Journal of Ecology and Rural Environment ›› 2015, Vol. 31 ›› Issue (1): 106-111.doi: 10.11934/j.issn.1673-4831.2015.01.016

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Enrichment of Ammonia-Nitrogen by Different Organo–Mineral Complexes in Humus

REN  Zi-Hang, MA  Xiu-Lan, WANG  Er-Li, LI  Meng-Yuan   

  1. Resource and Environmental College,Jilin Agricultural University
  • Received:2014-06-17 Revised:2014-12-30 Online:2015-01-25 Published:2015-04-15
  • Contact: WANG Er-Li College of Environmental Science and Engineering,Liaoning Technical University

Abstract: In order to explore effects of different humus components on loss of adsorptive ammonia-nitrogen, characteristics of the enrichment of ammonia-nitrogen by different organo–mineral complexes, components of humus were investigated through a batch experiment of equilibrium adsorption. Results indicate that in terms of ammonia-nitrogenenrichment coefficient, the organo-kaolinite complexes in humus displayed an order of humic acid–Kaolinite > humin–Kaolinite > fulvic acid –Kaolinite, being 1.26, 1.14 and 1.01, respectively; and the organo-Montmorillonite complexes did an order of humic acid–Montmorillonite > humin–Montmorillonite > fulvic acid–Montmorillonite, being 1.22, 1.13 and 1.03, respectively. The adsorption of filling of ammonia-nitrogen into pores existing in the glassy colloids cementing humic acids and humin, rated as hard carbon, is the major cause leading to higher ammonia-nitrogen enrichment coefficient of humic and fulvic acids-mineral complexes.

Key words: humus component, organo–mineral complex, ammonia-nitrogen, sorption capacity, enrichment coefficient

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