RT info:eu-repo/semantics/article
T1 Comparison of the ammonia trapping performance of different gas-permeable tubular membrane system configurations
A1 Soto Herranz, María
A1 Sánchez Báscones, Mercedes
A1 García González, María Cruz
A1 Martín Ramos, Pablo
K1 Ammonia
K1 Amoniaco
K1 Membranes (Technology)
K1 Membranas (Tecnología)
K1 Ammonia recovery
K1 Recuperación de amoníaco
K1 Gas-permeable membrane
K1 Membrana permeable al gas
K1 Submerged GPM system
K1 Sistema GPM sumergido
K1 Suspended GPM system
K1 Sistema GPM suspendido
K1 3303 Ingeniería y Tecnología Químicas
AB The technology of gas-permeable tubular membranes (GPMs) is promising in reducing ammonia emissions from livestock manure, capturing NH3 in an acidic solution, and obtaining final products suitable for valorization as fertilizers, in line with the principles of the circular economy. This study aimed to evaluate the performance of several e-PTFE membrane systems with different configurations for the recovery of NH3 released from pig slurry. Ten different configurations were tested: only a submerged membrane, only a suspended membrane in the same chamber, only a suspended membrane in an annex chamber, a submerged membrane + a suspended membrane in the same chamber, and a submerged membrane + a suspended membrane in an annex chamber, considering in each case the scenarios without and with agitation and aeration of the slurry. In all tests, sulfuric acid (1N H2SO4) was used as the NH3 capture solution, which circulated at a flow rate of 2.1 L·h−1. The results showed that NH3-N removal rates ranged from 36–39% (for systems with a single submerged or suspended membrane without agitation or aeration of the slurry) to 70–72% for submerged + suspended GPM systems with agitation and aeration. In turn, NH3-N recovery rates were found to be between 44–54% (for systems with a single membrane suspended in an annex compartment) and 88–91% (for systems based on a single submerged membrane). However, when choosing a system for farm deployment, it is essential to consider not only the capture and recovery performance of the system, but also the investment and operating costs (ranging from 9.8 to 21.2 €/kg N recovered depending on the selected configuration). The overall assessment suggests that the simplest systems, based on a single membrane, may be the most recommendable.
PB MDPI
SN 2077-0375
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/60015
UL https://uvadoc.uva.es/handle/10324/60015
LA eng
NO Membranes, 2022, Vol. 12, Nº. 11, 1104
NO Producción Científica
DS UVaDOC
RD 24-nov-2024