Chemical Engineering Research and Design, ( ISI ), Volume (129), No (8), Year (2018-2) , Pages (217-230)

Title : ( Adsorption and visible-light photocatalytic degradation of tetracycline hydrochloride from aqueous solutions using 3D hierarchical mesoporous BiOI: Synthesis and characterization, process optimization, adsorption and degradation modeling )

Authors: َAliakbar Dehghan , M. H. Dehghani , R. Nabizadeh , Navid Ramezanian , M. Alimohammadi , A A Najafpoorer ,

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Abstract

Presence of antibiotics in aquatic environment has raised public concerns due to potential adverse effects. In this study, we synthesized two different bismuth oxyiodide (BiOI) by hydrolysis (BiOI-H) and solvothermal (BiOI-ST) methods and characterized using FTIR, XRD, FESEM, N2 adsorption–desorption isotherm, DRS and PLS. The results of characterization tests showed that the BiOI-ST sample is a better adsorbent and may be more active in photocatalytic reactions as the result of more surface area, higher light absorption ability lower band-gap energy and PL intensity, than BiOI-H. Tetracycline hydrochloride (TCH) antibiotic was selected to evaluate adsorption and photocatalytic efficiency of BiOI-ST using Response Surface Methodology. The optimum conditions of contact time, TCH initial concentration, BiOI dosage and pH for adsorption and photocatalytic processes were obtained 37.5 min, 2.1 mg/L, 1.5 g/L, 8.5 and 101.5 min, 2 mg/L, 0.68 g/L, respectively. Based on kinetic and isotherm studies, experimental data fitted to pseudo-second order kinetics model and followed the Freundlich and D–R isotherm models. The apparent pseudo-first order rate constant of BiOI-ST was higher than that of BiOI-H. Therefore, BiOI-ST can be used as a promising option to treat low level concentration of TCH in hospital wastewaters.

Keywords

, Adsorption Kinetic and isotherm Visible, light photocatalytic 3D hierarchical mesoporous BiOI
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@article{paperid:1066708,
author = {علی اکبر دهقان and محمد هادی دهقانی and رامین نبی زاده and Ramezanian, Navid and محمد علی محمدی and علی اصغر نجف پور},
title = {Adsorption and visible-light photocatalytic degradation of tetracycline hydrochloride from aqueous solutions using 3D hierarchical mesoporous BiOI: Synthesis and characterization, process optimization, adsorption and degradation modeling},
journal = {Chemical Engineering Research and Design},
year = {2018},
volume = {129},
number = {8},
month = {February},
issn = {0263-8762},
pages = {217--230},
numpages = {13},
keywords = {Adsorption Kinetic and isotherm Visible-light photocatalytic 3D hierarchical mesoporous BiOI},
}

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%0 Journal Article
%T Adsorption and visible-light photocatalytic degradation of tetracycline hydrochloride from aqueous solutions using 3D hierarchical mesoporous BiOI: Synthesis and characterization, process optimization, adsorption and degradation modeling
%A علی اکبر دهقان
%A محمد هادی دهقانی
%A رامین نبی زاده
%A Ramezanian, Navid
%A محمد علی محمدی
%A علی اصغر نجف پور
%J Chemical Engineering Research and Design
%@ 0263-8762
%D 2018

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