Abstract
In this paper the synthesis, characterization and testing of composite material based on multi-wall carbon nanotubes and silverdoped
natural zeolite (MWCNT-ZAg) has been investigated for humic acid (HA) adsorption. The surface characterization of the
composite material has been investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM/ EDX) analysis.
The Langmuir and Dubinin-Radushkevich (D-R) models fitted the best experimental data informing that adsorption process of
HA onto MWCNT-ZAg is heterogeneously and well described by the pseudo-second-order kinetics. The adsorption results
confirmed that MWCNT-ZAg composite can be used as a promising sorbent for the adsorptive HA removal in water treatment
process.