Next Article in Journal
Improvement of Hargreaves–Samani Reference Evapotranspiration Estimates with Local Calibration
Previous Article in Journal
Evaluation of Partial Nitritation/Anammox (PN/A) Process Performance and Microorganisms Community Composition under Different C/N Ratio
Previous Article in Special Issue
Filtration of Uncharged Solutes: An Assessment of Steric Effect by Transport and Adsorption Modelling
Open AccessArticle

Pyrolysis Process as a Sustainable Management Option of Poultry Manure: Characterization of the Derived Biochars and Assessment of their Nutrient Release Capacities

1
Wastewaters and Environment Laboratory, Water Research and Technologies Center, P.O. Box 273, Soliman 8020, Tunisia
2
National Agricultural Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia
3
Center for Environmental Studies and Research, Sultan Qaboos University, P.O. Box 31, Al-Khoud 123, Muscat, Oman
4
Department of Chemical Sciences, Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
5
CNRS, IS2M UMR 7361, University of Haute-Alsace, University of Strasbourg, F-68100 Mulhouse, France
6
Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O. Box 2713 Doha, Qatar
*
Author to whom correspondence should be addressed.
Water 2019, 11(11), 2271; https://doi.org/10.3390/w11112271
Received: 10 September 2019 / Revised: 25 October 2019 / Accepted: 28 October 2019 / Published: 30 October 2019
(This article belongs to the Special Issue Wastewater Treatment, Valorization and Reuse)
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−1 for RPM to only 3.8 and more than 43.3 mg g−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. View Full-Text
Keywords: raw poultry manure; pyrolysis; biochar; characterization; leaching; phosphorus; potassium raw poultry manure; pyrolysis; biochar; characterization; leaching; phosphorus; potassium
Show Figures

Figure 1

MDPI and ACS Style

Hadroug, S.; Jellali, S.; Leahy, J.J.; Kwapinska, M.; Jeguirim, M.; Hamdi, H.; Kwapinski, W. Pyrolysis Process as a Sustainable Management Option of Poultry Manure: Characterization of the Derived Biochars and Assessment of their Nutrient Release Capacities. Water 2019, 11, 2271.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop