物理处理和水分含量对壳聚糖基水凝胶吸附低浓度乙炔雌二醇的影响

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-04-16 DOI:10.1016/j.jwpe.2025.107709

Trevor Bell , Jason Robert Tavares , Marie-Josée Dumont

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引用次数: 0

摘要

人类活动对环境的影响增加了对环境污染和水质的研究。报告新出现污染物的研究引起了人们的关注，因为它们对健康和生态系统的影响尚不清楚。激素活性物质是由天然和合成化合物组成的新兴污染物的一个突出的子类别。炔雌醇是一种合成的药物类固醇激素，由于其进入环境的机制和代谢抗性而受到关注。吸附技术由于其相对容易实施、成本效益和潜在的环境友好性而成为污染物去除的有利方法。水凝胶是三维亲水性网络链聚合物，其吸附能力是有案可依的。采用壳聚糖水凝胶吸附乙炔雌二醇，并与戊二醛交联以提高基质的疏水性。从历史上看，设计用于吸附炔雌醇的材料已经在高浓度下进行了测试，这与环境中测量的浓度是不现实的，因此在吸附测试中使用了低浓度的炔雌醇。探索微波处理、液氮浸泡、隔夜冷冻等物理处理方法，增加水凝胶的孔径和暴露表面积。合成后进行的处理增加了水凝胶的吸附能力，特别是当水分含量高时。在低浓度（400 ng/mL）条件下，微波处理的水凝胶对炔雌醇的吸附效果最好，吸附效率为62%。高含水率液氮处理的水凝胶和微波处理的水凝胶在较高浓度（5000 ng/mL）下吸附的乙炔雌二醇最多，去除率为61%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effects of physical treatments and moisture content on chitosan-based hydrogels designed to adsorb ethinylestradiol at low concentrations

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Effects of physical treatments and moisture content on chitosan-based hydrogels designed to adsorb ethinylestradiol at low concentrations

Anthropogenic impacts on the environment have increased research regarding environmental pollution and water quality. Studies reporting emerging contaminants have raised concerns as their effects on health and ecosystems are unknown. Hormonally active agents are a prominent subcategories of emerging contaminant pollution consisting of natural and synthetic compounds. Ethinylestradiol is a synthetic pharmaceutical steroid hormone of interest because of its mechanisms of entering the environment and its metabolic resistance. Adsorption technologies are favourable methods of pollutant removal due to their relative ease of implementation, cost-effectiveness, and potential for environmental friendliness. Hydrogels are three-dimensional hydrophilic networks of chain polymers that are well documented for their adsorption capabilities. Chitosan hydrogels were used to adsorb ethinylestradiol, and crosslinking was performed with glutaraldehyde to increase the hydrophobicity of the matrix. Historically, materials designed to adsorb ethinylestradiol have been tested at high concentrations which are unrealistic of what is measured in the environment, thus low concentrations of ethinylestradiol were used in adsorption testing. Physical treatment methods including microwave treatment, liquid nitrogen submersion, and overnight freezing were explored to increase the pore size and exposed surface area of the hydrogels. Treatments performed after synthesis increased the adsorption capacity of the hydrogels, particularly when the moisture content was high. Microwave-treated hydrogels adsorbed the most ethinylestradiol with an adsorption efficiency of 62 % when tested at a low ethinylestradiol concentration (400 ng/mL). High moisture content liquid nitrogen-treated hydrogels and microwave treated hydrogels adsorbed the most ethinylestradiol when tested at higher concentrations (5000 ng/mL), resulting in a removal efficiency of 61 %.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies