Effect of humic acid (HA) on sulfonamide sorption by biochars

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Fei Lian
  • Binbin Sun
  • Lingyan Zhu
  • Zhongqi Liu
  • Baoshan Xing

Detail(s)

Original languageEnglish
Pages (from-to)306-312
Journal / PublicationEnvironmental Pollution
Volume204
Publication statusPublished - 1 Sept 2015
Externally publishedYes

Abstract

Effect of quantity and fractionation of loaded humic acid (HA) on biochar sorption for sulfonamides was investigated. The HA was applied in two different modes, i.e. pre-coating and co-introduction with sorbate. In pre-coating mode, the polar fractions of HA tended to interact with low-temperature biochars via H-bonding, while the hydrophobic fractions were likely to be adsorbed by high-temperature biochars through hydrophobic and π-π interactions, leading to different composition and structure of the HA adlayers. The influences of HA fractionation on biochar sorption for sulfonamides varied significantly, depending on the nature of interaction between HA fraction and sorbate. Meanwhile, co-introduction of HA with sulfonamides revealed that the effect of HA on sulfonamide sorption was also dependent on HA concentration. These findings suggest that the amount and fractionation of adsorbed HA are tailored by the surface properties of underlying biochars, which differently affect the sorption for organic contaminants. © 2015 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Biochar, Fractionation, Humic acid, Sorption, Sulfonamide

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

Effect of humic acid (HA) on sulfonamide sorption by biochars. / Lian, Fei; Sun, Binbin; Chen, Xi et al.
In: Environmental Pollution, Vol. 204, 01.09.2015, p. 306-312.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review