Biofiltration of ammonia-contaminated air streams using porous compost and processed soil filters media
by Saeed Motesaddi Zarandi; Mohammad Reza Massoudinejad; Mohammad Bagher Miranzadeh; Zahra Tavakoli; Rouhullah Dehghani; Sajjad Hajiketabi; Ashraf Mazaheri Tehrani
International Journal of Environmental Technology and Management (IJETM), Vol. 19, No. 5/6, 2016

Abstract: The aim of our study was to compare ammonia removal from the air stream using biofilters containing porous compost and processed soil. The performances of biofilters were studied under different flow rates and NH₃ concentrations at 25°C and moisture (4080%). The obtained results demonstrated that the efficiency rate was decreased with the increasing of flow rate and ammonia concentration. The efficiency of porous compost bed varied between 84.6-98.2% while for processed soil bed was between 91.5-100%. Maximum efficiency for both of the beds occurred at a loading rate of 0.19 g NH₃ m⁻³ h⁻¹. Also, findings were shown that processed soil and porous compost beds were efficient for removal of ammonia up to 20 ppm concentration at a flow rate of 1 lit. min⁻¹ during 240 seconds. In conclusion, our study revealed that the processed soil bed was better than the porous compost one for ammonia removal from the contaminated air stream.

Online publication date: Fri, 14-Apr-2017

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