Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

Cardoso, Inês M. F.; Silva, Luís Pinto da; Silva, Joaquim C. G. Esteves da

doi:10.3390/nano13101668

Cited by 15 publications

(4 citation statements)

References 100 publications

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“…The molecular interactions that can be leveraged to remove PFAS include electrostatic, hydrophobic, and morphological traits of the adsorbent . On this accord, Li et al investigated the use of polyethylenimine-grafted lignin nanoparticles (positively charged) embedded in cellulose nanofibrils as an effective adsorbent for PFAS (perfluorooctanoic, and perfluoro-1-octanesulfonic acids) in an aqueous environment, observing that the positively charged coating, hydrophobic core, and surface area of the lignin nanoparticles promoted anionic PFAS adsorption by electrostatic and hydrophobic attractions . Nonetheless, the morphological variations of lignin nanoparticles are yet to be explored for optimized resource recovery from wastewater.…”

Section: Advances In Use Of Lignin Nanoparticles For Resource Recover...mentioning

confidence: 99%

Lignin Smart Nanoparticles for Effective and Eco-Friendly Resource Recovery from Wastewater: Status, Challenges, and Opportunities

Andeme Ela,

Heiden

2024

ACS Sustainable Resour. Manage.

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The overexploitation of finite natural resources and anthropogenic pollution pose a threat to economic security and human health. One approach for tackling these challenges is the development of effective, accessible, low-cost, bioderived, and eco-friendly technologies for the recovery of resources from wastewater. Wastewater contains resources of appreciable market value, including metals, pesticides, inorganic nutrients, dyes, and per- and polyfluorinated substances (PFAS). Established technologies, such as low-pressure membranes, biological treatments, and oxidation, are ineffectual, while more intricate technologies such as customized granular activated carbon and anion exchange resins suffer predominantly from high fouling rates and operating costs, which eventually reduce the effectiveness of resource recovery; thus, these limitations motivate the development of experimental technologies. Green, biopolymeric, smart lignin nanoparticles are potential candidates growing in popularity for their effective recovery of resources from wastewater via adsorption, as lignin-based nanoparticles with metal adsorption capacities higher than 40 mg/g have been reported. In addition, employing lignin nanoparticles for this purpose will promote the circular economy of biorefineries and support the sustainable development of nations. Nonetheless, the valorization of lignin through nanotechnology is limited by the inhomogeneity of technical lignins and the resultant nanoparticles. For instance, the physical (e.g., surface area and electrostatic charge) and chemical (e.g., concentration of hydroxyl and carbonyl groups) properties of the lignin precursor will determine the affinity of the resultant nanoparticles to specific metal ions and their adsorption capacity. Hence, a profound understanding of the relationship between lignin derivation and nanoparticle synthetic methodology with resultant nanoparticle properties (e.g., hydrodynamic size) and performance (i.e., adsorption capacity) is needed to advance the adoption of lignin nanoparticles in sustainable industrial wastewater treatment. Alas, reviews of this nature are lacking. To fill this gap, this perspective reflects on the state-of-the art techniques for lignin nanoparticle synthesis and their application in the retrieval of various substances from aqueous environments, highlighting the properties–performance correlations, the specificity of the nanoparticles, and their comparative performance against established and laboratory-scale technologies. Ultimately, standardized strategies will be needed to control the functionality of lignin nanoparticles (e.g., hydrodynamic size and programmable morphology) to enhance the effective recovery of valuable resources from copious and diverse wastewater resources.

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Section: Advances In Use Of Lignin Nanoparticles For Resource Recover...mentioning

confidence: 99%

Lignin Smart Nanoparticles for Effective and Eco-Friendly Resource Recovery from Wastewater: Status, Challenges, and Opportunities

Andeme Ela,

Heiden

2024

ACS Sustainable Resour. Manage.

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“…Metal organic frame works, titanium oxide nanoparticles are extensively used for removing PFAS. However, scalability and cost are issues and hunt for ideal nanomaterials is ongoing [46].…”

Section: Polyfluoroalkyl and Perfluoroalkyl Substancesmentioning

confidence: 99%

“…Recently a metal organic framework compound termed PCN-222 that is made from zirconium tetroxide and the ligand tetrakis (4 carboxyphenyl) porphyrin (TCPP) showed high PFAS adsorption [46]. However, commercially scalable removal of PFAS was obtained by Surface-Active Foam Fractionation (SAFF) at the Telge Recycling plant in Sweden [47].…”

Section: Polyfluoroalkyl and Perfluoroalkyl Substancesmentioning

confidence: 99%

Environmental Contaminants of Emerging Concern: Occurrence and Remediation

Prasad,

Elchuri

2023

Chemistry-Didactics-Ecology-Metrology

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Certain contaminants are termed as emerging (Contaminants of Emerging Concern, CEC) since all aspects of these pollutants are not known and their regulation is not ununiform across the nations. The CECs include many classes of compounds that are used in various industries, plant protection chemicals, personal care products and medicines. They accumulate in waterbodies, soils, organisms including humans. They cause deleterious effects on plant animal and human health. Therefore, alternative greener synthesis of these chemicals, sustainable economic methods of waste disposal, scaling up and circular methods using sludge for removing the contaminants are innovative methods that are pursued. There are several improvements in chemical waste treatments using electro-oxidation coupled with solar energy, high performing recycled granular activated charcoal derived from biomass are few advances in the field. Similarly, use of enzymes from microbes for waste removals is a widely used technique for bioremediation. The organisms are genetically engineered to remove hazardous chemicals, dyes, and metals. Novel technologies for mining economically the precious and rare earth elements from e-waste can improve circular economy. However, there is additional need for participation of various nations in working towards greener Earth. There should be pollution awareness in local communities that can work along with Government legislations.

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“…Advanced oxidation processes (AOPs) represent a potent suite of technologies for the oxidative degradation of pollutants via reactive oxidative species, such as hydroxyl (•OH) and sulfate radicals (SO 4 • − ) [16][17][18]. Traditional AOPs predominantly generate hydroxyl radicals as oxidants to decompose organic contaminants, a subset known as hydroxyl-radical-based AOPs (HR AOPs) [19,20].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cobalt–Nitrogen Co-Doped Carbon Nanotubes for Activated Peroxymonosulfate Degradation of Carbamazepine

Chu,

Tan,

Lou

et al. 2024

Molecules

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Cobalt–nitrogen co-doped carbon nanotubes (Co3@NCNT-800) were synthesized via a facile and economical approach to investigate the efficient degradation of organic pollutants in aqueous environments. This material demonstrated high catalytic efficiency in the degradation of carbamazepine (CBZ) in the presence of peroxymonosulfate (PMS). The experimental data revealed that at a neutral pH of 7 and an initial CBZ concentration of 20 mg/L, the application of Co3@NCNT-800 at 0.2 g/L facilitated a degradation rate of 64.7% within 60 min. Mechanistic investigations indicated that the presence of pyridinic nitrogen and cobalt species enhanced the generation of reactive oxygen species. Radical scavenging assays and electron spin resonance spectroscopy confirmed that radical and nonradical pathways contributed to CBZ degradation, with the nonradical mechanism being predominant. This research presents the development of a novel PMS catalyst, synthesized through an efficient and stable method, which provides a cost-effective solution for the remediation of organic contaminants in water.

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Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

Cited by 15 publications

References 100 publications

Lignin Smart Nanoparticles for Effective and Eco-Friendly Resource Recovery from Wastewater: Status, Challenges, and Opportunities

Lignin Smart Nanoparticles for Effective and Eco-Friendly Resource Recovery from Wastewater: Status, Challenges, and Opportunities

Environmental Contaminants of Emerging Concern: Occurrence and Remediation

Preparation of Cobalt–Nitrogen Co-Doped Carbon Nanotubes for Activated Peroxymonosulfate Degradation of Carbamazepine

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