CV


Mahmood Hajiani

Mahmood Hajiani

Associate Professor

Faculty: Engineering

Department: Civil Engineering

Degree: Doctoral

CV
Mahmood Hajiani

Associate Professor Mahmood Hajiani

Faculty: Engineering - Department: Civil Engineering Degree: Doctoral |

Mahmoud Hajiani is an Associate Professor in the Department of Civil Engineering at the University of Birjand. He holds an M.Sc. in Water Engineering from Iran University of Science and Technology and a Ph.D. in Water and Environmental Engineering from Australia. His research focuses on the removal of emerging contaminants through nanoparticle synthesis, advanced technologies such as photocatalysis, and nano-bio approaches for environmental pollution control. His expertise also includes investigating and removing microplastics from water resources using innovative methods, developing bio-electrochemical systems for wastewater treatment and hydrogen production, modeling the dispersion of emerging pollutants such as microplastics in aquatic environments, and applying remote sensing systems for water quality assessment. He has published numerous research articles in reputable international journals, including those indexed in the JCR database.

My affiliation

Department of Civil Engineering, Faculty of Engineering, University of Birjand

نمایش بیشتر

Green, Sustainable Synthesis of γ-Fe2O3/MWCNT/Ag Nano-Composites Using the Viscum album Leaf Extract and Waste Car Tire for Removal of Sulfamethazine

AuthorsMohammad Hossein Sayadi,mansooreh khalatbari,Mahmood Hajiani,Mohsen Nowrouzi
JournalNanomaterials
Page number2798-2798
Serial number12
Volume number16
Paper TypeFull Paper
Published At2022
Journal TypeElectronic
Journal CountryIran, Islamic Republic Of
Journal IndexJCR،Scopus

Abstract

Multi-walled carbon nanotubes (MWCNTs) decorated with Ag nanoparticles (NPs) are bifunctional adsorbent nanomaterials with antibacterial activity. They can be magnetically recovered from wastewater in case of coupling with γ-Fe2O3. In this study, for the first time, an environmentally friendly technique was applied to prepare a nanocomposite (NC) material composed of γ-Fe2O3/MWCNT/Ag by using Bridgestone disposable tires and Viscum album leaves extract. γ-Fe2O3/MWCNTs/Ag NC was employed for the removal of sulfamethazine (SMT) from aqueous solutions. Under the optimized conditions determined via the Taguchi method, the highest SMT adsorption capacity of the γ-Fe2O3/MWCNT/Ag NC was measured to be 47.6 mg/g. The experimental data fitted well with the pseudo-second-order kinetic model and the Langmuir isotherm. The thermodynamic parameters implied that the adsorption process was endothermic. In addition to adsorption of the drug pollutant, the NC demonstrated a superior antibacterial activity against Gram-positive bacteria. The reusability test also showed that over 79% SMT can be removed using γ-Fe2O3/MWCNTs/Ag NC even after four adsorption cycles. Taken together, γ-Fe2O3/MWCNTs/Ag NC was proven to be a promising antibacterial nano-adsorbent for wastewater treatment.

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