1070-4272/01/7410-1774 $25.00 C 2001 MAIK [Nauka/Interperiodica]
Russian Journal of Applied Chemistry, Vol. 74, No. 10, 2001, pp. 1774!1776. Translated from Zhurnal Prikladnoi Khimii, Vol. 74, No. 10, 2001,
Original Russian Text Copyright + 2001 by Efanov, Galochkin, Schott, Dudkin, Klepikov.
Nitrogen-Containing Organomineral Fertilizer
Based on Wood Waste
M. V. Efanov, A. I. Galochkin, P. R. Schott, D. V. Dudkin, and A. G. Klepikov
Altai State University, Barnaul, Russia
Received December 7, 2000; in final form, May 2001
Abstract-A new nitrogen-containing fertilizer was obtained by oxidative ammonolyis from wood waste.
The chemical composition of the fertilizer was studied by functional chemical analysis. The fertilizer was
tested in field conditions.
Recently, researchers’ attention has been focused
on methods for preparing new types of inexpensive or-
ganic fertilizers. Among raw materials suitable for this
purpose are industrial lignin [1, 2] and lingo-carbo-
hydrate materials, including wood-waste-based com-
posts [3, 4].
As known, slow microbiological degradation of
lignin from plant residues yields organic products
exerting a physiological effect on plants . Kodina
and Aleksandrova showed  that, when considering
decay in soil of organic substances from wood, lignin
can be regarded as a starting material for production
of humic acids forming the base of soil humus.
Soil-microflora-induced humification of lignin in-
volves oxidation (demethoxylation), which yields
polyphenol compounds, followed by condensation and
oxidation processes giving humic (biologically active)
substances responsible for soil fertility .
However, the natural microbiological degradation
of lignin, yielding physiologically active humic sub-
stances, is a rather protracted process taking several
years. It can be accelerated by oxidative degradation
of lignin to produce physiologically active groups
in its structure. Such functional groups include, in
the first place, those containing nitrogen in a bound,
slowly assimilable form, produced in oxidative am-
monolysis of lignin molecules.
The authors of  developed various procedures
for preparing slowly assimilable nitrogen-containing
fertilizers by oxidative ammonolysis of lignins under
the action of oxygen in an ammonia medium in severe
conditions (1203180oC, 5350 atm). The main draw-
backs of the oxoammonolysis methods proposed are
low yields of products and the complexity and long
duration of the technological process. Zakis et al. 
proposed that, for oxidative fixation of nitrogen, lig-
nin should be oxidized with an ammonia solution of
ammonium peroxodisulfate at 20oC . However, this
method also has major disadvantages, namely, dura-
tion of over 100 h and large amount of nitrogen-con-
taining reactants consumed.
The aim of this study was to prepare new nitrogen-
containing fertilizers by oxidation of lingo-carbohy-
drate materials (LCM, aspen wood) with an ammonia
solution of ammonium peroxodisulfate and to analyze
their properties. With LCM as the starting material for
preparing the fertilizers, it is possible to significantly
expand the range of raw materials and to make the
process less expensive .
The LCM-based nitrogen-containing fertilizers were
prepared as follows. Air-dry chips (1.031.5-cm frac-
tion) with weight of 1.5 kg were treated with a so-
lution of ammonium peroxodisulfate (0.1 kg per kg of
wood) in a 25% aqueous ammonia solution (liquid-to-
solid ratio 10) at 1203130oC for 1 h in an autoclave
under pressure of 2.5 atm. The resulting product was
washed with water until negative reaction for the sul-
fate ion and dried in air to constant weight.
The nitrogen content was determined by the Kjel-
dahl semimicromethod , and the amount of COOH
groups, by conductometric titration . Oxidation
of LCM with oxygen (0.05 g per g of wood) for 1 h
in the presence of NH
(10.0 g per g of wood) yielded
an ammonized product containing 10.9% organical-