Development and characterization of MWCNTs from activated carbon as adsorbent for metronidazole and levofloxacin sorption from pharmaceutical wastewater: Kinetics, isotherms and thermodynamic studies

Kariim, I.; Abdulkareem, A. S.; Abubakre, O. K.

doi:10.1016/j.sciaf.2019.e00242

Cited by 29 publications

(11 citation statements)

References 12 publications

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“…The surface morphological analysis revealed the surface area of pure activated carbon and Ni-Fe supported activated carbon CNTs, which was 840.38 and 650.45 m 2 /g, respectively. Results from the adsorption process demonstrated a high adsorption capacity of developed MWCNTs for metronidazole and levofloxacin [ 52 ]. Zhao and coworkers prepared magnetic MWCNTs (MMWCNTs) that possess the property of both magnetic NPs and CNTs for the removal of tetracycline (TC).…”

Section: Nanotechnology In Wastewater Managementmentioning

confidence: 99%

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

et al. 2021

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Clean and safe water is a fundamental human need for multi-faceted development of society and a thriving economy. Brisk rises in populations, expanding industrialization, urbanization and extensive agriculture practices have resulted in the generation of wastewater which have not only made the water dirty or polluted, but also deadly. Millions of people die every year due to diseases communicated through consumption of water contaminated by deleterious pathogens. Although various methods for wastewater treatment have been explored in the last few decades but their use is restrained by many limitations including use of chemicals, formation of disinfection by-products (DBPs), time consumption and expensiveness. Nanotechnology, manipulation of matter at a molecular or an atomic level to craft new structures, devices and systems having superior electronic, optical, magnetic, conductive and mechanical properties, is emerging as a promising technology, which has demonstrated remarkable feats in various fields including wastewater treatment. Nanomaterials encompass a high surface to volume ratio, a high sensitivity and reactivity, a high adsorption capacity, and ease of functionalization which makes them suitable for application in wastewater treatment. In this article we have reviewed the techniques being developed for wastewater treatment using nanotechnology based on adsorption and biosorption, nanofiltration, photocatalysis, disinfection and sensing technology. Furthermore, this review also highlights the fate of the nanomaterials in wastewater treatment as well as risks associated with their use.

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Section: Nanotechnology In Wastewater Managementmentioning

confidence: 99%

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

et al. 2021

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“…Carbon nanotubes act as adsorbents for toxic chemicals from manufacturing industries or pharmaceutical wastewater. Kariim et al (2020) prepared multi-walled carbon nanotubes (MWCNTs) from Fe-Ni supported on activated carbon using the chemical vapor deposition (CVD) technique. Adsorption characteristics of 2.5961 and 2.1363 were found for metronidazole and levofloxacin, respectively, which come in a range of good adsorption of 2-10.…”

Section: Nano-adsorbents and Nanofiltration Membranesmentioning

confidence: 99%

Microbial Nanotechnology for Bioremediation of Industrial Wastewater

Mandeep

Shukla

2020

Front. Microbiol.

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Pollutant removal from industrial effluents is a big challenge for industries. These pollutants pose a great risk to the environment. Nanotechnology can reduce the expenditure made by industries to mitigate these pollutants through the production of eco-friendly nanomaterials. Nanomaterials are gaining attention due to their enhanced physical, chemical, and mechanical properties. Using microorganisms in the production of nanoparticles provides an even greater boost to green biotechnology as an emerging field of nanotechnology for sustainable production and cost reduction. In this mini review, efforts are made to discuss the various aspects of industrial effluent bioremediation through microbial nanotechnology integration. The use of enzymes with nanotechnology has produced higher activity and reusability of enzymes. This mini review also provides an insight into the advantages of the use of nanotechnology as compared to conventional practices in these areas.

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“…The observed positive ΔG° values (32.34 to 35.2 kJ/mol) indicate that MNZ adsorption type is non-spontaneously as in Table 3. 56,57 According to the small gap between energetic potentials of the process components that is responsible for the redistribution of MNZ molecules in the system. Moreover, the increase of positive ΔG° values with the raise of temperature suggests a slight increase of adsorption at high temperatures.…”

Section: Effects Of Sodium Inorganic Saltsmentioning

confidence: 99%

“…Also, negative values of ΔS° suggest that the type of MNZ adsorption in solution is chemisorption due to the favorable process that was carried out by the replacement of a small (limited) amount of ions. 56,57 On the other hand, thermodynamic parameters for the photodegradation process were investigated according to Arrhenius equation by using pseudo-first-order rate constants (k ap ).…”

Section: Effects Of Sodium Inorganic Saltsmentioning

confidence: 99%

<p>Differentiation Between Metronidazole Residues Disposal by Using Adsorption and Photodegradation Processes Onto MgO Nanoparticles</p>

Bouraie

Ibrahim

2020

IJN

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Background: Metronidazole (MNZ) is an antibiotic form that is considered as a dangerous environmental pollutant due to its widespread use as growth promoters in livestock and aquaculture operations along with its therapeutic application for humans. Purpose: The objective of this work was to conduct a comparative study between the efficiency of the adsorption and photocatalytic degradation of MNZ in an aqueous solution by using magnesium oxide nanoparticles (MgO NP) under different effects, as well as evaluate the performance, reusability and cost study. Materials and Methods: Several instruments such as XRD, EDX, SEM, and TEM were used to characterize the chemical composition and morphological properties of the synthesized MgO NP, while the GC-MS analysis was used to monitor the degradation pathway of MNZ particles within 180 min. The simple photo-batch reactor was used to investigate the degradation of MNZ under the effect of UV radiation, initial concentration of MNZ, pH, catalyst loading, inorganic salts addition, time, and temperature. Results: The degradation efficiency is mainly divided into two steps: 35.7% for maximum adsorption and 57.5% for photodegradation. Adsorption isotherm models confirmed that the process nature is chemisorption and appropriate Langmuir model, as well as to be a nonspontaneous and endothermic reaction according to the thermodynamic study. Adsorption constant during dark condition is smaller than typical adsorption equilibrium constant derived from the Langmuir-Hinshelwood kinetic model through photodegradation of MNZ that follows pseudo-first-order kinetics. Toxicity rates were reduced considerably after the photodegradation process to 88.21%, 79.84%, and 67.32% and 57.45%, 51.98%, and 43.87% by heamolytic and brine shrimp assays, respectively, for initial MNZ concentrations (20, 60, and 100 mg/L). Conclusion: We significantly recommend using MgO NP as a promising catalyst in the photodegradation applications for other organic pollutants in visible light.

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Development and characterization of MWCNTs from activated carbon as adsorbent for metronidazole and levofloxacin sorption from pharmaceutical wastewater: Kinetics, isotherms and thermodynamic studies

Cited by 29 publications

References 12 publications

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

Microbial Nanotechnology for Bioremediation of Industrial Wastewater

<p>Differentiation Between Metronidazole Residues Disposal by Using Adsorption and Photodegradation Processes Onto MgO Nanoparticles</p>

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