Affiliation:
1. Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, Greensboro, NC 27401, USA
2. Department of Built Environment, College of Science and Technology, North Carolina A&T State University, Greensboro, NC 27411, USA
Abstract
As a short-chain PFAS (per- and polyfluoroalkyl substance), GenX was produced in recent years to replace traditional long-chain PFASs, such as perfluorooctanoic acid (PFOA). However, GenX turns out to be more toxic than people originally thought, posing health risks as a persistent environmental pollutant. In this research, for the first time, we incorporated chlorella, a single-celled green freshwater microalga that grows worldwide, with polyacrylonitrile (PAN) in equal amounts in electrospun nanofibers and studied the capability of the electrospun PAN/Algae bicomponent nanofibrous membrane (ES(PAN/Algae)) to bind and remove GenX from water. The incorporation of algae demonstrated a synergistic effect and significantly improved the GenX removal efficiency of the nanofibrous membrane. The maximum GenX removal capacity reached 0.9 mmol/g at pH 6, which is significantly higher than that of most of the reported GenX adsorbents as well as activated carbon. The GenX removal mechanism was investigated and discussed by using water contact angle, zeta potential, FTIR, and XPS techniques. This research demonstrated the potential to make highly efficient adsorbent/filter materials from common and economic materials to practically remediate short-chain PFASs from various water bodies.
Funder
National Science Foundation
Subject
General Materials Science,General Chemical Engineering
Reference31 articles.
1. Wexler, P. (2014). Encyclopedia of Toxicology, Academic Press. [3rd ed.].
2. Per- and polyfluoroalkyl substance toxicity and human health review: Current state of knowledge and strategies for informing future research;Fenton;Environ. Toxicol. Chem.,2012
3. Evidence of air dispersion: HFPO–DA and PFOA in Ohio and West Virginia surface water and soil near a fluoropolymer production facility;Galloway;Environ. Sci. Technol.,2020
4. Analysis of F-350B, Gen-X, ADONA, and emerging fluoroalkylether substances in environmental and biomonitoring samples: A review;Munoz;Trends Environ. Anal. Chem.,2019
5. Adverse maternal, fetal, and postnatal effects of hexafluoropropylene oxide dimer acid (GenX) from oral gestational exposure in sprague-dawley rats;Conley;Environ. Health Perspect.,2019
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