Environmental performances of production and land application of sludge-based phosphate fertilizers | Performances environnementales de la production et de l'épandage de fertilisants phosphatés boue-sourcés - cas d'étude ACV
2020
Pradel, Marilys | Lippi, M. | Daumer, M.L. | Aissani, Lynda | Université Clermont Auvergne [2017-2020] (UCA [2017-2020]) | Technologies et systèmes d'information pour les agrosystèmes (UR TSCF) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Optimisation des procédés en Agriculture, Agroalimentaire et Environnement (UR OPAALE) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | UNIVERSITE BRETAGNE LOIRE RENNES FRA ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
[Departement_IRSTEA]Ecotechnologies [TR1_IRSTEA]INSPIRE [ADD1_IRSTEA]Équiper l'agriculture
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Показать больше [+] Меньше [-]Английский. Phosphorus (P) is a non-renewable resource extracted from phosphate rock to produce agricultural fertilizers. Since P is essential for life, it is important to preserve this resource and explore alternative sources of P to reduce its criticality. This study aimed to assess whether fertilizing with sludge-based phosphate fertilizers (SBPF) can be a suitable alternative to doing so with fertilizers produced from phosphate rock. Environmental impacts of production and land application of SBPF from four recovery processes were compared to those of two reference scenarios: triple super phosphate (TSP) and sewage sludge. To avoid bias when comparing scenarios, part of the environmental burden of wastewater treatment is allocated to sludge production. The CML-IA method was used to perform life cycle impact assessment. Results highlighted that production and land application of SBPF had higher environmental impacts than those of TSP due to the large amounts of energy and reactants needed to recover P, especially when sludge had a low P concentration. Certain environmental impacts of production and land application of sewage sludge were similar to those of SBPF. Sensitivity analysis conducted for cropping systems highlighted variability in potential application rates of sewage sludge or SBPF. Finally, because they contain lower contents of heavy metals than sewage sludge or TSP, SBPF are of great interest, but they require more mineral fertilizers to supplement their fertilization than sewage sludge. Thus, SBPF have advantages and disadvantages that need to be considered, since they may influence their use within fertilization practices.
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Эту запись предоставил Institut national de la recherche agronomique