Adsorption and removal of perfluorinated compounds from aqueous solution using magnetic fluorinated porous carbons

IF 3 4区工程技术 Q3 CHEMISTRY, PHYSICAL Adsorption Pub Date : 2024-04-13 DOI:10.1007/s10450-024-00454-x

Han-Ying Zhan, You-Ming Lin, Rui-Yang Qin, Zhi-Qi Zhang

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Abstract

Perfluorinated compounds (PFCs) cause environmental pollution and serious health issues. Therefore, magnetic fluorinated porous carbons (M-FPCs) derived from the carbonization and further fluorination of Fe-Zr MOFs were used as novel adsorbents to investigate the possibility of PFC removal from wastewater. Investigation of the adsorption behavior of PFCs on M-FPCs revealed that the isotherms conformed to the Langmuir model and kinetics fit the pseudo-second-order model. Simulations using the Weber–Morris and Boyd diffusion models indicated that the adsorption of PFCs on M-FPCs involved external mass transfer first, followed by intraparticle diffusion, where film diffusion was the primary controlling process. M-FPCs with maximum adsorption ranging from 518.1 to 919.3 mg g^− 1 for studied PFCs were adopted to remove PFCs from simulated wastewaters of textile mill and leather factory. Up to 98.1–100.0% of PFCs were removed within 15 min, and the residual levels of PFCs reached drinking water standards after treatment, which suggests the promising application of M-FPCs in the removal of PFCs from wastewater.

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利用磁性氟化多孔碳吸附和去除水溶液中的全氟化合物

全氟化合物（PFCs）会造成环境污染和严重的健康问题。因此，研究人员使用由 Fe-Zr MOFs 碳化并进一步氟化得到的磁性氟化多孔碳（M-FPCs）作为新型吸附剂，研究从废水中去除 PFC 的可能性。对 PFCs 在 M-FPCs 上的吸附行为的研究表明，等温线符合 Langmuir 模型，动力学符合伪秒序模型。使用 Weber-Morris 和 Boyd 扩散模型进行的模拟表明，PFC 在 M-FPC 上的吸附首先涉及外部传质，然后是颗粒内扩散，其中薄膜扩散是主要的控制过程。采用对所研究的 PFCs 具有 518.1 至 919.3 mg g- 1 最大吸附量的 M-FPCs 来去除纺织厂和皮革厂模拟废水中的 PFCs。在 15 分钟内，PFCs 的去除率高达 98.1%-100.0%，处理后 PFCs 的残留量达到了饮用水标准，这表明 M-FPCs 在去除废水中的 PFCs 方面具有广阔的应用前景。

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来源期刊

Adsorption 工程技术-工程：化工

CiteScore

8.10

自引率

3.00%

发文量

审稿时长

2.4 months

期刊介绍： The journal Adsorption provides authoritative information on adsorption and allied fields to scientists, engineers, and technologists throughout the world. The information takes the form of peer-reviewed articles, R&D notes, topical review papers, tutorial papers, book reviews, meeting announcements, and news. Coverage includes fundamental and practical aspects of adsorption: mathematics, thermodynamics, chemistry, and physics, as well as processes, applications, models engineering, and equipment design. Among the topics are Adsorbents: new materials, new synthesis techniques, characterization of structure and properties, and applications; Equilibria: novel theories or semi-empirical models, experimental data, and new measurement methods; Kinetics: new models, experimental data, and measurement methods. Processes: chemical, biochemical, environmental, and other applications, purification or bulk separation, fixed bed or moving bed systems, simulations, experiments, and design procedures.