Ammoniated-Driven Green Synthesis of Charged Polyoxometalate Supported Ionic Liquids for Exceptional Heavy Metal Remediation in Actual Industrial Wastewater

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2024-12-09 DOI:10.1016/j.watres.2024.122939

Shuo Wang, Xilin Geng, Ziyi Zhao, Manyu Zhang, Yaran Song, Keju Sun, Qingrui Zhang

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引用次数: 0

Abstract

Reducing toxic metal concentrations to extremely low levels has long posed a challenge. Polyoxometalate supported ionic liquids (POM-SILs) offer significant potential for advanced water remediation, but their application is limited by complex preparation, toxic solvents, and poor stability due to leaching, compromising sustainability. We introduced a sustainable approach for selectively removing Pb(II) in complex electroplating wastewater using charged POM-SILs composite, synthesized by directly grafting lacunary Keggin ions ([α-SiW₁₁O₃₉]⁸⁻, SiW₁₁) onto charged ammoniated polystyrene via a straightforward, solvent-free process. These POM-SILs featured monodisperse nanoclusters (<5 nm) in a cross-linked polymer matrix, ensuring optimal site accessibility and enhanced stability with negligible leaching. They achieved exceptional Pb(II) selectivity, boasting a distribution coefficient (K_d) of 23,605 mL g⁻¹-over 120 times greater than conventional ion-exchange resins-and a Pb(II) removal efficiency exceeding 97.6%, even in high-salinity, diverse heavy metal environments. They reached a large Q_0.01 value of 0.371 mg g⁻¹, effectively treating up to 2,200 liters of wastewater per kg composite, reducing Pb(II) concentrations to below 0.01 mg L⁻¹, meeting drinking water standards. This method marks a substantial advancement in heavy metal remediation, offering an efficient and sustainable solution for industrial wastewater treatment.

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.