Humic substances developed during organic waste composting: Formation mechanisms, structural properties, and agronomic functions

2019 ◽  
Vol 662 ◽  
pp. 501-510 ◽  
Author(s):  
Xiao-xia Guo ◽  
Hong-tao Liu ◽  
Shu-biao Wu
Keyword(s):  
Humic Substances ◽  
Structural Properties ◽  
Organic Waste ◽  
Formation Mechanisms

scholarly journals Humic substances elemental composition of selected taiga and tundra soils from Russian European North-East

2017 ◽  
Vol 38 (2) ◽  
pp. 125-147 ◽  
Author(s):  
Evgeny Lodygin ◽  
Vasily Beznosikov ◽  
Evgeny Abakumov
Keyword(s):  
Organic Matter ◽  
Elemental Composition ◽  
Humic Substances ◽  
Humic Acids ◽  
Mineral Soil ◽  
Formation Mechanisms ◽  
Tundra Soils ◽  
North East ◽  
European North ◽  
Organic Matter Stabilization

Abstract Soils of Russian European North were investigated in terms of stability and quality of organic matter as well as in terms of soils organic matter elemental composi­tion. Therefore, soil humic acids (HAs), extracted from soils of different natural zones of Russian North-East were studied to characterize the degree of soil organic matter stabilization along a zonal gradient. HAs were extracted from soil of different zonal environments of the Komi Republic: south, middle and north taiga as well as south tundra. Data on elemental composition of humic acids and fulvic acids (FAs) extracted from different soil types were obtained to assess humus formation mechanisms in the soils of taiga and tundra of the European North-East of Russia. The specificity of HAs elemental composition are discussed in relation to environmental conditions. The higher moisture degree of taiga soils results in the higher H/C ratio in humic substances. This reflects the reduced microbiologic activity in Albeluvisols sods and subsequent conser­vation of carbohydrate and amino acid fragments in HAs. HAs of tundra soils, shows the H/C values decreasing within the depth of the soils, which reflects increasing of aromatic compounds in HA structure of mineral soil horizons. FAs were more oxidized and contains less carbon while compared with the HAs. Humic acids, extracted from soil of different polar and boreal environments differ in terms of elemental composition winch reflects the climatic and hydrological regimes of humification.

scholarly journals COMPOSTING MODEL WITH THE REUSE OF ORGANIC WASTE IN RURAL SCHOOLS

2021 ◽  
Vol 9 (11) ◽  
pp. 528-551
Author(s):  
Natália Cristina Bezerra de Alencar Simões ◽  
David Barbosa de Alencar ◽  
Alberto De Souza Bezerra ◽  
Manoel Henrique Reis Nascimento ◽  
Any Karoline Bezerra de Alencar Ferro ◽  
...  
Keyword(s):  
Humic Substances ◽  
Rural Area ◽  
Sustainable Management ◽  
Organic Waste ◽  
Mineral Nutrients ◽  
School Garden ◽  
Daily Consumption ◽  
School Year ◽  
And Behavior

School institutions become producers of organic waste as a result of the daily consumption of school meals offered to students during the school year. An alternative, so that this material is not incorrectly released into the environment, is the implementation of a composting model that will reuse organic waste, generating humus, which will serve as fertilizer for the implementation of a vegetable garden in the school in the rural area. This work aims to propose a composter model in a School in the Rural Area of Manaus for the reuse of organic waste, to develop a prototype of composter for the production of humic substances and mineral nutrients for the creation of gardens, to prepare the manual with guidelines for the correct and sustainable management of the composting plant and the school garden and implementing the garden system through the composting process using school organic waste. The work is a case study that proposes to implement a prototype of compost for the production of humic substances and mineral nutrients for the construction of a school garden. It is intended that the proposal raises the awareness of the school community for the correct management and reuse of solid waste generated by the school and arouse in students and teachers the interest in environmental education and behavior change for the preservation of the environment in which they live.

The application of photoinduced luminescence in research on humic substances of various origins

2009 ◽  
Vol 38 (3) ◽  
Author(s):  
Lilla Mielnik
Keyword(s):  
Humic Substances ◽  
Structural Properties ◽  
Humic Acids ◽  
Bottom Sediments ◽  
Water Body ◽  
Drainage Basins ◽  
Hydrochemical Parameters ◽  
Halogen Light ◽  
Preliminary Research

The application of photoinduced luminescence in research on humic substances of various originsThis paper discusses preliminary research on using photoinduced luminescence phenomena in determining the structural properties of humic acids extracted from the bottom sediments of two lakes. The lakes examined differ in the hydrochemical parameters of the water body, as well as in the drainage basins surrounding the lakes. Photoinduced luminescence of humic acids was induced with a halogen light of 1500 μmol m

scholarly journals Stabilizate from Autoclaved Municipal Solid Waste as a Source of Valuable Humic Substances in a Waste Circular Economy

2019 ◽  
Vol 11 (11) ◽  
pp. 6147-6157 ◽  
Author(s):  
Dorota Kulikowska ◽  
Katarzyna Bernat ◽  
Irena Wojnowska-Baryła ◽  
Barbara Klik ◽  
Sylwia Michałowska ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Organic Matter ◽  
Humic Substances ◽  
Circular Economy ◽  
Organic Waste ◽  
Treatment Plant ◽  
Process Waste ◽  
Municipal Waste Management ◽  
Aerobic Stabilization ◽  
Stage System

Abstract One of the solutions in unsorted municipal waste management is autoclaving, which maximize the amount of waste for recycling. After autoclaving, however, up to 30% of autoclaved waste, called organic remaining fraction (ORF) is still unstabilized and cannot be landfilled but must be subjected for further stabilization, e.g. in aerobic conditions. After this process waste meets standards for landfilling. However, as during aerobic stabilization humification of organic matter proceed, before landfilling humic substances (HS) could be recovered. High HS concentration in ORF means that before its landfilling HS can be recovered. The maximal recovering of valuable substances from waste is in line with the principles of sustainable development. Therefore, this study examined the humification of ORF from a full-scale mechanical-heat-treatment plant during composting in two-stage system (1st stage in 550 L reactor, 2nd stage in windrow). The rates of organics mineralization were 8.35–12.00 g OM/kg d.m. d. The rates of HS formation were lower, 3.31–3.92 mg/g OM d, and process proceeded most intensively up to 50 days. The maximum HS concentrations were 82–120 mg/g OM, similar to those in composts from different kinds of organic waste. Graphic Abstract

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