Chromium (VI) removal by methylated biomass of Spirulina platensis: The effect of methylation process

Description

In this work the adsorption experiments were carried out in the pH range 7–8, in order to focus exclusively the methylation influence on the biomass adsorption capacity in the absence of any hydrolysis reaction. In addition, since the final aim of this work will be the improvement of Cr(VI)-rich wastewater treatment, such conditions are needed to avoid an expensive preliminary step of neutralization before the activated sludge process. An adsorption isotherm study was also performed, and the adsorption data were processed by either the Langmuir or the Freundlich model.

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