Journal ArticleDOI
Application of pyrolysis-gas chromatography to the study of the composting process of barley straw and pear-tree wood
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In this article, the transformation of organic matter during the composting process of ground barley straw and pear-tree wood was studied, and several parameters, such as the diversity index and pyrolysis ratios, were used to study the changes in the pyrograms during the process.About:
This article is published in Journal of Analytical and Applied Pyrolysis.The article was published on 1985-04-01. It has received 28 citations till now. The article focuses on the topics: Compost & Straw.read more
Citations
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Journal ArticleDOI
Composted materials as organic fertilizers
TL;DR: In this paper, a review paper is presented on input, transformation and loss of native and added organic matter in soil and on principal effects of fresh organic matter addition on soil properties.
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Removal of Natural Organic Matter by Coagulation-Flocculation: A Pyrolysis-GC-MS Study
TL;DR: In this article, the removal of the natural organic matter (NOM) in the Seine river water sampled at Le Pecq (France) was carried out by using three coagulants: ferric chloride, aluminum sulfate, and aluminum polychlorosulfate (PACS).
Journal ArticleDOI
Pyrolytic study of compost and waste organic matter
TL;DR: In this article, the chemical composition of organic matter (OM) in various fresh and composted wastes was characterized using pyrolysis-GC/MS, and the results showed that most cellulose-related structures originating from paper and cardboard were degraded after four months of composting.
Journal ArticleDOI
Biochemical and chemical-structural characterization of different organic materials used as manures
TL;DR: In this paper, a comparison between two municipal wastes of differing degrees of maturity (one fresh and the other composted) and a variety of organic materials (manure, leonardite and commercial HA) was made.
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Assessment of three vermicomposts as organic amendments used to enhance diuron sorption in soils with low organic carbon content
TL;DR: In this paper, vermicomposts from the wine and distillery industry containing spent grape marc (V1), biosolid vinasse (V2), and alperujo (V3) from the olive-oil industry were investigated as organic amendments to a sandy and a clay soil with low organic carbon (OC) contents (≤1%).
References
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Journal ArticleDOI
Comparison of the structures of humic substances from aquatic and terrestrial sources by pyrolysis gas chromatography-mass spectrometry
TL;DR: In this paper, four humic extracts isolated from terrestrial, mahne, plankton and freshwater sources have been investigated by pyrolysis-gas chromatography-mass spectrometry.
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The effect of organic nitrogen supplement on the utilization of different sources of detritus1
TL;DR: In this paper, a particulate organic nitrogen supplement was added to two detrital materials (red macroalga Grnciluriu j’o2iiJeru and marsh grass Spurtinu ulternijloru) and its effect on their utilization by the polychaete Cupitellu cupitutu was investigated with isotope tracer techniques.
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Polycarboxylic acids as the origin of some pyrolysis products characteristics of soil organic matter
TL;DR: Curie-point pyrolysis has been shown to yield 2-cyclopenten-1-one and 2,3-dimethylmaleic anhydride as discussed by the authors.
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A pyrolysis‐gas chromatography method for discrimination of soil humus types
J. M. Bracewell,G. W. Robertson +1 more
TL;DR: In this article, the principles governing the choice of a pyrolysis-gas chromatography method for work on soils and organic macromolecules are reviewed, and the method is applied to the discrimination of mull and mor humus in freely drained soils.
Journal ArticleDOI
Composition and decomposition of roots of ryegrass and red clover
Abstract: Red clover roots contained much more lignin and pectin, slightly more cellulose, and less hemicellulose than roots of perennial ryegrass, when these components were expressed as a proportion of organic matter. Much smaller amounts of p-hydroxybenzoic, p-coumaric and ferulic acids were released from the roots of red clover by NaOH, than from perennial ryegrass. Roots of both species were incubated with soil for up to 33 weeks, under both well-aerated and waterlogged conditions, and changes in the composition of the organic matter of the light fraction were examined. In general, the proportions of lignin increased and pectin decreased, and there was some tendency for hemicellulose to increase and cellulose to decrease. N, S and P in the organic matter of the light fraction decreased initially and then increased to reach, after 33 weeks, values greater than those in the roots. Whether the soil was well-aerated or waterlogged had little effect on these changes. Incubation with red clover roots increased considerably the amounts of p-hydroxybenzaldehyde, p-hydroxybenzoic acid, vanillin and syringic acid extracted from the soil (after removal of the light fraction) by a buffer solution of pH 8.4. Incubation with ryegrass roots increased the amounts of p-hydroxybenzaldehyde, p-hydroxybenzoic acid and syringic acid extracted by the buffer solution. The effects of incubation with roots on the amounts of phenolic compounds extracted by NaOH were particularly marked with ryegrass: p-hydroxybenzaldehyde, p-hydroxybenzoic acid and ferulic acid were greatly increased, and p-coumaric acid was increased to a smaller extent.
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Quantitative comparison of the nitrogen-containing pyrolysis products and amino acid composition of soil humic acids
J.M. Bracewell,G.W. Robertson +1 more