Multifunctional fully biobased aerogels for water remediation: Applications for dye and heavy metal adsorption and oil/water separation

Varamesh, Amir; Abraham, Brett; Wang, Hui; Bertón, Paula; Zhao, Heng; Gourlay, Keith; Minhas, Gurminder; Lu, Qingye; Bryant, Steven L.; Hu, Jinguang

doi:10.1016/j.jhazmat.2023.131824

Cited by 38 publications

(6 citation statements)

References 112 publications

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“…The slope of line (A) in this region represented the Young's modulus of WS, a metric that characterizes the material's stiffness or elasticity. The calculated Young's modulus of 1.717 kPa is notably low compared to other sorbents (Gundu et al 2023;Varamesh et al 2023;Zhai et al 2023…”

mentioning

confidence: 66%

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Saghir,

Goharshadi

2024

Preprint

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This study focuses on the development of a wood sponge (WS) modified with MnO2 nanorods (MnO2/WS) from balsa natural wood, as an abundant environmental-friendly raw material, to adsorb organic solvents, oils, and heavy metal ions from water. The MnO2/WS composite exhibits an exceptionally low density of 0.014 g cm− 3 and a high porosity exceeding 97%. MnO2/WS demonstrates successful sorption-desorption cycles over 20 iterations. Zeta potential analysis reveals the negative charge (-22.31 mV) of MnO2 nanorods at pH 4.68, underscoring their affinity for adsorbing positively-charged heavy metal ions commonly found in industrial effluents. Moreover, WS exhibits exceptional mechanical robustness, enduring 1000 stress-strain cycles with high shape recovery, ensuring its durability under operational conditions. Data above proved several strengths for MnO2/WS, such as cost-effective production process, high reusability, remarkable sorption capacities for carbon tetrachloride and soybean oil at 29.56 and 17.65 times its mass, respectively, efficient performance, and the capability to produce potable water from real industrial effluents position MnO2/WS as an ideal solution for mitigating water crises.

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confidence: 66%

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Saghir,

Goharshadi

2024

Preprint

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“…Fully bio-based aerogels (FBAs) were synthesized by combining cellulose filaments (CFs), chitosan (CS), and citric acid (CA), resulting in materials with excellent adsorption capacities for methylene blue and copper [38]. The synthetic strategy was defined as simple and scalable, thus providing aerogels with good mechanical properties due to several combined effects, such as electrostatic interactions involving CS and CFs, as well as hydrogen bonding.…”

Section: Cellulose-based Aerogelsmentioning

confidence: 99%

Bio-Based Aerogels for the Removal of Heavy Metal Ions and Oils from Water: Novel Solutions for Environmental Remediation

Boccia,

Neagu,

Pulvirenti

2023

Gels

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Contamination of the aqueous environment caused by the presence of heavy metal ions and oils is a growing concern that must be addressed to reduce their detrimental impact on living organisms and safeguard the environment. Recent efficient and environmentally friendly remediation methods for the treatment of water are based on third-generation bioaerogels as emerging applications for the removal of heavy metal ions and oils from aqueous systems. The peculiarities of these materials are various, considering their high specific surface area and low density, together with a highly porous three-dimensional structure and tunable surface chemistry. This review illustrates the recent progress in aerogels developed from cellulose and chitosan as emerging materials in water treatment. The potential of aerogel-based adsorbents for wastewater treatment is reported in terms of adsorption efficacy and reusability. Despite various gaps affecting the manufacturing and production costs of aerogels that actually limit their successful implementation in the market, the research progress suggests that bio-based aerogels are ready to be used in water-treatment applications in the near future.

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“…4,12 By incorporating extra hydroxyl groups into QCS chains, the obtained QCS flocculant exhibited enhanced H-bond hydration behavior to resist the salting-out effect in saline solution and demonstrated promising flocculation performance to saline colored effluents. 30,31 Our previous research 11 indicated that introducing catechol groups into QCS could exert the prepared catechol-grafted flocculant with multiple intermolecular interactions to efficiently treat suspended particles and refractory soluble organic pollutants in saline solution. However, most of these developed QCS flocculants were prepared by modifying reactive amino and hydroxyl functional groups on the CS skeleton and demanded delicate but troublesome tuning of the hydration ability and charge density to achieve good flocculation performance.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, QCS flocculants adopt a highly compact configuration with a lower hydration level in saline solutions and thus greatly reduce effective interactions between active sites of flocculant chains and pollutants. , Therefore, to achieve good pollutant removal performance for high-salinity colored effluents, it is of great importance to develop a viable strategy that endows the prepared QCS-based flocculant with enhanced hydration in aqueous solution to provide abundant active sites to interact with more pollutant species. Recently, hydrogen-bond (H-bond) has been emerging as an effective strategy to enhance the hydration of QCS-derived flocculants. , By incorporating extra hydroxyl groups into QCS chains, the obtained QCS flocculant exhibited enhanced H-bond hydration behavior to resist the salting-out effect in saline solution and demonstrated promising flocculation performance to saline colored effluents. , Our previous research indicated that introducing catechol groups into QCS could exert the prepared catechol-grafted flocculant with multiple intermolecular interactions to efficiently treat suspended particles and refractory soluble organic pollutants in saline solution. However, most of these developed QCS flocculants were prepared by modifying reactive amino and hydroxyl functional groups on the CS skeleton and demanded delicate but troublesome tuning of the hydration ability and charge density to achieve good flocculation performance.…”

Section: Introductionmentioning

confidence: 99%

Comb-Like Cationic Chitosan-Based Flocculant with Enhanced H-Bond Hydration for Effectively Treating Saline Colored Effluents with High Salinity

Yang,

Ban,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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Quaternized chitosan flocculants exhibit excellent removal efficiencies for anionic contaminants, while the treatment efficacy is greatly impeded for colored effluents with high salinity due to their lower hydration ability in saline solutions. In this work, we developed a new kind of comb-like cationic chitosanbased flocculants with hydrogen-bond (H-bond) enhanced hydration ability, CS-gp(DMC-co-HEMA) (CPDH), by grafting copolymerization of 2-hydroxyethyl methacrylate (HEMA) and methacrylatoethyl trimethylammonium chloride (DMC) onto chitosan skeletons. The hydroxyl groups from HEMA could improve the hydration ability of the developed CPDHs in a saline environment, while the abundant quaternary ammonium groups from DMC endow CPDHs with satisfactory antibacterial ability against both Staphylococcus aureus and Escherichia coli. Three CPDHs with different H-bond components were synthesized by tuning the molar ratio of DMC and HEMA and applied to treat different types of pollutants in saline solution using kaolin and anionic dyes as the model pollutants. Experiments showed that the developed CPDH1 with H-bond components exhibited excellent salinity tolerance and achieved more than 96% removal efficiency to methyl blue in both deionized water and saline conditions. In contrast, the removal efficiency of CPDH0 without the H-bond component in saline media was greatly undermined, showing more than a 12.5% decrease when compared to that in deionized water. Furthermore, CPDH1 demonstrated universal flocculation performance to effectively remove different pollutants including different anionic dyes and kaolin particles from different water sources with wide pH and salinity ranges, demonstrating a good tolerance of CPDH1 in diverse saline environments and providing a new approach to develop qualified biopolymer-based flocculants for treating saline dyeing wastewaters.

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Multifunctional fully biobased aerogels for water remediation: Applications for dye and heavy metal adsorption and oil/water separation

Cited by 38 publications

References 112 publications

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Bio-Based Aerogels for the Removal of Heavy Metal Ions and Oils from Water: Novel Solutions for Environmental Remediation

Comb-Like Cationic Chitosan-Based Flocculant with Enhanced H-Bond Hydration for Effectively Treating Saline Colored Effluents with High Salinity

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