Modified biomass adsorbents for removal of organic pollutants: a review of batch and optimization studies

Adegoke, Kayode Adesina; Akinnawo, Solomon Oluwaseun; Adebusuyi, T. A.; Ajala, Oluwaseyi Aderemi; Adegoke, Rhoda Oyeladun; Maxakato, Nobanathi Wendy; Bello, Olugbenga Solomon

doi:10.1007/s13762-023-04872-2

Cited by 16 publications

(1 citation statement)

References 190 publications

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“…As the concentration rises, more molecules come into contact with the Ag-MOF surface, increasing the amount of DOX that can be adsorbed. The fact that there were a large number of potential adsorption sites on the adsorbent that were sufficient to totally successfully absorb DOX at the lower initial DOX concentration resulted in notable removal rates . However, DOX concentrations increased, less adsorption sites were relatively accessible on the substance’s surface, and those that were still there were not enough to successfully bind DOX.…”

Section: Resultsmentioning

confidence: 99%

Application of Metal–Organic Frameworks for Efficient Removal of Doxorubicin Hydrochloride: Removal Process Optimization and Biological Activity

Alkhamis,

Aljohani,

Ibarhiam

et al. 2023

ACS Omega

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This study looked at the doxorubicin hydrochloride (DOX) anticancer drug's adsorption characteristics on a silverbased metal−organic framework (Ag-MOF). X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) were used for the characterization of Ag-MOF. The pore volume and surface area of Ag-MOF were determined through Brunauer−Emmett−Teller (BET) testing at 77 K to be 0.509 cm 3 /g and 676.059 m 2 /g, respectively. Adsorption at pH 6 was established to be the best for DOX compared to alkaline solution. Ag-MOF has a good capacity for eliminating DOX (1.85 mmol/g), according to adsorption experiments. From the adsorption results, we can find that Langmuir is the most fitted adsorption isotherm model and the pseudo-second order model best fitted the adsorption kinetics. The energy of activation for adsorption, which was determined to be 15.23 kJ/mol, also supported a chemisorption process. The mechanism of adsorption was evaluated, and details of all possible interactions between DOX and Ag-MOF were illustrated. On the other hand, while examining the impact of temperature, we identified the thermodynamic constraints as ΔG°, ΔH°, and ΔS°and confirmed that the reaction was an endothermic one and spontaneous. Even after numerous reuse cycles, the efficiency remained constant. The synthetic adsorbent was remarkably recyclable at a rate of more than 91.6%. By using the MTT assay, the cytotoxicity of the tested Ag-MOF and DOX@Ag-MOF against human breast cancer cells (MCF-7) was evaluated in vitro. The in vitro antimicrobial activity of Ag-MOF and DOX@Ag-MOF was also tested.

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Section: Resultsmentioning

confidence: 99%