The Impact of Solution Ionic Strength, Hardness, and pH on the Sorption Efficiency of Polychlorinated Biphenyls in Magnetic Nanocomposite Microparticle (MNM) Gels

Author:

Gutierrez Angela M.12,Dziubla Thomas D.23,Hilt J. Zach23ORCID

Affiliation:

1. Department of Civil Engineering, University of Kentucky, Lexington, KY 40506, USA

2. Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA

3. Superfund Research Center, University of Kentucky, Lexington, KY 40506, USA

Abstract

Environmental conditions of groundwater and surface water greatly vary as a function of location. Factors such as ionic strength, water hardness, and solution pH can change the physical and chemical properties of the nanocomposites used in remediation and the pollutants of interest. In this work, magnetic nanocomposite microparticle (MNM) gels are used as sorbents for remediation of PCB 126 as model organic contaminant. Three MNM systems are used: curcumin multiacrylate MNMs (CMA MNMs), quercetin multiacrylate MNMs (QMA MNMs), and polyethylene glycol-400-dimethacrylate MNMs (PEG MNMs). The effect of ionic strength, water hardness, and pH were studied on the sorption efficiency of the MNMs for PCB 126 by performing equilibrium binding studies. It is seen that the ionic strength and water hardness have a minimal effect on the MNM gel system sorption of PCB 126. However, a decrease in binding was observed when the pH increased from 6.5 to 8.5, attributed to anion-π interactions between the buffer ions in solution and the PCB molecules as well as with the aromatic rings of the MNM gel systems. Overall, the results indicate that the developed MNM gels can be used as magnetic sorbents for polychlorinated biphenyls in groundwater and surface water remediation, provided that the solution pH is controlled.

Funder

National Institute of Environmental Health Sciences (NIEHS) of the National Institute of Health

Publisher

MDPI AG

Subject

Polymers and Plastics,Organic Chemistry,Biomaterials,Bioengineering

Reference55 articles.

1. Globalization, Green Economy and Environmental Challenges: State of the Art Review for Practical Implications;Zhang;Front. Environ. Sci. Eng.,2022

2. Global water pollution and human health;Schwarzenbach;Annu. Rev. Furth.,2010

3. (2023, January 05). Laws and Executive Orders, Available online: https://www.epa.gov/laws-regulations/laws-and-executive-orders.

4. The Brisbane Declaration and Global Action Agenda on Environmental Flows;Arthington;Front. Environ. Sci. Eng.,2018

5. EU Water Framework Directive and Stockholm Convention: Can we reach the targets for priority substances and persistent organic pollutants?;Fuerhacker;Environ. Sci. Pollut. Res.,2009

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3