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Modelling adsorptive iron removal in filters
Iron in ground water is generally removed by the process of aeration and rapid sand filtration. Iron oxide coatings develop on the filter media of iron removal plants with time in use. Filters with such naturally iron oxide-coated sand are expected to perform better by switching the mode of operation from flocculative iron removal to adsorptive iron removal. Adsorptive iron removal in filters with coated sand under anoxic conditions was modelled using adsorption isotherm, mass balance and mass transfer equations to determine the breakthrough of the filters. Isotherm parameters obtained from batch experiments were used in model predictions, which were compared with the results of laboratory column experiments. The predicted breakthrough times for effluent concentration of 0.3 mg/l were 14-40% higher than the experimental results. Improvement of the model considering axial dispersion and pore diffusion is necessary for more accurate predictions.
Modelling adsorptive iron removal in filters
Iron in ground water is generally removed by the process of aeration and rapid sand filtration. Iron oxide coatings develop on the filter media of iron removal plants with time in use. Filters with such naturally iron oxide-coated sand are expected to perform better by switching the mode of operation from flocculative iron removal to adsorptive iron removal. Adsorptive iron removal in filters with coated sand under anoxic conditions was modelled using adsorption isotherm, mass balance and mass transfer equations to determine the breakthrough of the filters. Isotherm parameters obtained from batch experiments were used in model predictions, which were compared with the results of laboratory column experiments. The predicted breakthrough times for effluent concentration of 0.3 mg/l were 14-40% higher than the experimental results. Improvement of the model considering axial dispersion and pore diffusion is necessary for more accurate predictions.
Modelling adsorptive iron removal in filters
Sharma, S.K. (author) / Mendis, B.S. (author) / Greetham, M.R. (author) / Schippers, J.C. (author)
2000
5 Seiten, 14 Quellen
Conference paper
English
Modelling adsorptive iron removal in filters
| British Library Conference Proceedings | 2000
Effect of groundwater quality on adsorptive iron removal
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Effect of groundwater quality on adsorptive iron removal
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Prediction of iron(II) breakthrough in adsorptive filters under anoxic conditions
| British Library Online Contents | 2003