TY - JOUR
T1 - Ammonia removal from industrial effluent using zirconium oxide and graphene-oxide nanocomposites
AU - Mousavi, Seyed Vahid
AU - Joolaei Ahranjani, Parham
AU - Farshineh Saei, Sara
AU - Mehrdadi, Naser
AU - Nabi Bidhendi, Gholamreza
AU - Jume, Binta Hadi
AU - Rezania, Shahabaldin
AU - Mojiri, Amin
N1 - Funding Information:
All authors would like to thank their universities and institutes for financial support and facilitation.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/6
Y1 - 2022/6
N2 - The present study developed and evaluated nano-adsorbents based on zirconium oxide and graphene oxide (ZrO2/GO) as a novel adsorbent for the efficient removal of ammonia from industrial effluents. Fourier transform infrared (FTIR) spectroscopy, Field Emission Scanning Electron Microscope, Energy-dispersive X-ray Spectroscopy, and X-ray diffraction were used to evaluate and identify the novel adsorbent in terms of morphology, crystallography, and chemical composition. The pH (7), adsorbent quantities (20 mg), adsorbent contact time (30 min) with the sample, and initial ammonia concentration were all tuned for ammonia uptake. To validate ammonia adsorption on the ZrO2/GO adsorbent, several kinetic models and adsorption isotherms were also utilized. The results showed that the kinetics of ammonia adsorption are of the pseudo-second order due to high R2 (>0.99) value as compared first-order (R2 = 0.52). The chemical behavior and equilibrium isotherm were analyzed using the isotherm models and Langmuir model provided high R2 (>0.98) as compared Freundlich (>0.96). Hence, yielding a maximum uniform equilibrium adsorption capacity of 84.47 mg g−1. The presence of functional groups on the surface of graphene oxide and ZrO2 nanoparticles, which interact efficiently with ammonia species and provide an efficient surface for good ammonia removal, is most likely to be responsible.
AB - The present study developed and evaluated nano-adsorbents based on zirconium oxide and graphene oxide (ZrO2/GO) as a novel adsorbent for the efficient removal of ammonia from industrial effluents. Fourier transform infrared (FTIR) spectroscopy, Field Emission Scanning Electron Microscope, Energy-dispersive X-ray Spectroscopy, and X-ray diffraction were used to evaluate and identify the novel adsorbent in terms of morphology, crystallography, and chemical composition. The pH (7), adsorbent quantities (20 mg), adsorbent contact time (30 min) with the sample, and initial ammonia concentration were all tuned for ammonia uptake. To validate ammonia adsorption on the ZrO2/GO adsorbent, several kinetic models and adsorption isotherms were also utilized. The results showed that the kinetics of ammonia adsorption are of the pseudo-second order due to high R2 (>0.99) value as compared first-order (R2 = 0.52). The chemical behavior and equilibrium isotherm were analyzed using the isotherm models and Langmuir model provided high R2 (>0.98) as compared Freundlich (>0.96). Hence, yielding a maximum uniform equilibrium adsorption capacity of 84.47 mg g−1. The presence of functional groups on the surface of graphene oxide and ZrO2 nanoparticles, which interact efficiently with ammonia species and provide an efficient surface for good ammonia removal, is most likely to be responsible.
KW - Ammonia removal
KW - Graphene oxide
KW - Kinetics and adsorption isotherm
KW - Zirconium oxide nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=85125480421&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2022.134008
DO - 10.1016/j.chemosphere.2022.134008
M3 - Article
C2 - 35219713
AN - SCOPUS:85125480421
SN - 0045-6535
VL - 297
JO - Chemosphere
JF - Chemosphere
M1 - 134008
ER -