.5 ± 0.1 for Cu (II) and 2.0 ± 0.1 for Cr (total). The equilibrium isotherms were determined and the results were analyzed using the Langmuir and Freundlich models. The best Cu removal performance was observed on Sargassum at a maximum removal of 87.3% obtained for an initial concentration of 20 mg L?1 Cu. The maximum uptake capacities for Cu (II) were 71.4, 19.3 and 11.4 mg g?1 of Sargassum, Chlorococcum and GAC, respectively. The biosorbents were also able to remove appreciable amounts of Cr, again with Sargassum showing maximum uptake capacity over the other materials. Kinetic studies also reveal that the removal rate is faster for both metals in Sargassum. Tests with an actual wastewater confirm the maximum uptake capacity of Cu by Sargassum. In all experiments the Sargassum biofilter outperformed GAC, which makes it a promising low-cost alternative to conventional filtration materials for wastewater treatment. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
