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Cited by 329

The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.

Fast and Slow Rates of Naphthalene Sorption to Biochars Produced at Different Temperatures

Chen, Zaiming, Chen, Baoliang, Chiou, Cary T.·2012·Environmental Science & Technology

Abstract

This study investigated the sorption kinetics of a model solute (naphthalene) with a series of biochars prepared from a pine wood at 150-700 °C (referred as PW100-PW700) to probe the effect of the degree of carbonization of a biochar. The samples were characterized by the elemental compositions, thermal gravimetric analyses, Fourier transform IR spectroscopy, scanning electron microscopy, Brunauer-Emmett-Teller-N(2) surface areas (SA), and pore size distributions. Naphthalene exhibited a fast rate of sorption to PW150 owning a high oxygen content and a small SA, due supposedly to the solute partition into a swollen well-hydrated uncarbonized organic matter of PW150. The partial removal of polar-group contents in PW250/PW350, which increased the compactness of the partition medium, decreased the diffusion of the solute into the partition phase to result in a slow sorption rate. With PW500 and PW700 displaying low oxygen contents and high SA, the solute sorption rates were fast, attributed to the near exhaustion of a partition phase in the sample and to the fast solute adsorption on the carbonized biochar component. The results illustrate that the sorption rate of a solute with biochars is controlled largely by the solute's diffusivity in the biochar's partition phase, in which the medium compactness affects directly the solute diffusivity.

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Metadata

Authors
Chen, Z., Chen, B., & Chiou, C. T.
Venue
Environmental Science & Technology
Published
2012-09-26
Volume
46
Issue
20
Pages
11104-11111
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2013118853
Cited by
329
References
27
FWCI
13.08
Type
journal article
Language
en
Open access
closed

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