Green synthesis of zero-valent iron nanoparticles and loading effect on activated carbon for furfural adsorption

Rashtbari, Yousef; Sher, Farooq; Afshin, Shirin; Hamzezadeh, Asghar; Ahmadi, Shahin; Azhar, Ofaira; Rastegar, Ayoob; Ghosh, Soumya; Poureshgh, Yousef

doi:10.1016/j.chemosphere.2021.132114

Cited by 97 publications

(20 citation statements)

References 43 publications

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“…Selecting the adsorbent is a crucial step in designing an effective adsorption process. Many adsorbents are available in the literature for efficient dye removal, including activated carbons, − chitosan composites, , metal–organic framework (MOF) materials, porous silica materials, − carbon nanotubes, graphene oxide, and so forth. However, these materials have several disadvantages, including complex synthesis routes and extremely high costs, limiting their application in adsorption processes.…”

Section: Introductionmentioning

confidence: 99%

3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

et al. 2022

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A biomass amino silica-functionalized material was successfully prepared by a simple sol–gel method. 3-Aminopropyltriethoxysilane (APTES) was added to a tannin-rich grape residue to improve its physicochemical properties and enhance the adsorption performance. The APTES functionalization led to significant changes in the material’s characteristics. The functionalized material was efficiently applied in the removal of methyl orange (MO) due to its unique characteristics, such as an abundance of functional groups on its surface. The adsorption process suggests that the electrostatic interactions were the main acting mechanism of the MO dye removal, although other interactions can also take place. The functionalized biomass achieved a very high MO dye maximum adsorption capacity ( Q max ) of 361.8 mg g –1 . The temperature positively affected the MO removal, and the thermodynamic studies indicated that the adsorption of MO onto APTES-functionalized biomass was spontaneous and endothermic, and enthalpy is driven in the physisorption mode. The regeneration performance revealed that the APTES-functionalized biomass material could be easily recycled and reused by maintaining very good performance even after five cycles. The adsorbent material was also employed to treat two simulated dye house effluents, which showed 48% removal. At last, the APTES biomass-based material may find significant applications as a multifunctional adsorbent and can be used further to separate pollutants from wastewater.

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Section: Introductionmentioning

confidence: 99%

3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

et al. 2022

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“…However, elevating the concentration of AC-nZVI/Cu to 0.9 g/L (98.90%) rendered the NOR removal efficiency sluggish, which is primarily due to the buildup of adsorbent, causing a limited number of reactive sites. [55,56]. As a result, a higher dose leads to a quicker rise in removal efficiency.…”

Section: Factors Affecting Removal Of Nor 321 Effect Of Adsorbent Dosagementioning

confidence: 99%

Removal of norfloxacin by combining persulfate with nano zero-valent iron modified by activated carbon and copper nanocomposite

Zhang

Chen

Liang

2022

Environmental Engineering Research

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Advanced oxidation process (AORs) is an effective method to remove a wide range of organic contaminants. However, an outstanding catalysis is needed to generate more free radicals. In this work, nano zero-valent iron (nZVI) modified with activated carbon and copper (AC-nZVI/Cu) was synthesized by liquid-phase reduction, and used to catalyze persulfate (PS) to remove norfloxacin (NOR). The effect of various factors, such as diverse adsorbents, pH, temperature, PS dosage, adsorbent dosage, and inorganic anions, on NOR removal efficiency were investigated. The results show that 30 mg/L NOR can be easily removed by 0.5 g/L AC-nZVI/Cu at 313 K through activating 0.5 mM PS, and the removal efficiency is as high as 96.84%. The electron paramagnetic resonance (EPR) analysis proves that numerous sulfate free radicals (•SO4 -) appear at the initial stage of the removal process. Furthermore, the quenching experiments manifested that •SO4was the predominant radical special in acidic conditions, while adsorption of NOR was predominant under alkaline conditions. Importantly, compared with nZVI, AC-nZVI/Cu has excellent long-term stability because of the introduction of activated carbon and copper. The study laid the groundwork for further development of adsorbent and activator based on nZVI.

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“…Conventional technologies have a limited lifetime, generate hazardous and toxic environmental wastes, and are non-renewable. For several years, NPs have been the subject of numerous research publications, and patents, because of their large surface area, high resistance to heat and chemicals, and high adsorption capacity for the removal of organic and inorganic contaminants [ 7 , 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Chitosan Nanoparticles as Potential Nano-Sorbent for Removal of Toxic Environmental Pollutants

Benettayeb

Seihoub

Pal³

et al. 2023

Nanomaterials

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Adsorption is the most widely used technique for advanced wastewater treatment. The preparation and application of natural renewable and environmentally friendly materials makes this process easier and more profitable. Chitosan is often used as an effective biomaterial in the adsorption world because of its numerous functional applications. Chitosan is one of the most suitable and functionally flexible adsorbents because it contains hydroxyl (-OH) and amine (-NH2) groups. The adsorption capacity and selectivity of chitosan can be further improved by introducing additional functions into its basic structure. Owing to its unique surface properties and adsorption ability of chitosan, the development and application of chitosan nanomaterials has gained significant attention. Here, recent research on chitosan nanoparticles is critically reviewed by comparing various methods for their synthesis with particular emphasis on the role of experimental conditions, limitations, and applications in water and wastewater treatment. The recovery of pollutants using magnetic nanoparticles is an important treatment process that has contributed to additional development and sustainable growth. The application of such nanoparticles in the recovery metals, which demonstrates a “close loop technology” in the current scenarios, is also presented in this review.

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Green synthesis of zero-valent iron nanoparticles and loading effect on activated carbon for furfural adsorption

Cited by 97 publications

References 43 publications

3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

3-Aminopropyl-triethoxysilane-Functionalized Tannin-Rich Grape Biomass for the Adsorption of Methyl Orange Dye: Synthesis, Characterization, and the Adsorption Mechanism

Removal of norfloxacin by combining persulfate with nano zero-valent iron modified by activated carbon and copper nanocomposite

Chitosan Nanoparticles as Potential Nano-Sorbent for Removal of Toxic Environmental Pollutants

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