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AuthorEl-Azazy, Marwa
AuthorEl-Shafie, Ahmed S.
AuthorElgendy, Ahmed
AuthorIssa, Ahmed A.
AuthorAl-Meer, Saeed
AuthorAl-Saad, Khalid A.
Available date2024-02-08T10:49:45Z
Publication Date2020-11
Publication NameMolecules
Identifierhttp://dx.doi.org/10.3390/MOLECULES25225429
CitationEl-Azazy, M., El-Shafie, A. S., Elgendy, A., Issa, A. A., Al-Meer, S., & Al-Saad, K. A. (2020). A comparison between different agro-wastes and carbon nanotubes for removal of sarafloxacin from wastewater: kinetics and equilibrium studies. Molecules, 25(22), 5429.
ISSN1420-3049
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85096740039&origin=inward
URIhttp://hdl.handle.net/10576/51676
AbstractIn the current study, eco-structured and efficient removal of the veterinary fluoroquinolone antibiotic sarafloxacin (SARA) from wastewater has been explored. The adsorptive power of four agro-wastes (AWs) derived from pistachio nutshells (PNS) and Aloe vera leaves (AV) as well as the multi-walled carbon nanotubes (MWCNTs) has been assessed. Adsorbent derived from raw pistachio nutshells (RPNS) was the most efficient among the four tested AWs (%removal ‘%R’ = 82.39%), while MWCNTs showed the best adsorptive power amongst the five adsorbents (%R = 96.20%). Plackett-Burman design (PBD) was used to optimize the adsorption process. Two responses (‘%R’ and adsorption capacity ‘qe ’) were optimized as a function of four variables (pH, adsorbent dose ‘AD’ (dose of RPNS and MWCNTs), adsorbate concentration [SARA] and contact time ‘CT’). The effect of pH was similar for both RPNS and MWCNTs. Morphological and textural characterization of the tested adsorbents was carried out using FT-IR spectroscopy, SEM and BET analyses. Conversion of waste-derived materials into carbonaceous material was investigated by Raman spectroscopy. Equilibrium studies showed that Freundlich isotherm is the most suitable isotherm to describe the adsorption of SARA onto RPNS. Kinetics’ investigation shows that the adsorption of SARA onto RPNS follows a pseudo-second order (PSO) model.
SponsorThis research was funded by Qatar University, Collaborative grant number QUCG-CAS-19/20-3.
Languageen
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
SubjectAloe vera leaves
multi-walled carbon nanotubes (MWCNTs)
pistachio nutshells
sarafloxacin
waste-derived materials
TitleA Comparison between Different Agro-wastes and Carbon Nanotubes for Removal of Sarafloxacin from Wastewater: Kinetics and Equilibrium Studies
TypeArticle
Issue Number22
Volume Number25
dc.accessType Open Access


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