Cited by 182Per- and polyfluoroalkyl substances researchEnvironmental Chemistry and AnalysisAdsorption and biosorption for pollutant removal

Sorption of short- and long-chain perfluoroalkyl surfactants on sewage sludges

Zhang, Chaojie, Yan, Hong, Li, Fei, Hu, Xiang, Zhou, Qi·2013·Journal of Hazardous Materials

Abstract

Perfluoroalkyl surfactants (PASs) have attracted increasing concerns in recent years due to their global distribution, persistence, bioaccumulation and potential toxicity. Since sludge was a significant source of PASs to environment, the sorption of short (C2-C6) and long-chain (C7-C15) PASs on different sewage sludge was investigated in this study. The equilibrium data were well represented by the Freundlich isotherm and were generally nonlinear. In order to elucidate the sorption mechanism of PASs to sludge, effect of sludge property, solution chemistry and molecular structure were also investigated in details. The dominant sludge parameter influencing sorption of PASs was protein in extracellular polymeric substances. The sorption of PASs onto sludge increased as solution pH decreased. For all the PASs homologues, enhanced adsorption occurred with increasing calcium concentration in solution. For PASs with C5-C15, sorption on sludge increases with increasing alkyl chain length, while for PASs with C2-C5, the association of sludge decreases when the alkyl chain length increases. The perfluorinated sulfonic acid (PFSA) demonstrated substantially stronger sorption than perfluorinated carboxylic acid (PFCA) analog. Evidence for both hydrophobic and electrostatic interactions was found.

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Crossref · 10.1016/j.jhazmat.2013.06.022

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Authors
Zhang, C., Yan, H., Li, F., Hu, X., & Zhou, Q.
Affiliations
Tongji University (CN)
Corresponding author
  • Zhang, Chaojie
  • Li, Fei
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2013-09
Volume
260
Pages
689-699
ISSN
0304-3894 (ISSN-L)
OpenAlex
W2079387648
Cited by
182
References
32
Citations by year
2026: 14 · 2025: 26 · 2024: 25 · 2023: 30 · 2022: 27 · 2021: 15 · 2020: 5 · 2019: 7 · 2018: 9 · 2017: 4 · 2016: 9 · 2015: 4 · 2014: 7
FWCI
5.32
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation of China (21177094, 41271465, 51108197)
  • State Key Laboratory of Pollution Control and Resource Reuse (PCRRK09004)
  • Fundamental Research Funds for the Central Universities (040021211)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Environmental Science › Environmental Chemistry › Environmental Chemistry and Analysis
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
Keywords
sewage sludge, sorption, Freundlich isotherm, extracellular polymeric substances, protein content, pH effect, calcium, alkyl chain length, perfluorinated sulfonic acids, hydrophobic interactions, electrostatic interactions, sludge dewatering
MeSH terms
Adsorption, Calcium, Carbohydrates, Carbon, Carboxylic Acids, China, Hydrogen-Ion Concentration, Kinetics, Sewage, Sodium, Surface-Active Agents, Temperature, Time Factors, Waste Disposal, Fluid, Water Pollutants, Chemical, Water Purification, Static Electricity, Wastewater

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