Evaluation of Different Capture Solutions for Ammonia Recovery in Suspended Gas Permeable Membrane Systems.

ABSTRACT: Gas permeable membranes (GPM) are a promising technology for the capture and recovery of ammonia (NH₃). The work presented herein assessed the impact of the capture solution and temperature on NH₃ recovery for suspended GPM systems, evaluating at a laboratory scale the performance of eight different trapping solutions (water and sulfuric, phosphoric, nitric, carbonic, carbonic, acetic, citric, and maleic acids) at 25 and 2 °C. At 25 °C, the highest NH₃ capture efficiency was achieved using strong acids (87% and 77% for sulfuric and nitric acid, respectively), followed by citric and phosphoric acid (65%) and water (62%). However, a remarkable improvement was observed for phosphoric acid (+15%), citric acid (+16%), maleic acid (+22%), and water (+12%) when th

SUBMITTER: Soto-Herranz M 

PROVIDER: S-EPMC9228927 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature