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

Adsorption studies on the removal of malachite green by γ-Fe2O3/MWCNTs/Cellulose as an eco-friendly nanoadsorbent

AuthorsMohammad Hossein Sayadi,mansureh khalatbari,Mahmood Hajiani,Mohsen Nowrouzi
JournalBiomass Conversion and Biorefinery
Page number1-2
Paper TypeFull Paper
Published At2022
Journal TypeTypographic
Journal CountryGermany
Journal IndexISI،JCR،Scopus

Abstract

A highly efficient eco-friendly nanoadsorbent i.e. γ-Fe2O3/MWCNTs/Cellulose was derived from waste tires and natural cellulose for malachite green removal from aqueous solutions through a chemical vapor deposition technique. The properties of the synthesized nanoadsorbent were identified using XRD, FESEM, EDX, TEM, EDS, DLS, FTIR, VSM, BET, XPS, and TGA. According to the results, the highest malachite green adsorption capacity was obtained by γ-Fe2O3/MWCNTs/ cellulose 47.61 mg/g. In addition, the amount of dye adsorption increased with decreasing flow rate and enhancing column length from 9 to 3 mL/min and 2 to 10 min, respectively. The pseudo-second-order and the Langmuir model were the best kinetic and isothermal models to describe the malachite green adsorption process ( R2 > 99%). The thermodynamic results demonstrated that the adsorption process is exothermic and spontaneous. However, after 4 consecutive adsorption/desorption cycles, the removal efficiency was 87.35%. Therefore, γ-Fe2O3/MWCNTs/Cellulose can be considered as an outstanding adsorbent for malachite green removal.

Paper URL