RT info:eu-repo/semantics/article
T1 Effect of alkali and membrane area on the simultaneous recovery of nitrogen and phosphorous from digestate by membrane technology and chemical precipitation
A1 González García, Isabel
A1 Riaño, Berta
A1 Molinuevo Salces, Beatriz
A1 García González, María Cruz
K1 Vaste valorization
K1 Tratamiento de desechos
K1 Organic wastes - Recycling
K1 Residuos orgánicos -  Reciclaje
K1 Agricultural wastes - Recycling
K1 Residuos agrícolas - Reciclaje
K1 Ammonia
K1 Amoniaco
K1 Phosphates
K1 Fosfatos
K1 Gas separation membranes
K1 Gases - Separation
K1 Circular economy
K1 Economía circular
K1 Sustainability
K1 Sustainable development
K1 Sostenibilidad
K1 Desarrollo sostenible
K1 Renewable energy resources
K1 Energías renovables
K1 3308.07 Eliminación de Residuos
K1 2204.05 Gases
K1 2210.19 Fenómenos de Membrana
K1 2510.91 Recursos Renovables
K1 3102 Ingeniería Agrícola
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB Nutrient recovery from the agri-food sector waste is an increasingly recognized option within the framework of the bioeconomy. Membrane technologies and chemical precipitation are among the best valued options for their economic and practical feasibility. In this study, the combination of gas-permeable membrane (GPM) technology for the recovery of nitrogen (N) and the chemical precipitation for phosphorous (P) recovery from anaerobically digested swine manure is evaluated. This work studies the effect of the membrane area and the addition of alkali on N and P recovery efficiencies. Specifically, two different membrane area ratios (180 and 100 g of N per m2 of membrane) with and without the addition of alkali were studied. High nutrient recovery efficiencies, of 77% for N and 80% for P, were obtained after 10 days of experiment with a ratio of 180 g N per m2 of GPM and the addition of NaOH (1.5 N), along with the precipitant agent (MgCl2) for P precipitation. Hence, a combined configuration was proposed to perform an effective simultaneous recovery of N and P with the minimum amount of membrane needed in a short time.
PB MDPI
SN 2071-1050
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/63678
UL https://uvadoc.uva.es/handle/10324/63678
LA eng
NO Sustainability, 2023, Vol. 15, Nº. 5, 3909
NO Producción Científica
DS UVaDOC
RD 03-jun-2024