Porous polydopamine nanospheres with yolk shell-like structure to effectively remove methylene blue, bisphenol A, and tetracycline from wastewaters

Wang, Haibo; Dong, Wentao; Gao, Zhiwei; Zhou, Yifan; Shi, Zi-Qi; Lu, Xunyu; Yan, Bin

doi:10.1039/d2nj05587b

Cited by 3 publications

(2 citation statements)

References 56 publications

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“…MB and kaolin particles were used to simulate soluble organic pollutants and suspended particles in industrial wastewater. , …”

Section: Experimental Methodsmentioning

confidence: 99%

“…MB and kaolin particles were used to simulate soluble organic pollutants and suspended particles in industrial wastewater. 35,36 The flocculant was typically used at a concentration of 2.5 g/ L. For the dissolved contaminant, a stock MB solution of 1 g/L was first prepared and diluted with deionized water to a particular concentration for further use. To investigate the pH effect on the flocculation performance, HCl and NaOH solutions (1 M) were used to adjust their pH value.…”

Section: Characterization Of Cpdhmentioning

confidence: 99%

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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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“…MB and kaolin particles were used to simulate soluble organic pollutants and suspended particles in industrial wastewater. , …”

Section: Experimental Methodsmentioning

confidence: 99%

Section: Characterization Of Cpdhmentioning

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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A novel porous aromatic framework with mesopores for removal of antibiotics from water

Zhao,

Li,

Wang

et al. 2023

Inorganic Chemistry Communications

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Mild NIR controlled NO-Releasing adenine-based composite hydrogel with excellent Antimicrobial, wound adaptiveness and angiogenic capabilities for rapid bacterial-infected wounds healing

He,

Wang,

Chen

et al. 2024

Materials & Design

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Porous polydopamine nanospheres with yolk shell-like structure to effectively remove methylene blue, bisphenol A, and tetracycline from wastewaters

Abstract: Nano-adsorbents have been widely utilized in wastewater treatment but still face the challenges of single-adsorption objects, difficulty to recycle, and low adsorption capacity. Wastewaters with complex contaminants urgently need a...

Cited by 3 publications

References 56 publications

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

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

A novel porous aromatic framework with mesopores for removal of antibiotics from water

Mild NIR controlled NO-Releasing adenine-based composite hydrogel with excellent Antimicrobial, wound adaptiveness and angiogenic capabilities for rapid bacterial-infected wounds healing

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