Removal of cephalexin from artificial wastewater by mesoporous silica materials using Box-Behnken response surface methodology

Mesoporous silica such as MCM-41 was used as an adsorbent for the removal of cephalexin antibiotic from synthetic wastewater. In this study, MCM-41 adsorbent was synthesised and was characterised by FE-SEM, XRD, FTIR and isotherms of adsorption/desorption of N2. The effects of initial pH, adsorbent...

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Bibliographic Details
Published in:Desalination and water treatment 2019-08, Vol.159, p.169-180
Main Authors: Panahi, Ayat Hossein, Ashrafi, Seyed Davoud, Kamani, Hossein, Khodadadi, Maryam, Lima, Eder Claudio, Mostafapour, Ferdos Kord, Mahvi, Amir Hossein
Format: Article
Language:English
Subjects:
Adsorption
Box-Behnken response surface methodology
Cephalexin
Mesoporous silica
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Summary:Mesoporous silica such as MCM-41 was used as an adsorbent for the removal of cephalexin antibiotic from synthetic wastewater. In this study, MCM-41 adsorbent was synthesised and was characterised by FE-SEM, XRD, FTIR and isotherms of adsorption/desorption of N2. The effects of initial pH, adsorbent dose, initial adsorbate concentration, contact time and temperature on process efficiency were evaluated using Box-Behnken statistical experiment design (RSM). FTIR analysis revealed the Si-OH, H-O-H and Si-O-Si bonds are formed. According to BET surface area, MCM-41 had pores with a diameter of more than 2.0 nm and surface area of 1,097 m2g–1 and also XRD spectra showed the mean crystallite size of MCM-41 was 75 nm. The statistical results show that pH, adsorbent dose, initial antibiotic concentration, temperature and quadratic pH were significant and presented with probability
ISSN:1944-3986
DOI:10.5004/dwt.2019.24109