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- Title
THE RELATIONSHIP BETWEEN THE SPECTROSCOPIC CHARACTERISTICS OF HUMIC ACID IN SLUDGE COMPOST AND ITS ELECTRON TRANSFER ABILITY.
- Authors
ZHANG, Z. L.; XIAO, Y.; CHEN, Z.
- Abstract
Aerobic composting is the process of humification of organic matter, which produces a large amount of humus, and humic acid (HA) is one of the main components of humus. Ultraviolet-visible, infrared, and three-dimensional fluorescence spectroscopic techniques, combined with electrochemical methods, have been used to explore the changes in the structure and electron transfer ability of HA, which provide scientific evidence that compost products enter the soil. The results showed that during the first stage of fermentation, the polysaccharides, proteins, fats, and lignin in the HA are continuously decomposed, and that the degradation rates of the humus-like substances are greater than their generation rates, resulting in a decrease in their electron transfer capacity. Later, as the content of humus-like substances in the organic matter of HA increased, the content of aromatic substances such as quinones and phenols increased, and the degree of aromatization, humification, and stabilization increased, humification can accelerate the formation of redox-active substances in composting, and ultimately lead to the enhancement of electron transfer capacity.
- Subjects
SLUDGE composting; CHARGE exchange; HUMIC acid; QUINONE; ORGANIC compounds; HUMIFICATION
- Publication
Applied Ecology & Environmental Research, 2023, Vol 21, Issue 3, p2201
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/2103_22012212