1 research outputs found
Versatile Cellulose-Based Carbon Aerogel for the Removal of Both Cationic and Anionic Metal Contaminants from Water
Hydrothermal carbonization of cellulose
in the presence of the globular protein ovalbumin leads to the formation
of nitrogen-doped carbon aerogel with a fibrillar continuous carbon
network. The protein plays here a double role: (i) a natural source
of nitrogen functionalities (2.1 wt %) and (ii) structural directing
agent (<i>S</i><sub>BET</sub> = 38 m<sup>2</sup>/g). The
applicability in wastewater treatment, namely, for heavy metal removal,
was examined through adsorption of CrÂ(VI) and PbÂ(II) ion solely and
in a mixed bicomponent aqueous solutions. This cellulose-based carbogel
shows an enhanced ability to remove both CrÂ(VI) (∼68 mg/g)
and PbÂ(II) (∼240 mg/g) from the targeted solutions in comparison
to other carbon materials reported in the literature. The presence
of competing ions showed little effect on the adsorption efficiency
toward CrÂ(VI) and PbÂ(II)