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المؤلفEl-Azazy, Marwa
المؤلفEl-Shafie, Ahmed S.
المؤلفMorsy, Hagar
تاريخ الإتاحة2024-03-06T09:01:49Z
تاريخ النشر2021-04-15
اسم المنشورMolecules
المعرّفhttp://dx.doi.org/10.3390/molecules26082295
الاقتباسEl-Azazy, M., El-Shafie, A. S., & Morsy, H. (2021). Biochar of spent coffee grounds as per se and impregnated with TiO2: promising waste-derived adsorbents for balofloxacin. Molecules, 26(8), 2295.
الرقم المعياري الدولي للكتاب1420-3049
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85105142532&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/52787
الملخصBiochars (BC) of spent coffee grounds, both pristine (SCBC) and impregnated with titanium oxide (TiO2 @SCBC) were exploited as environmentally friendly and economical sorbents for the fluroquinolone antibiotic balofloxacin (BALX). Surface morphology, functional moieties, and thermal stabilities of both adsorbents were scrutinized using SEM, EDS, TEM, BET, FTIR, Raman, and TG/dT analyses. BET analysis indicated that the impregnation with TiO2 has increased the surface area (50.54 m2 /g) and decreased the pore size and volume. Batch adsorption experiments were completed in lights of the experimental set-up of Plackett-Burman design (PBD). Two responses were maximized; the % removal (%R) and the adsorption capacity (qe, mg/g) as a function of four variables: pH, adsorbent dosage (AD), BALX concentration ([BALX]), and contact time (CT). %R of 68.34% and 91.78% were accomplished using the pristine and TiO2 @SCBC, respectively. Equilibrium isotherms indicated that Freundlich model was of a perfect fit for adsorption of BALX onto both adsorbents. Maximum adsorption capacity (qmax) of 142.55 mg/g for SCBC and 196.73 mg/g for the TiO2 @SCBC. Kinetics of the adsorption process were best demonstrated using the pseudo-second order (PSO) model. The adsorption-desorption studies showed that both adsorbents could be restored with the adsorption efficiency being conserved up to 66.32% after the fifth cycles.
راعي المشروعThis research was funded by Qatar University, Internal student grant number QUST-1-CAS-2021-4.
اللغةen
الناشرMultidisciplinary Digital Publishing Institute (MDPI)
الموضوعBalofloxacin
Green adsorbent
Plackett-Burman design
Spent coffee biochar
TiO -impregnated biochar 2
Wastewater
العنوانBiochar of spent coffee grounds as per se and impregnated with tio2: Promising waste-derived adsorbents for balofloxacin
النوعArticle
رقم العدد8
رقم المجلد26
dc.accessType Open Access


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