BIOFILTRATION OF TOLUENE AND XYLENE EMISSIONS USING SCEDOSPORIUM APIOSPERMUMV. SARAVANAN AND N. RAJAMOHAN
In the present study, experiments are carried out for gaseous toluene and xylene removal using pure strain. The biofiltration is carried out at different gas flow rate of higher and lower orders and at different inlet toluene and xylene gas concentrations. The investigations are aimed to study the toluene and xylene elimination capacity of the biofilm binding in scedosporium apiospermum. A cocunut fiber was selected as a packing material for the development of biofilter. A maximum of 92% toluene removal was achieved at an inlet gas concentration of 0.1 gm-3 with gas flow rate of 0.15 m3h-1. For xylene maximum of 88 % removal efficiency was achieved at an inlet gas concentration of 0.1 gm-3 with gas flow rate of 0.12 m3h-1. A biofilm model incorporating zero-order kinetics was applied to interpret and characterize the process microkinetics. Theoretical total biofilm thickness and distribution coefficient for toluene and xylene were calculated for both high and low concentrations and gas flow rate, the system performance was well described by a diffusion model.
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