Cited by 435Adsorption and biosorption for pollutant removalMicrobial bioremediation and biosurfactantsEnvironmental remediation with nanomaterials

Effects of chemical, biological, and physical aging As well As soil addition on the sorption of pyrene to activated carbon and biochar

Hale, SarahE., Hanley, Kelly, Lehmann, Johannes, Zimmerman, AndrewR., Cornelissen, Gerard·2011·Environmental Science & Technology

Abstract

In this study, the suitability of biochar and activated carbon (AC) for contaminated soil remediation is investigated by determining the sorption of pyrene to both materials in the presence and absence of soil and before as well as after aging. Biochar and AC were aged either alone or mixed with soil via exposure to (a) nutrients and microorganisms (biological), (b) 60 and 110 °C (chemical), and (c) freeze-thaw cycles (physical). Before and after aging, the pH, elemental composition, cation exchange capacity (CEC), microporous SA, and sorption isotherms of pyrene were quantified. Aging at 110 °C altered the physicochemical properties of all materials to the greatest extent (for example, pH increased by up to three units and CEC by up to 50% for biochar). Logarithmic K(Fr) values ranged from 7.80 to 8.21 (ng kg(-1))(ng L(-1))(-nF) for AC and 5.22 to 6.21 (ng kg(-1))(ng L(-1))(-nF) for biochar after the various aging regimes. Grinding biochar to a smaller particle size did not significantly affect the sorption of d(10) pyrene, implying that sorption processes operate on the subparticle scale. Chemical aging decreased the sorption of pyrene to the greatest extent (up to 1.8 log unit for the biochar+soil). The sorption to AC was affected more by the presence of soil than the sorption to biochar was. Our results suggest that AC and biochar have a high sorption capacity for pyrene that is maintained both in the presence of soil and during harsh aging. Both materials could therefore…

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Crossref · 10.1021/es202970x

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Authors
Hale, S., Hanley, K., Lehmann, J., Zimmerman, A., & Cornelissen, G.
Affiliations
  • Department of Environmental Engineering, Norwegian Geotechnical Institute (NGI), P.O. Box 3930, Ullevål Stadion, N-0806, Oslo, Norway
  • Cornell University (US)
  • Department of Geological Sciences, University of Florida, 241 Williamson Hall, P.O. Box 112120, Gainesville, Florida 32611, United States
  • Norwegian Geotechnical Institute (NO)
Venue
Environmental Science & Technology
Published
2011-11-28
Volume
45
Issue
24
Pages
10445-10453
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2051082673
Cited by
435
References
54
Citations by year
2026: 15 · 2025: 20 · 2024: 27 · 2023: 36 · 2022: 37 · 2021: 31 · 2020: 28 · 2019: 37 · 2018: 38 · 2017: 46 · 2016: 34 · 2015: 30 · 2014: 25 · 2013: 19 · 2012: 11
FWCI
17.38
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Environmental Protection Agency
  • Norges Forskningsråd
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Pollution › Microbial bioremediation and biosurfactants
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
activated carbon, biochar, aging materials, chemical aging, biological aging, freeze-thaw cycles, soil remediation, Freundlich isotherm, cation exchange capacity, particle size effects, polycyclic aromatic hydrocarbons
MeSH terms
Adsorption, Charcoal, Polycyclic Aromatic Hydrocarbons, Pyrenes, Soil, Soil Microbiology, Soil Pollutants, Environmental Restoration and Remediation

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