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Biochar accelerates organic matter degradation and enhances N mineralisation during composting of poultry manure without a relevant impact on gas emissions
- Source :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Publication Year :
- 2015
-
Abstract
- A composting study was performed to assess the impact of biochar addition to a mixture of poultry manure and barley straw. Two treatments: control (78% poultry manure + 22% barley straw, dry weight) and the same mixture amended with biochar (3% dry weight), were composted in duplicated windrows during 19 weeks. Typical monitoring parameters and gaseous emissions (CO2, CO, CH4, N2O and H2S) were evaluated during the process as well as the agronomical quality of the end-products. Biochar accelerated organic matter degradation and ammonium formation during the thermophilic phase and enhanced nitrification during the maturation phase. Our results suggest that biochar, as composting additive, improved the physical properties of the mixture by preventing the formation of clumps larger than 70 mm. It favoured microbiological activity without a relevant impact on N losses and gaseous emissions. It was estimated that biochar addition at 3% could reduce the composting time by 20%.<br />The authors wish to thank the Spanish Ministry of Economy and Competitiveness for supporting the research project Ref. AGL2012-40143-C02-01 under which this work was financed and ML Cayuela’s “Ramón y Cajal” research contract.
- Subjects :
- Environmental Engineering
Nitrogen
Nitrous Oxide
Bioengineering
Poultry
Slash-and-char
Soil
Dry weight
Biochar
Ammonium Compounds
Animals
Organic matter
Charcoal
Fertiliser
Waste Management and Disposal
Compost quality
chemistry.chemical_classification
Renewable Energy, Sustainability and the Environment
Temperature
Hordeum
General Medicine
Biodegradation
Straw
Carbon Dioxide
Pulp and paper industry
Refuse Disposal
Manure
Greenhouse gases
chemistry
Agronomy
visual_art
visual_art.visual_art_medium
Nitrification
Gases
Methane
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 192
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....35184c51f0424c7df931494b67ac9beb