TY - JOUR
T1 - Synthetic coal fly ash-derived zeolites doped with silver nanoparticles for mercury (II) removal from water
AU - Tauanov, Z.
AU - Tsakiridis, P. E.
AU - Mikhalovsky, S. V.
AU - Inglezakis, V. J.
PY - 2018/10/15
Y1 - 2018/10/15
N2 - Coal fly ash-derived zeolites have attracted considerable interest in the last decade due to their use in several environmental applications such as the removal of dyes and heavy metals from aqueous solutions. In this work, coal fly ash-derived zeolites and silver nanoparticles-impregnated zeolites (nanocomposites) were synthesized and characterized by TEM/EDX, SEM/EDX, XRD, XRF, porosimetry (BET), particle size analysis (PSA) and zeta potential measurements. The synthesized materials were used for the removal of Hg2+ from aqueous solutions. The results demonstrated that nanocomposites can remove 99% of Hg2+, up to 10% and 90% higher than the removal achieved by the zeolite and the parent fly ash, respectively. Leaching studies further demonstrated the superiority of the nanocomposite over the parent materials. The Hg2+ removal mechanism is complex, involving adsorption, surface precipitation and amalgamation.
AB - Coal fly ash-derived zeolites have attracted considerable interest in the last decade due to their use in several environmental applications such as the removal of dyes and heavy metals from aqueous solutions. In this work, coal fly ash-derived zeolites and silver nanoparticles-impregnated zeolites (nanocomposites) were synthesized and characterized by TEM/EDX, SEM/EDX, XRD, XRF, porosimetry (BET), particle size analysis (PSA) and zeta potential measurements. The synthesized materials were used for the removal of Hg2+ from aqueous solutions. The results demonstrated that nanocomposites can remove 99% of Hg2+, up to 10% and 90% higher than the removal achieved by the zeolite and the parent fly ash, respectively. Leaching studies further demonstrated the superiority of the nanocomposite over the parent materials. The Hg2+ removal mechanism is complex, involving adsorption, surface precipitation and amalgamation.
KW - coal fly ash
KW - mercury removal
KW - nanocomposites
KW - silver nanoparticles
KW - synthetic zeolite
KW - water treatment
UR - http://www.scopus.com/inward/record.url?scp=85053028606&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2018.07.049
DO - 10.1016/j.jenvman.2018.07.049
M3 - Article
C2 - 30041095
AN - SCOPUS:85053028606
VL - 224
SP - 164
EP - 171
JO - Journal of Environmental Management
JF - Journal of Environmental Management
SN - 0301-4797
ER -