Data di Pubblicazione:
2023
Citazione:
Pig Slurry Management Producing N Mineral Concentrates: A Full-Scale Case Study / A. Herrera, G. D’Imporzano, E. Clagnan, A. Pigoli, E. Bonadei, E. Meers, F. Adani. - In: ACS SUSTAINABLE CHEMISTRY & ENGINEERING. - ISSN 2168-0485. - 11:19(2023 May 15), pp. 7309-7322. [10.1021/acssuschemeng.2c07016]
Abstract:
Manure treatment to recover nutrients presents a
great challenge to delocalize nutrients from overloaded areas to
those needing such nutrients. To do this, approaches for the
treatment of manure have been proposed, and currently, they are
mostly under investigation before being upgraded to full scale.
There are very few fully operating plants recovering nutrients and,
therefore, very few data on which to base environmental and
economic studies. In this work, a treatment plant carrying out full-
scale membrane technology to treat manure to reduce its total
volume and produce a nutrient-rich fraction, i.e., the concentrate,
was studied. The concentrate fraction allowed the recovery of 46%
of total N and 43% of total P. The high mineral N content, i.e., N-
NH4/total-N > 91%, allowed matching the REcovered Nitrogen
from manURE (RENURE) criteria proposed by the European Commission to allow the potential substitution of synthetic chemical
fertilizers in vulnerable areas characterized by nutrient overloading. Life cycle assessment (LCA) performed by using full-scale data
indicated that nutrient recovery by the process studied, when compared with the production of synthetic mineral fertilizers, had a
lower impact for the 12 categories studied. LCA also suggested precautions which might reduce environmental impacts even more,
i.e., covering the slurry to reduce NH3, N2O, and CH4 emissions and reducing energy consumption by promoting renewable
production. The system studied presented a total cost of 4.3 € tons−1 of slurry treated, which is relatively low compared to other
similar technologies.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Life cycle assessment; Nutrient recovery; Reverse osmosis; Water recovery; Pig slurry
Elenco autori:
A. Herrera, G. D’Imporzano, E. Clagnan, A. Pigoli, E. Bonadei, E. Meers, F. Adani
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