Effects of LMWOAs of Iris Pseudacorus L. Rhizosphere on Ammonia Nitrogen Adsorption of Soil

被引：1
|
作者：
Li H.-B. [1 ]
Zhao X.-M. [1 ]
Li Y.-H. [1 ]
Chen X. [1 ]
机构：
[1] School of Resources & Civil Engineering, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2020年 / 41卷 / 02期
关键词：
Ammonia nitrogen adsorption; Iris Pseudacorus L; Low molecular weight organic acid; Rhizosphere metabolites; Soil regulation;
D O I：
10.12068/j.issn.1005-3026.2020.02.021
中图分类号：
学科分类号：
摘要：
Low molecular weight organic acid(LMWOA) of rhizosphere is a kind of active allelochemical, which has such important ecological functions as promoting the migration, transformation and accumulation of pollutants. The GC-MS technology was applied to analyze the composition characteristics and relative content of the rhizosphere metabolites of Iris Pseudacorus L.. The simulation experiments were carried out to reveal the thermo-dynamic effects of the LMWOA on the soil adsorption of ammonia nitrogen. The results showed that different types of LMWOAs could promote the adsorption of ammonia nitrogen, but the degree of action is different. The adsorption kinetics of ammonia nitrogen of soil matches the Elovich equation and the double constant equation, and the isothermal adsorption complies with the characteristics of the Langmuir and Freundlich equations. Its bond energy constant KL is significantly correlated with the organic acid dissociation constant pKa, and the mechanism of LMWOA regulation of soil adsorption of ammonia nitrogen is mainly the activation of organic matters. © 2020, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码：269 / 274
页数：5
相关论文
共 11 条
  • [1] Hayakawa C., Fujii K., Funakawa S., Et al., Effects of sorption on biodegradation of low-molecular-weight organic acids in highly-weathered tropical soils, Geoderma, 324, pp. 109-118, (2018)
  • [2] Bjarne W.S., Influence of vegetation on low-molecular-weight carboxylic acids in soil solution-a review, Geoderma, 99, 3-4, pp. 169-198, (2001)
  • [3] Rugova A., Puschenreiter M., Koellensperger G., Et al., Elucidating rhizosphere processes by mass spectrometry-a review, Analytica Chimica Acta, 956, pp. 1-13, (2017)
  • [4] Yu Y.-H., Li Q.-M., Zhang T.-L., Et al., Adsorption kinetics of low molecular weight organic acids in red soils, Journal of Soil Science, 48, 1, pp. 202-206, (2011)
  • [5] Ji X.-C., Li H.-B., Yu Y.-Y., Et al., Adsorption behavior of ammonia nitrogen in the sediment of ditches after reclaiming water from rice fields in Hekou district, Chinese Agricultural Science Bulletin, 31, 32, pp. 148-153, (2015)
  • [6] Zhao Z., Li Q.Y., Chen L.S., Effect of rhizosphere dispersal and impulsive input on the growth of wetland plant, Mathematics and Computers in Simulation, 152, pp. 69-80, (2018)
  • [7] Luo Q., Sun L.N., Hu X.M., Et al., The variation of root exudates from the hyperaccumulator sedum alfredii under cadmium stress: metabonomics analysis, PloS One, 9, 12, pp. 1-16, (2014)
  • [8] Shen Y.-Y., Behavioral characteristics and rhizosphere restoration of petroleum pollutants in soil, (2012)
  • [9] Wei X.M., Zhu Z.K., Wei L., Et al., Biogeochemical cycles of key elements in the paddy-rice rhizosphere: microbial mechanisms and coupling processes, Rhizosphere, 10, pp. 1-10, (2019)
  • [10] Chen H.X., Dou J.F., Xu H.B., The effect of low-molecular-weight organic-acids(LMWOAs) on treatment of chromium-contaminated soils by compost-phytoremediation: kinetics of the chromium release and fractionation, Journal of Environmental Sciences, 70, pp. 45-53, (2018)
12