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Performance of a biofilter with compost and activated carbon based packing material for gas-phase toluene removal under extremely high loading rates

Kumar, Munna, Giri, Balendu Shekher, Kim, Ki-Hyun, Singh, Rajendra Prasad, Rene, Eldon R., López, M. Estefanía, Rai, Birendra Nath, Singh, Harinder, Prasad, Durga, Singh, Ram Sharan
Bioresource technology 2019 v.285 pp. 121317
Pseudomonas, activated carbon, biocatalysts, biofilters, composts, durability, gases, packaging materials, plaster, strength (mechanics), toluene
The main aim of this work was to evaluate the performance of a biofilter packed with a mixture of compost and activated carbon, for gas-phase toluene removal under very high loading rates. Plaster of Paris was used as a binder to improve the mechanical strength and durability of the packing media. The biofilter was operated continuously for a period of ∼110 days and at four different flow rates (0.069, 0.084, 0.126 and 0.186 m−3 h−1), corresponding to toluene loading rates of 160–8759 g m−3 h−1. The maximum elimination capacity (EC) achieved in this study was 6665 g m−3 h−1, while the removal efficiency (RE) varied from ∼70 to >95% depending on the loading rate tested. The biofilter was able to remove >99% of toluene using Pseudomonas sp. RSST (MG 279053) as the dominant toluene degrading biocatalyst.