Effect of volumetric flow rate on the breakthrough curves for the biosorption of Cr (III) and Ni (II)
DOI:
https://doi.org/10.4013/4974Abstract
In a fixed bed, sorption behavior is based on the mass transfer zones (MTZ). For a given operational flow rate, in which the column yields breakthrough curves close to ideality, the MTZ is smaller and the diffusional resistances are minimal. Thus, the objective of this work was to investigate the effect of the flow rate on the breakthrough curves for the process of monocomponent biosorption of chromium and nickel ions by Sargassum filipendula pre-treated biomass. The concentration of ions in the feed was kept constant around 2 meq/L, while the flow rate was varied: 2, 4, 6, and 8 mL/min. The obtained results pointed out to the volumetric flow rate of 2 mL/min as the best operational condition for both systems, presenting the largest capacity of the packed bed (tu/tt) and the highest retention of metallic ions (Qtu).
Key words: fixed bed, biosorption, volumetric flow rate.Downloads
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