Pyrolysis Process as a Sustainable Management Option of Poultry Manure: Characterization of the Derived Biochars and Assessment of their Nutrient Release Capacities
| Autor: | James J. Leahy, Mejdi Jeguirim, Marzena Kwapinska, Witold Kwapinski, Helmi Hamdi, Samar Hadroug, Salah Jellali |
|---|---|
| Přispěvatelé: | Tunisian Ministry of Higher Education and Scientific Research (MHESR). |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:Hydraulic engineering
raw poultrymanure 020209 energy Potassium Geography Planning and Development chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry lcsh:Water supply for domestic and industrial purposes Nutrient lcsh:TC1-978 Biochar 0202 electrical engineering electronic engineering information engineering biochar characterization phosphorus Leaching (agriculture) 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 raw poultry manure potassium Phosphorus pyrolysis equipment and supplies Pulp and paper industry leaching chemistry Scientific method Poultry manure Pyrolysis |
| Zdroj: | Water Volume 11 Issue 11 Water, Vol 11, Iss 11, p 2271 (2019) |
| ISSN: | 2073-4441 |
| Popis: | Raw poultry manure (RPM) and its derived biochars at temperatures of 400 (B400) and 600 ° C (B600) were physico-chemically characterized, and their ability to release nutrients was assessed under static conditions. The experimental results showed that RPM pyrolysis operation significantly affects its morphology, surface charges, and area, as well as its functional groups contents, which in turn influences its nutrient release ability. The batch experiments indicated that nutrient release from the RPM as well as biochars attains a pseudo-equilibrium state after a contact time of about 48 h. RPM pyrolysis increased phosphorus stability in residual biochars and, in contrast, transformed potassium to a more leachable form. For instance, at this contact time, P- and K-released amounts passed from 5.1 and 25.6 mg g&minus 1 for RPM to only 3.8 and more than 43.3 mg g&minus 1 for B400, respectively. On the other hand, six successive leaching batch experiments with a duration of 48 h each showed that P and K release from the produced biochars was a very slow process since negligible amounts continued to be released even after a total duration of 12 days. All these results suggest that RPM-derived biochars have specific physico-chemical characteristics allowing them to be used in agriculture as low-cost and slow-release fertilizers. |
| Databáze: | OpenAIRE |
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