Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
Online ISSN : 2185-6648
ISSN-L : 2185-6648
Journal of Environmental Engineering Research, Vol.52
Characteristics of NOM released from soil under different pH conditions: physicochemical properties and activated carbon adsorbability
Hongjie GUIHaixia DUFusheng LIYongfen WEIToshiro YAMADA
Author information
JOURNAL FREE ACCESS

2015 Volume 71 Issue 7 Pages III_315-III_322

Details
Abstract
 The characteristics of natural organic matter (NOM) released from a representative forest soil under acidic, neutral and basic conditions were investigated based on their physicochemical properties and activated carbon adsorbability. For physicochemical properties, it was found that as the releasing condition changed from acidic to basic, NOM components possessing larger UV absorbing capability and larger molecular weight were released into water. The DOC concentration of NOM released under basic condition was tens of times larger than that under either acidic or neutral condition. On the other hand, based on the batch adsorption experiments and isotherm data analysis with a modified Freundlich isotherm model, the differences in the adsorbability of the released NOM were also demonstrated. Compared to the NOM released under either neutral or basic condition, the NOM released under acidic condition was less adsorbable, and NOM components with larger molecular weight seemed to be more preferentially adsorbed.
Content from these authors
© 2015 Japan Society of Civil Engineers
Previous article Next article
feedback
Top