TY - JOUR
T1 - Static and dynamic investigations on leaching/retention of nutrients from raw poultry manure biochars and amended agricultural soil
AU - Hadroug, Samar
AU - Jellali, Salah
AU - Jeguirim, Mejdi
AU - Kwapinska, Marzena
AU - Hamdi, Helmi
AU - Leahy, James J.
AU - Kwapinski, Witold
N1 - Funding Information:
Funding: This research was funded by the TUNISIAN MINISTRY OF HIGHER EDUCATION AND SCIENTIFIC RESEARCH and ERASMUS+ International Credit Mobility Program.
Funding Information:
Acknowledgments: This research work was carried out within the framework of an ERASMUS+ International Credit Mobility Program between CERTE (Tunisia) and UL (Ireland). The authors gratefully thank this program and also the Tunisian Ministry of Higher Education and Scientific Research for financing this work.
Funding Information:
This research was funded by the TUNISIAN MINISTRY OF HIGHER EDUCATION AND SCIENTIFIC RESEARCH and ERASMUS+ International Credit Mobility Program. This research work was carried out within the framework of an ERASMUS+ International Credit Mobility Program between CERTE (Tunisia) and UL (Ireland). The authors gratefully thank this program and also the Tunisian Ministry of Higher Education and Scientific Research for financing this work.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/2/1
Y1 - 2021/2/1
N2 - In this study, nutrients release/adsorption from/by raw poultry manure-derived biochar produced at a pyrolysis temperature of 600 °C (RPM-B) was assessed under static and dynamic conditions. Batch sequential leaching experiments of RPM-B for a total contact time of 10 days showed that both phosphorus and potassium were slowly released but with higher amounts compared to various other animal- and lignocellulosic-derived biochars. The cumulated released P and K amounts were assessed to 93.6 and 17.1 mg g-1, which represent about 95% and 43% of their original contents in the RPM-B, respectively. The column combined leaching/adsorption experiments showed that amending an alkaline sandy agricultural soil with two doses of RPM-B (at 5% and 8% w:w) resulted in an efficient retention of NO3-N and NH4-N, and on the contrary, important leached amounts of PO4-P, K+, Mg2+, and Ca2+ but with relatively slow kinetic release rates for a long period. Even after 40 days of dynamic leaching, these latter nutrients continued to be released with kinetic rates lower than 10 mg kg-1 d-1. Thus, compared to synthetic fertilizers, RPM-B valorization as organic amendment for poor semiarid soils could be considered as an attractive, eco-friendly, and sustainable waste recycling option.
AB - In this study, nutrients release/adsorption from/by raw poultry manure-derived biochar produced at a pyrolysis temperature of 600 °C (RPM-B) was assessed under static and dynamic conditions. Batch sequential leaching experiments of RPM-B for a total contact time of 10 days showed that both phosphorus and potassium were slowly released but with higher amounts compared to various other animal- and lignocellulosic-derived biochars. The cumulated released P and K amounts were assessed to 93.6 and 17.1 mg g-1, which represent about 95% and 43% of their original contents in the RPM-B, respectively. The column combined leaching/adsorption experiments showed that amending an alkaline sandy agricultural soil with two doses of RPM-B (at 5% and 8% w:w) resulted in an efficient retention of NO3-N and NH4-N, and on the contrary, important leached amounts of PO4-P, K+, Mg2+, and Ca2+ but with relatively slow kinetic release rates for a long period. Even after 40 days of dynamic leaching, these latter nutrients continued to be released with kinetic rates lower than 10 mg kg-1 d-1. Thus, compared to synthetic fertilizers, RPM-B valorization as organic amendment for poor semiarid soils could be considered as an attractive, eco-friendly, and sustainable waste recycling option.
KW - Adsorption
KW - Leaching
KW - Nutrients
KW - Poultry manure biochar
KW - Sequential extraction
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U2 - 10.3390/su13031212
DO - 10.3390/su13031212
M3 - Article
AN - SCOPUS:85100082249
SN - 2071-1050
VL - 13
SP - 1
EP - 26
JO - Sustainability (Switzerland)
JF - Sustainability (Switzerland)
IS - 3
M1 - 1212
ER -