Abstract
The advantage of using an available and abundant residual biomass, e.g., lignin, as a raw material for activated carbons provides an additional economical interest to the technical studies. A deeper understanding of adsorption behavior of Cr(VI) from aqueous systems onto H3PO4-acid activated lignin has been achieved via microcolumn mode studies under various conditions. The effects of the solution pH, initial metal ion concentration, flow rate, ionic strength, and adsorbent mass on hexavalent chromium adsorption were studied by assessing the breakthrough curve. The Thomas model range from 0.933 to 0.994 exhibited an excellent fitting for the experimental data. A considerable decrease in the adsorption capacity of the bed at various solution ionic strengths indicated that ion exchange may be the adsorption mechanism. The model constant could be used to scale and design o adsorption processes at the pilot plant scale level. This is an abstract of a paper presented at the CHISA 2012 - 20th International Congress of Chemical and Process Engineering and PRES 2012 - 15th Conference PRES (Prague, Czech Republic 8/25-29/2012).
| Original language | English |
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| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | 20th International Congress of Chemical and Process Engineering, CHISA 2012 and 15th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2012 - Prague, Czech Republic Duration: 25 Aug 2012 → 29 Aug 2012 |
Conference
| Conference | 20th International Congress of Chemical and Process Engineering, CHISA 2012 and 15th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2012 |
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| Country/Territory | Czech Republic |
| City | Prague |
| Period | 25/08/12 → 29/08/12 |