Browsing by Author "El-Shafie, Ahmed S."
Now showing items 1-15 of 15
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Adsorption characteristics of pristine and magnetic olive stones biochar with respect to clofazimine
El‐azazy, Marwa; Nabil, Iman; Hassan, Siham S.; El‐shafie, Ahmed S. ( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)Olive stone biochars (OSBC), both pristine and following magnetization (MAG–OSBC), were utilized as eco‐friendly and cost‐effective sorbents for the antituberculosis, clofazimine (CLOF). Morphologies, textures, surface ... -
Application of Pineapple Leaves as Adsorbents for Removal of Rose Bengal from Wastewater: Process Optimization Operating Face-Centered Central Composite Design (FCCCD)
Hassan, Siham S.; El-Shafie, Ahmed S.; Zaher, Nourhan; El-Azazy, Marwa ( Multidisciplinary Digital Publishing Institute (MDPI) , 2020 , Article)Adsorptive removal of rose bengal (RB) from contaminated water samples was approached using pineapple leaves (PAL). Three adsorbents were utilized for that purpose; raw pineapple leaves (RPAL) and the thermally activated ... -
Biochar of spent coffee grounds as per se and impregnated with tio2: Promising waste-derived adsorbents for balofloxacin
El-Azazy, Marwa; El-Shafie, Ahmed S.; Morsy, Hagar ( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)Biochars (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 ... -
A Comparison between Different Agro-wastes and Carbon Nanotubes for Removal of Sarafloxacin from Wastewater: Kinetics and Equilibrium Studies
El-Azazy, Marwa; El-Shafie, Ahmed S.; Elgendy, Ahmed; Issa, Ahmed A.; Al-Meer, Saeed; Al-Saad, Khalid A.... more authors ... less authors ( Multidisciplinary Digital Publishing Institute (MDPI) , 2020 , Article)In 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 ... -
Competitive adsorptive removal of promazine and promethazine from wastewater using olive tree pruning biochar: operational parameters, kinetics, and equilibrium investigations
El-Azazy, Marwa; El-Shafie, Ahmed S.; Fawzy, Samer; Rooney, David W.; Osman, Ahmed I. ( Springer Nature , 2023 , Article)This research aims to remove two phenothiazines, promazine (PRO) and promethazine (PMT), from their individual and binary mixtures using olive tree pruning biochar (BC-OTPR). The impact of individual and combinatory effects ... -
A Dual Approach to Detecting Iron Ions and Analyzing Water Quality
Paramparambath, Sreedevi; Oflaz, Kamil; Geetha, Mithra; El-Azazy, Marwa; El-Shafie, Ahmed S.; Sadasivuni, Kishor Kumar... more authors ... less authors ( Springer Nature , 2025 , Article)This research establishes the foundation for developing an IoT (internet of things)-enabled sensor developed for the rapid and precise detection of Fe ions (Fe+ 3 and Fe+ 2) in drinking water. The investigation incorporates ... -
Eco-structured adsorptive removal of tigecycline from wastewater: Date pits’ biochar versus the magnetic biochar
El-Azazy, Marwa; El-Shafie, Ahmed S.; Al-Meer, Saeed; Al-Saad, Khalid A. ( Multidisciplinary Digital Publishing Institute (MDPI) , 2020 , Article)Non-magnetic and magnetic low-cost biochar (BC) from date pits (DP) were applied to remove tigecycline (TIGC) from TIGC-artificially contaminated water samples. Pristine biochar from DP (BCDP) and magnetite-decorated biochar ... -
Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel
Marwa, El-Azazy; El-Shafie, Ahmed S.; Al-Mulla, Reem; Hassan, Siham S.; Nimir, Hassan I. ( Elsevier , 2023 , Article)Pharmaceutically active compounds (PhACs) represent an emerging class of contaminants. With a potential to negatively impact human health and the ecosystem, existence of pharmaceuticals in the aquatic systems is becoming ... -
Green tea waste as an efficient adsorbent for methylene blue: Structuring of a novel adsorbent using full factorial design
El-Azazy, Marwa; El-Shafie, Ahmed S.; Yousef, Bayan Al Shaikh ( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)Adsorptive removal of methylene blue (MB) from contaminated water samples was achieved using green tea waste (GTW). Adsorption of MB onto raw (RGTW) and thermally treated waste (TTGTW250–TTGTW500) was explored. The performance ... -
The interface of machine learning and carbon quantum dots: From coordinated innovative synthesis to practical application in water control and electrochemistry
Marwa, El-Azazy; Osman, Ahmed I.; Nasr, Mahmoud; Ibrahim, Yassmin; Al-Hashimi, Nessreen; Al-Saad, Khalid; Al-Ghouti, Mohammad A.; Shibl, Mohamed F.; Al-Muhtaseb, Ala’a H.; Rooney, David W.; El-Shafie, Ahmed S.... more authors ... less authors ( Elsevier , 2024 , Article Review)Not long ago, carbon quantum dots (CQDs) came into view as a revolutionary class of materials, propelling advancements in water remediation and electrochemical technology. This comprehensive review explores the cutting-edge ... -
Performance of Pristine versus Magnetized Orange Peels Biochar Adapted to Adsorptive Removal of Daunorubicin: Eco-Structuring, Kinetics and Equilibrium Studies
El-Shafie, Ahmed S.; Barah, Farahnaz G.; Abouseada, Maha; El-Azazy, Marwa ( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Drugs and pharmaceuticals are an emergent class of aquatic contaminants. The existence of these pollutants in aquatic bodies is currently raising escalating concerns because of their negative impact on the ecosystem. This ... -
Removal of antibiotics from aqueous solutions: insights of competitive adsorption onto Ni-impregnated biochar of spent coffee grounds
El-Shafie, Ahmed S.; Khaled, Rehab Khaled; Ahsan, Insharah; Hamdi, Helmi; Shibl, Mohamed F.; El-Azazy, Marwa... more authors ... less authors ( Springer Science and Business Media Deutschland GmbH , 2024 , Article)Antibiotics are among the most widely used pharmaceutically active compounds. Possessing the capability to adversely impact the ecological system, existence of antibiotics in the environment is an escalating concern. With ... -
TiO2-functionalized biochar from pistachio nutshells: adsorptive removal and photocatalytic decolorization of methyl orange
El-Shafie, Ahmed S.; Abouseada, Maha; El-Azazy, Marwa (2023 , Article)Pistachio nutshells-derived biochar (PNS-BC) was utilized as a cost-effective adsorbent for competently removing a model dye, methyl orange (MO) from wastewater. Three concentrations of TiO2; 1%, 2%, and 3% were used to ... -
Turning waste avocado stones and montmorillonite into magnetite-supported nanocomposites for the depollution of methylene blue: adsorbent reusability and performance optimization
El-Shafie, Ahmed S.; Karamshahi, Fatima; El-Azazy, Marwa ( Springer Nature , 2023 , Article)The existence of methylene blue (MB) in wastewater even as traces is raising environmental concerns. In this regard, the performances of four adsorbents, avocado stone biochar (AVS-BC), montmorillonite (MMT), and their ... -
Watermelon rinds as cost-efficient adsorbent for acridine orange: a response surface methodological approach
El-Shafie, Ahmed S.; Hassan, Siham S.; Akther, Nuri; El-Azazy, Marwa ( Springer Nature , 2023 , Article)In the current investigation, watermelon rinds (WMR) have been utilized as an eco-friendly and cost-efficient adsorbent for acridine orange (AO) from contaminated water samples. Adsorption of AO onto raw (RWM) and thermally ...















