Influence of inorganic additives on wheat straw composting: Characterization and structural composition of organic matter derived from the process
Date
Authors
BORIE BORIE, FERNANDO RICARDO
Medina, Jorge
Monreal, Carlos M.
Antilén, Mónica P.
Calabi-Floody, Marcela
Velasco-Molina, Marta
Meier, Sebastián
Borie, Fernando R.
Cornejo, Pablo E.
Knicker, Heike Elisabeth
Medina, Jorge
Monreal, Carlos M.
Antilén, Mónica P.
Calabi-Floody, Marcela
Velasco-Molina, Marta
Meier, Sebastián
Borie, Fernando R.
Cornejo, Pablo E.
Knicker, Heike Elisabeth
Authors
Date
Datos de publicación:
10.1016/j.jenvman.2020.110137
Keywords
Clay Minerals - Co-composting - Metallic Oxides - Waste Management - Wheat Straw - Cellulose - Iron Oxide - Lignin - Oxygen - Additives - Clay Minerals - Composting - Fourier Transform Infrared Spectroscopy - Gas Emissions - Greenhouse Gases - Iron Oxides - Soil Pollution - Soils - Waste Management - Allophanic Soil - Cocomposting - Compost Production - End-products - Greenhouse Gas Emission Reduction - Humic-like Substances - Inorganic Additives - Metallic Oxides - Structural Composition - Wheat Straws - Stabilization - Carbohydrate - Carbonyl Derivative - Cellulose - Iron Oxide - Lignin - Organic Matter - Oxygen - Polysaccharide - Uronic Acid - Acidity - Additive - Carbon Sequestration - Chemical Analysis - Clay Mineral - Compost - Composting - Contaminated Land - Detection Method - Greenhouse Gas - Humic Substance - Soil Pollution - Straw - Waste Management - Article - Carbon Nitrogen Ratio - Carbon Nuclear Magnetic Resonance - Chemical Composition - Chemical Structure - Elemental Analysis - Triticum Aestivum
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Abstract
Metallic oxides and clay minerals have gained increasing interest as additives of composting due to their influence in greenhouse gas emissions reduction and their effectivity in the stabilization of carbon both in compost and soils, leading to a cleaner compost production and potentially C sequestrant amendments. In this study, wheat straw (WS) was co-composted with iron oxide and allophanic soil and their influence on WS composting and composition of the end-products was evaluated. WS compost and their humic like-substances (HS) fraction were characterized by chemical and spectroscopic analyzes. After 126 days of process, the elemental composition showed slight differences of the N content for compost and HS, where the C/N atomic ratio tended to decrease relative to the initial material (WS; ~130). This trend was more pronounced in the HS from co-composted treatments (<30). The addition of inorganic materials increased the total acidity and phenolic-OH group contents (~15 and 14 mEq g?1 respectively, iron oxide treatment) relative to the treatment without inorganic additives. Nevertheless, the FTIR and solid-state 13CNMR spectroscopy barely support the wet chemical analysis and revealed a similar final composition between all the studied compost treatments. These results suggest that the incorporation of these materials as compost additives had no major effect on the spectroscopic features of the end-products, however, critical changes of the properties such as the extractability, functionality and composition of HS were revealed by traditional methods. In conclusion, the supply of metal oxides and clays could impact the aerobic composting of WS favorizing the stabilization of certain C pools and adsorptive properties of the end-products, that is of importance in production of amendments suitable for being used in degraded and contaminated soils. Nevertheless, under the experimental conditions of our research C stabilization apparently depends of other mechanisms that still need to be elucidate. © 2023 Elsevier B.V., All rights reserved.
Description
Keywords
Clay Minerals , Co-composting , Metallic Oxides , Waste Management , Wheat Straw , Cellulose , Iron Oxide , Lignin , Oxygen , Additives , Clay Minerals , Composting , Fourier Transform Infrared Spectroscopy , Gas Emissions , Greenhouse Gases , Iron Oxides , Soil Pollution , Soils , Waste Management , Allophanic Soil , Cocomposting , Compost Production , End-products , Greenhouse Gas Emission Reduction , Humic-like Substances , Inorganic Additives , Metallic Oxides , Structural Composition , Wheat Straws , Stabilization , Carbohydrate , Carbonyl Derivative , Cellulose , Iron Oxide , Lignin , Organic Matter , Oxygen , Polysaccharide , Uronic Acid , Acidity , Additive , Carbon Sequestration , Chemical Analysis , Clay Mineral , Compost , Composting , Contaminated Land , Detection Method , Greenhouse Gas , Humic Substance , Soil Pollution , Straw , Waste Management , Article , Carbon Nitrogen Ratio , Carbon Nuclear Magnetic Resonance , Chemical Composition , Chemical Structure , Elemental Analysis , Triticum Aestivum
Citation
10.1016/j.jenvman.2020.110137