{"title":"Sustainable synergistic adsorption of tetracycline in water by biochar and microplastics: Exploration of the mechanism of DFT","authors":"Huating Jiang, Hui Hu","doi":"10.1016/j.jwpe.2024.105998","DOIUrl":null,"url":null,"abstract":"<div><p>Microplastics (MPs) were found to be a novel carrier for tetracycline (TC) in aquatic environments. Therefore, the synergistic adsorption treatment of TC in water based on biochar (BC) and MPs was explored in this study. Polyethylene, polypropylene, and polyvinyl chloride were selected for aging treatment and added to biochar obtained from vitamin C-modified crayfish shells (CSB-VC), which performed best in preliminary adsorption experiments. The pseudo second order kinetic model and Freundlich isotherm model are more suitable for describing the synergistic adsorption process. Under the synergistic effects of CSB-VC-PE, CSB-VC-PP, and CSB-VC-PVC, the saturation adsorption capacities were determined as 275.99 mg/g, 275.24 mg/g, and 284.48 mg/g, respectively. In actual water experiments, the four adsorption systems still exhibit good synergistic performance with <em>Q</em><sub><em>e</em></sub> > 245 mg/g. Characterization, experiments, and DFT calculations confirm that van der Waals force, hydrogen bonding and electrostatic interaction were the main adsorption mechanisms in the synergistic interactions between CSB-VC and MPs. The study of the synergistic adsorption mechanism between biochar and MPs provides a foundation for further comprehensive research on the sustainable development of complex solutions to various environmental pollution problems.</p></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"66 ","pages":"Article 105998"},"PeriodicalIF":6.3000,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of water process engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214714424012303","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Microplastics (MPs) were found to be a novel carrier for tetracycline (TC) in aquatic environments. Therefore, the synergistic adsorption treatment of TC in water based on biochar (BC) and MPs was explored in this study. Polyethylene, polypropylene, and polyvinyl chloride were selected for aging treatment and added to biochar obtained from vitamin C-modified crayfish shells (CSB-VC), which performed best in preliminary adsorption experiments. The pseudo second order kinetic model and Freundlich isotherm model are more suitable for describing the synergistic adsorption process. Under the synergistic effects of CSB-VC-PE, CSB-VC-PP, and CSB-VC-PVC, the saturation adsorption capacities were determined as 275.99 mg/g, 275.24 mg/g, and 284.48 mg/g, respectively. In actual water experiments, the four adsorption systems still exhibit good synergistic performance with Qe > 245 mg/g. Characterization, experiments, and DFT calculations confirm that van der Waals force, hydrogen bonding and electrostatic interaction were the main adsorption mechanisms in the synergistic interactions between CSB-VC and MPs. The study of the synergistic adsorption mechanism between biochar and MPs provides a foundation for further comprehensive research on the sustainable development of complex solutions to various environmental pollution problems.
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
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