N-MODIFIED ORGANIC MATTER FOR SOIL IMPROVEMENT: STATE OF RESEARCH ON NITROGEN BINDING IN AMMONOXIDISED LIGNINS
Oxidative ammonolysis of lignin under mild conditions is considered to be a suitable reaction to mimic the natural humification process. The products obtained can potentially be used as soil-improving materials as they share structural similarities with stable terrestrial humic substances. In addition they release nitrogen slowly to the soil over a long term. Based on studies using model compounds we have acquired clear evidence that the majority of nitrogen in natural and artificial humic substances - the latter obtained by ammonoxidation of ligneous substrates - is bound in similar structural moieties. Furthermore, the results obtained strongly support the idea of the formation of low molecular phenolic and quinoid intermediates for both natural humification and ammonoxidation of ligneous matter.
ammonoxidation lignin N-modified lignin soil improvement humic substances
G. Pour L. Tyhoda E. Brendler A. Potthast T. Rosenau F. Liebner
Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190,Vie Department of Forest and Wood Science, University of Stellenbosch, Bosnian Street, Stellenbosch, 760 TV Bergakademie Freiberg, Institute of Analytical Chemistry, Leipziger Strafie 29, D-09599 Freiberg,
国际会议
16th International Symposium on Wood,Fiber and Pulping Chemistry(第十六届木材、纤维及制浆化学国际会议)
天津
英文
174-177
2011-06-08（万方平台首次上网日期，不代表论文的发表时间）