Effects of composting technologies on the chemical and physicochemical properties of humic acids
作者： Paola Campitelli , Silvia Ceppi
DOI: 10.1016/J.GEODERMA.2007.12.003
关键词: Soil organic matter 、 Vermicompost 、 Humic acid 、 Organic matter 、 Compost 、 Cation-exchange capacity 、 Environmental chemistry 、 Chemistry 、 Humus 、 Soil fertility
摘要: Composting and vermicomposting processes are useful methods for producing a stabilized mature organic material; rich in humic substances, which may change some properties the soil solution. Through both final products matter, acids (HA), main more stable component of contribute to essential functions global fertility health. The quality assessment compost and/or vermicompost is not always sufficiently clear; many researchers still exploring different methodologies, particular from point view their nutrient microbial activities. In recent times, amount chemical physicochemical HA considered as important indicator biological maturity stability warranty safe impact successful performance soil. Humic acid (HA) samples used were isolated composted, vermicomposted materials soil. Their studied through analytical techniques, elemental functional group composition, FT-IR potentiometric titrations. The aim this research was report comparison, view, between extracted matter obtained composting native HA. According results, derived less evolved (compost vermicompost) showed humification levels (higher than vermicomosting process), higher aliphatic nature, nitrogen compounds content, lower oxidation degree, charge development, differences acidity strength acidic groups heterogeneity those (soil). The composted stronger former have similar comparison with HA. The contribution buffer capacity cation exchange (CEC) seems be larger treatments. These data very technologies, can an instrument predicting maturity, (CEC, capacity, among others) amendment, way, it could agronomic
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