The Use of Inorganic Packing Materials during Methane Biofiltration

Abstract EN

The objective behind this study is to select a suitable inorganic packing material for methane biofiltration.

Three packing materials are to be compared: two rock materials (average particles' sizes: 2 and 5 mm) and one porous clay particles (average particle size of 7 mm).

The main parameter used to assess the efficiency of the packing material is the methane elimination capacity.

The study reveals that the rock material having an average particle size around 2 mm is to be preferred.

This result is probably due to its high specific surface area and to its good surface properties as compared to the other 2 tested porous materials.

The influence of the nonirrigation with the nutrient solution of the biofilter is also investigated.

It has been found that nonirrigation of biofilter causes the biofilter performance to decrease significantly (e.g., 45% decrease in 1 week) even with the humidification of the gas phase prior to its introduction into the biofilter.