A novel sludge-based biochar composite adsorbent CS/SBC-H<sub>3</sub>PO<sub>4</sub> for efficient Cr(<scp>vi</scp>) removal from aqueous solution

Wang, Hui; Zhong, Dengjie; Xu, Yunlan; Liao, Pengfei

doi:10.1039/d3nj03672c

New J. Chem.

2023

DOI: 10.1039/d3nj03672c

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A novel sludge-based biochar composite adsorbent CS/SBC-H₃PO₄ for efficient Cr(vi) removal from aqueous solution

Hui Wang,

Dengjie Zhong,

Yunlan Xu

et al.

Abstract: In order to solve the problem of more impurities and less functional groups on the surface of sludge-based biochar, phosphoric acid and chitosan were used to co-modify sludge-based biochar (CS/SBC-H3PO4) to enhance the removal of Cr(vi).

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Monodispersed and Organic Amine Modified La(OH)₃ Nanocrystals for Superior Advanced Phosphate Removal

Hu,

Zhan,

Zhao

et al. 2024

Advanced Materials

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Advanced phosphate removal is critical for alleviating the serious and widespread aquatic eutrophication, strongly depending on the development of superior adsorption materials to overcome low chemical affinity and sluggish mass transfer at low phosphate concentrations. Herein, the first synthesis of monodispersed and organic amine modified lanthanum hydroxide nanocrystals (OA‐La(OH)3) for advanced phosphate removal by modulating inner Helmholtz plane (IHP), is reported. These OA‐La(OH)3 nanocrystals with positively charged surfaces and abundant exposed La sites exhibit specific affinity toward phosphate, delivering a maximum adsorption capacity of 168 mg P g⁻1 and a wide pH adaptability from 3.0 to 11.0, as well as a robust anti‐interference performance, far surpassing those of documented phosphate removal materials. The superior phosphate removal performance of OA‐La(OH)3 is attributed to its protonated organic amine in IHP, which enhances the electrostatic attraction around the adsorbent‐solution interface. Impressively, OA‐La(OH)3 can treat ≈5 000 and ≈3 200 bed volumes of simulated and real phosphate‐containing wastewater to below extremely strict standard (0.1 mg L⁻1) in a fixed‐bed adsorption mode, exhibiting great potential for advanced phosphate removal. This study offers a facile modification strategy to improve phosphate removal performance of nanoscale adsorbents, and sheds light on the structure‐reactivity relationship of La‐based materials.

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Monodispersed and Organic Amine Modified La(OH)₃ Nanocrystals for Superior Advanced Phosphate Removal

Hu,

Zhan,

Zhao

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

Adsorption of food dyes from aqueous solution on a sweet potato residue-derived carbonaceous adsorbent: Analytical interpretation of adsorption mechanisms via adsorbent characterization and statistical physics modeling

Diao,

Zhang,

et al. 2024

Chemical Engineering Journal

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Recent development of natural polysaccharide-modified biochar on adsorption of pollutants from wastewater: Preparation, characterization, mechanisms and applications

Wang,

Tang,

Zhang

et al. 2024

Separation and Purification Technology

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A novel sludge-based biochar composite adsorbent CS/SBC-H₃PO₄ for efficient Cr(vi) removal from aqueous solution

Abstract: In order to solve the problem of more impurities and less functional groups on the surface of sludge-based biochar, phosphoric acid and chitosan were used to co-modify sludge-based biochar (CS/SBC-H3PO4) to enhance the removal of Cr(vi).

Cited by 5 publications

References 49 publications

Monodispersed and Organic Amine Modified La(OH)₃ Nanocrystals for Superior Advanced Phosphate Removal

Monodispersed and Organic Amine Modified La(OH)₃ Nanocrystals for Superior Advanced Phosphate Removal

Adsorption of food dyes from aqueous solution on a sweet potato residue-derived carbonaceous adsorbent: Analytical interpretation of adsorption mechanisms via adsorbent characterization and statistical physics modeling

Recent development of natural polysaccharide-modified biochar on adsorption of pollutants from wastewater: Preparation, characterization, mechanisms and applications

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A novel sludge-based biochar composite adsorbent CS/SBC-H3PO4 for efficient Cr(vi) removal from aqueous solution

Abstract: In order to solve the problem of more impurities and less functional groups on the surface of sludge-based biochar, phosphoric acid and chitosan were used to co-modify sludge-based biochar (CS/SBC-H3PO4) to enhance the removal of Cr(vi).

Cited by 5 publications

References 49 publications

Monodispersed and Organic Amine Modified La(OH)3 Nanocrystals for Superior Advanced Phosphate Removal

Monodispersed and Organic Amine Modified La(OH)3 Nanocrystals for Superior Advanced Phosphate Removal

Adsorption of food dyes from aqueous solution on a sweet potato residue-derived carbonaceous adsorbent: Analytical interpretation of adsorption mechanisms via adsorbent characterization and statistical physics modeling

Recent development of natural polysaccharide-modified biochar on adsorption of pollutants from wastewater: Preparation, characterization, mechanisms and applications

Contact Info

Product

Resources

About

A novel sludge-based biochar composite adsorbent CS/SBC-H₃PO₄ for efficient Cr(vi) removal from aqueous solution

Monodispersed and Organic Amine Modified La(OH)₃ Nanocrystals for Superior Advanced Phosphate Removal

Monodispersed and Organic Amine Modified La(OH)₃ Nanocrystals for Superior Advanced Phosphate Removal