Development of a nitrogen-functionalized carbon adsorbent derived from biomass waste by diammonium hydrogen phosphate activation for Cr(VI) removal

This work presents a one-step method for preparing a nitrogen-functionalized carbon adsorbent derived from biomass by diammonium hydrogen phosphate (DAP) activation for Cr(VI) removal. The activation mechanisms and nitrogen functionality were measured by thermogravimetric analysis. The effects of the preparation parameters on the properties of the final carbon adsorbent were examined by N2 adsorption/desorption and Boehm's titration. The optimum...