Proyecto LIFE Ammonia Trapping: planta piloto para la captura de amoniaco del purín

González, Mario; García, I. González; Riaño, B.; Salces, B. Molinuevo; González, D. Hernández; Herranz, M. Soto; Guimaraes, Adriana Correa; Gracia, Luis; Báscones, Mercedes Sánchez

doi:10.26754/c_agroing.2019.com.3435

Cited by 1 publication

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wastewater was continuously agitated using magnetic stirrers. Synthetic wastewater was prepared to simulate livestock wastewater with a TAN concentration of approximately 3400 mg N L −1 and a carbonate alkalinity of 18 g CaCO 3 L −1 [18]. To do so, amounts of 66.8 g of NH 4 Cl and 122 g of NaHCO 3 were added per litre.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…GPM technology has been investigated with great success to recover nitrogen from ammonia-rich wastewater, such as livestock waste and anaerobic digestate, at laboratory scale [13][14][15][16][17]. Some of these previous works have studied the influence of such operational conditions as pH control [9,15] and the flow rate of the acidic solution on ammonia recovery efficiency [9,18]. Other works have focused on the effect of wastewater characteristics (such as TAN, inorganic carbon, and organic matter content) on ammonia recovery using gaspermeable membranes [15,19].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Operational Conditions on Ammonia Recovery from Simulated Livestock Wastewater Using Gas-Permeable Membrane Technology

et al. 2022

View full text Add to dashboard Cite

Gas-permeable membrane (GPM) technology is a novel alternative to reduce N content in wastewater while recovering N in the form of an ammonium salt solution that can be used as fertilizer. This work aims to elucidate the effects of three operational conditions on the performance of GPM technology for ammonia recovery in batch conditions using synthetic wastewater that simulates livestock wastewater. Firstly, the effect of the ratio of the initial mass of total ammonia nitrogen (TAN) per membrane surface from 197 to 936 g N per m2 of membrane was investigated. The highest ratio presented the highest TAN recovery rate (90 g N m−2 d−1). Secondly, the influence of the ratio of the volume of wastewater per volume of acidic trapping solution in the range from 7.8 to 33.3 L L−1 was studied. In this case, the higher the ratio, the higher the N concentration in the trapping solution, achieving a N concentration of 43,773 mg N L−1 with a ratio of 33.3 L L−1. Finally, two different TAN concentrations (<0.1 and 30 g N L−1) in the acidic trapping solution were evaluated. The use of a trapping solution with a TAN concentration of 30 g N L−1 led to a reduction in the TAN recovery rate, which meant that the diffusion of ammonia through the membrane was more difficult as the trapping solution became saturated with TAN. Overall, the tested conditions highly influence the performance of GPM technology, and therefore, these conditions should be set to optimize the ammonia recovery and reduce nitrogen losses.

show abstract

Section: Experimental Set-upmentioning

confidence: 99%