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9. Nitrogen recovery from intensive livestock farms using a simplified ammonia stripping process.

Author

Finzi, Alberto, Ferrari, Omar, Riva, Elisabetta, and Provolo, Giorgio

Subjects
ELECTRIC power consumption, LIVESTOCK farms, PILOT plants, AMMONIUM sulfate, SULFURIC acid
Abstract

The ammonia (NH3) stripping process can recover nitrogen (N) from slurry and digestates as a mineral fertilizer, but it is currently expensive and difficult to manage at the farm level. Hence, a simple process is required. This study aimed to test a modular (based on farm N surplus) slow-release NH3 stripping process at a pilot plant scale. NH3 volatilization was promoted in a closed reactor, and then, the NH3 was removed by an air stream through the reactor headspace. The NH3-loaded air was purified in a scrubber, where NH3 reacted with sulfuric acid to form ammonium sulfate (AS). In total, 11 trials were conducted using pig slurry, dairy cattle slurry, and digestates: 7 trials were carried out with the reactors heated to 40°C, 2 trials were carried out at an ambient temperature, and the other 2 trials were carried out with the addition of sodium hydroxide (NaOH). To assess the technical-economic sustainability of the pilot plant, the total ammoniacal nitrogen (TAN) removal rate, electricity consumption, acid requirements, and AS quality and costs were evaluated. The pilot plant yielded TAN recovery amounts of 45% in 2 weeks with the reactors heated to 40°C, 64% in 1 week with NaOH addition, and 25% in 2 weeks at an ambient temperature. The N concentration in the AS solution reached 85.9 g kg-1, with an average value of 35.2 g kg-1. The electricity consumption, acid requirement, and operational costs in an optimized system were approximately 0.52 kWh kgN-1 recovered, 3.5 kg pure acid kgN-1 recovered, and 0.86 € kgN-1 recovered, respectively. Compared to other technologies, the simplified stripping process is slower but with similar removal efficiencies and lower energy consumption. Thus, this finding could be suitable for improving the N use in intensive livestock farms. [ABSTRACT FROM AUTHOR]

Published
2024
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25. Insights about the Choice of Pig Manure Processing System in Three Italian Regions: Piemonte, Friuli Venezia Giulia, and Veneto

Author

Marinis, Pietro De, Ferrari, Omar, Allisiardi, Erica, Mattia, Chiara De, Caliandro, Giuliana, Dinuccio, Elio, Borin, Maurizio, Ceccon, Paolo, Sali, Guido, and Provolo, Giorgio

Subjects
lcsh:GE1-350, pig manure, decision criteria, BAT adoption, managers’ perception, lcsh:TD194-195, lcsh:Environmental effects of industries and plants, lcsh:TJ807-830, Decision criteria, Managers’ perception, Pig manure, lcsh:Renewable energy sources, lcsh:Environmental sciences
Abstract

The adoption of best available technologies (BATs) by the livestock sector has a fundamental role in developing a sustainable agricultural system. Italy is the EU member with the highest percentage of manure treated, but processing facilities are regionally scattered and the adoption of BATs is far from being scaled-up. The adoption is a matter of multicriteria decision-making and full knowledge on how to foster the transition is still lacking. The present research aims to deepen the available knowledge by analysing the perception of 40 pig farm managers about decision criteria behind the adopted manure management system across three different Italian regions. We assessed farms in Piemonte, Friuli Venezia Giulia, and Veneto. All farms have adequate storage facilities, but 82.5% adopt no processing technique. The two most important decision criteria are economic, i.e., the minimization of treatment and spreading costs. The emerging picture allows us to conclude that BAT adoption is still adopted as a mere consequence of legal obligation. Economic constraints prevail as there is a lack of information and uncertainty. Clear perspectives and recognition of virtuous behavior prevent farmers from making decisions based on environmental or social criteria. Therefore, effective policies oriented to fill these gaps are needed to accelerate the transition towards sustainability.

Published
2021

26. Reducción de las emisiones de amoníaco en la agricultura mediterránea mediante técnicas innovadoras de fertirrigación con purines (LIFE ARIMEDA LIFE16 ENV/ES/0004000)

Author

Abió, David, Balcells Oliván, María, Bacenetti, Jacopo, Clavería Laborda, Ignacio, Crespo, Azucena, Daudén Ibáñez, Arturo, Finzi, Alberto, Gea, Ramón, Guidetti, Andrea, Guido, Viviana, Guillén Castillo, Mónica, Herrero Mallén, Eva, Merigo, Giambattista, Provolo, Giorgio, Quílez y Sáez de Viteri, Dolores, Salvador Esteban, Raquel, Sanz, Alexia, Ruffini, Giacomo, and Sommariva, Flavio

Subjects
Control de la contaminación, reducción de emisiones, Purín, Amoníaco, Fertirrigación
Abstract

Esta publicación ha sido elaborada como resultado de los trabajos realizados dentro del proyecto LIFE ARIMEDA: Reducción de emisiones de amoníaco en la agricultura mediterránea a través de técnicas innovadoras de fertirrigación con purín (LIFE16 ENV/ES/000400). El proyecto LIFE ARIMEDA ha recibido fondos del Programa LIFE de la Unión Europea. Published

Published
2021

29. ¿Es posible medir la volatilización de amoniaco en parcelas agrícolas con técnicas robustas y sencillas?

Author

Herrero Mallén, Eva, Guido, Viviana, Guillén Castillo, Mónica, Daudén Ibáñez, Arturo, Provolo, Giorgio, Rodríguez, Rocío, Sanz-Cobeña, Alberto, and Quílez y Sáez de Viteri, Dolores

Subjects
Suelos agrícolas, Amoníaco, Fertilización
Abstract

AGRADECIMIENTOS Este trabajo fue cofinanciado por el programa LIFE en el marco del Proyecto LIFE ARIMEDA (LIFE16 ENV/ES/000400) y se realizó con el apoyo y colaboración con la ETSIAAB Universidad Politécnica de Madrid

Published
2020

40. Global Warming and Acidification Potential Assessment of a Collective Manure Management System for Bioenergy Production and Nitrogen Removal in Northern Italy

Author

Provolo, Giorgio, Mattachini, Gabriele, Finzi, Alberto, Cattaneo, Martina, Guido, Viviana, and Riva, Elisabetta

Subjects
anaerobic digestion, lcsh:GE1-350, lcsh:TD194-195, centralised treatment, livestock manure, lcsh:Environmental effects of industries and plants, environmental assessment, lcsh:TJ807-830, lcsh:Renewable energy sources, aerobic treatment, gaseous emissions, lcsh:Environmental sciences
Abstract

Collective manure processing facilities to reduce nutrient loads and produce renewable energy are often proposed as feasible solutions in intensive livestock production areas. However, the transferring of effluents from farms to the treatment plant and back to farms, as well as the treatment operations themselves, must be carefully evaluated to assure the environmental sustainability of the solution. This study evaluated the global warming potential (GWP) and acidification potential (AP) of a collective treatment plant for bioenergy production and nitrogen removal as an alternative strategy to conventional on-farm manure management systems. Two manure management scenarios were compared: manure management on individual farms and management by a collective treatment plant. Data were collected at a collective processing plant and at the individual farms of the consortium to estimate emissions of CO2, CH4, N2O, NOx, NH3 and SO2. The plant receives manure from 21 livestock production units, treating 660 tonnes day&minus, 1 of manure. The GWP and AP indicators were calculated to evaluate the potential impact of the two management solutions. The collective solution reduced both GWP (&minus, 52%) and AP (&minus, 43%) compared to manure management separately by each farm. Further improvement might be obtained in both indicators by introducing mitigation techniques in farm manure storage and manure application to soil.

Published
2018

49. Treatment of swine manure:case studies in European's N-surplus areas

Author

Cruz Garcia-Gonzalez, Maria, Riano, Berta, Teresa, Marta, Herrero, Eva, Ward, Alastair James, Provolo, Giorgio, Moscatelli, Giuseppe, Piccinini, Sergio, Bonmati, August, Pilar Bernal, Maria, Wisniewska, Hanna, and Proniewicz, Marcin

Subjects
anaerobic digestion, SPAIN, composting, LIQUID, manure treatment technologies, Greenhouse gas reduction, nitrification-denitrification, USA
Published
2016

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