Evaluation of Physical Parameters Change Using 2500 Micron Nozzle and Acidic Water Solution on Ammonia Removal in a Spray Tower

Background & objectives: Air pollution is one of the most important environmental problems that have become a serious threat to human health in recent years with the development of societies and industrialization. Ammonia is one of the most important pollutants. The spray tower is a wet scrubber used for ammonia purification, so the present study was conducted to investigate the change of physical parameters using a 2500µm nozzle and acidic water solution on ammonia removal in a spray tower under standard conditions. Methods: In the present study, the amount of ammonia gas removal was investigated by changing parameters such as air pressure, pollutant density and number of nozzles, using a washing tower at two inlet and outlet locations and a total of 162 test times with three replicates. Data were analyzed by One-Way ANOVA in SPSS-21 software. Results: The results showed that increasing the number of nozzles and the spray pressure of the spray tower significantly increased ( p <0.05) and increasing the inlet load significantly decreased the efficiency ( p <0.05) of ammonia gas removal efficiency. Conclusion: By increasing the number of nozzles, the pressure of the dilute sulfuric acid solution and reducing the density of the pollutant gas, good efficiency can be achieved in removing ammonia gas from the air stream using spray tower.