Removal of Chromium (VI) from Water onto Activated Carbon by Adsorption in Dynamic Mode
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Date
2020
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Abstract
Abstract Hexavalent chromium pollution from industrial waste water is a serious
problem as it can cause adverse effects on the environment. Several methods are used
to reduce the harmful effects of this pollutant, especially physico-chemical methods,
such as adsorption technology. The present study aims to remove Cr (VI) from
industrial sources in a fixed-bed column of activated carbon. The experiments were
carried out at natural pH and temperature with a flow rate (5, 10, and 20 mL/min) and
bed height (3.5 cm). Breakthrough curves for feed concentrations (0.01, 0.03, and
0.05 mol/L) were investigated. The results indicated a marked decrease up to 99%.
The value of the flow constant for the Thomas model decreased with the increase in
the concentration of the incoming substance, but increased with the increase in the
flow rate.