Application of Terminalia catappa wood-based activated carbon modified with CuO nanostructures coupled with H2O2 for the elimination of chemical oxygen demand in the gas refinery

Rafieyan, Sayed Ghadir; Marahel, Farzaneh; Ghaedi, Mehrorang; Maleki, Afsaneh

doi:10.1007/s40097-021-00409-6

Cited by 4 publications

(2 citation statements)

References 68 publications

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“…CO + NiO → Ni + CO 2 (5) Then, in an acidic environment, the surface active groups of biochar and Ni 0 undergo reduction and complexation reactions with Cr (VI) [53]. These chemisorption processes can be described in Equations ( 6)- (12) Finally, the chemisorption also works on the principle of sharing and transferring electron pairs between biochar and Cr (VI), with Ni 7 P 3 acting as a high-charge-mobility electron donor during the absorption process, which is marked as (1) ion exchange in Figure 13.…”

Section: Discussionmentioning

confidence: 99%

“…With respect to wastewater treatment, various techniques, such as electrolysis, chemical precipitation, ion exchange, membrane separation, and adsorption, have been successfully developed and applied to eliminate heavy metals from wastewater [3,4]. Among these technologies, the adsorption method has outstanding advantages, including a low cost, a simple process, and environmental friendliness, and is considered as efficient as most of the other methods chosen for the removal of heavy metals from wastewater [5,6]. In the past few decades, biochar (mainly from agricultural and forestry wastes) has been considered one of the most promising and environmentally friendly adsorbent materials due to its large specific surface area, unique porous structure, richness in surface functional groups and active sites, and stable physical/chemical properties, as well as having the advantage of "turning wastes into wealth" [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

Hu,

Zhang,

Chen

et al. 2024

Molecules

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A high-efficiency nickel-doped porous biochar (PCNi3) has been successfully synthesized from chestnut shell waste via a two-step chemical activation treatment with H3PO4. The influences of microstructure, surface morphology, elemental composition, surface functional groups, specific surface area, porosity, pore-size distribution, and chemical properties of the surface state on the removal of Cr (VI) from water were thoroughly investigated by using XRD, FESEM, FTIR, Raman, BET, and XPS testing methods, N2 adsorption, and XPS testing techniques respectively. The results indicate that the treatment of H3PO4 activation and nickel doping can effectively improve microstructure characteristics, thus promoting Cr (VI) adsorption capacity. The effects of initial solution pH, solution concentration, time, and temperature on remediation are revealed. The Cr (VI) uptake experiments imply that the adsorption curves of PCNi3 fit well with the Freundlich model, the pseudo-second-order kinetic model, and the Elovich model. The adsorption process of PCNi3 can be regarded as a spontaneous endothermic reaction limited by diffusion among particles and porosity. The adsorption mechanisms of PCNi3 are ion exchange, complexation, electrostatic adsorption, and coprecipitation with the assistance of surface active sites, porosity, Ni0 particles, and Ni7P3. With these advantages, PCNi3 reveals an extraordinary Cr (VI) removal capacity and a strong ability to reduce Cr (VI) to Cr (III).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

Hu,

Zhang,

Chen

et al. 2024

Molecules

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Nanoscale CoNi alloy@carbon derived from Hofmann-MOF as a magnetic/effective activator for monopersulfate to eliminate an ultraviolet filter

et al. 2022

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Bioengineering of CuO porous (nano)particles: role of surface amination in biological, antibacterial, and photocatalytic activity

Bagherzadeh

Safarkhani

Ghadiri

et al. 2022

Sci Rep

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Nanotechnology is one of the most impressive sciences in the twenty-first century. Not surprisingly, nanoparticles/nanomaterials have been widely deployed given their multifunctional attributes and ease of preparation via environmentally friendly, cost-effective, and simple methods. Although there are assorted optimized preparative methods for synthesizing the nanoparticles, the main challenge is to find a comprehensive method that has multifaceted properties. The goal of this study has been to synthesize aminated (nano)particles via the Rosmarinus officinalis leaf extract-mediated copper oxide; this modification leads to the preparation of (nano)particles with promising biological and photocatalytic applications. The synthesized NPs have been fully characterized, and biological activity was evaluated in antibacterial assessment against Bacillus cereus as a model Gram-positive and Pseudomonas aeruginosa as a model Gram-negative bacterium. The bio-synthesized copper oxide (nano)particles were screened by MTT assay by applying the HEK-293 cell line. The aminated (nano)particles have shown lower cytotoxicity (~ 21%), higher (~ 50%) antibacterial activity, and a considerable increase in zeta potential value (~ + 13.4 mV). The prepared (nano)particles also revealed considerable photocatalytic activity compared to other studies wherein the dye degradation process attained 97.4% promising efficiency in only 80 min and just 7% degradation after 80 min under dark conditions. The biosynthesized copper oxide (CuO) (nano)particle’s biomedical investigation underscores an eco-friendly synthesis of (nano)particles, their noticeable stability in the green reaction media, and impressive biological activity.

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Application of Terminalia catappa wood-based activated carbon modified with CuO nanostructures coupled with H2O2 for the elimination of chemical oxygen demand in the gas refinery

Cited by 4 publications

References 68 publications

Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

Nanoscale CoNi alloy@carbon derived from Hofmann-MOF as a magnetic/effective activator for monopersulfate to eliminate an ultraviolet filter

Bioengineering of CuO porous (nano)particles: role of surface amination in biological, antibacterial, and photocatalytic activity

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