NOVELTY - A biomass gasification system (10) comprises: a biofilter assembly configured to be disposed within a filter unit of the biomass gasification system and configured to filter particulate matter from a producer gas flowing through the filter unit while allowing a remainder of the producer gas to pass through the biofilter assembly. The biofilter assembly comprises: a support structure; and a biofilter disposed on the support structure and including a biomaterial configured to be gasified in a biomass gasification reactor of the biomass gasification system.    USE - As biomass gasification system (claimed) used in several power plants to convert biomass into a more combustible form, particularly as producer gas.    ADVANTAGE - The present gasification system offers distinct advantages over traditional biomass gasification systems that typically do not utilize biomaterials in the fine particulate filters, e.g. one technical effect of present system is that the fine particulate matter (e.g. tar) adhered to the used biofilters may be reused after being filtered from the producer gas, and another technical effect is that the need to dispose of the used filters is eliminated, thus reducing waste, increasing energy recovery, and increasing plant efficiency. Thus the present gasification system utilizes the spent biofilter and its captured particulates as additional feedstock, rather than discarding the filter and wasting the particulate and further adding to landfills.    DETAILED DESCRIPTION - A biomass gasification system (10) comprises: a biofilter assembly configured to be disposed within a filter unit of the biomass gasification system and configured to filter particulate matter from a producer gas flowing through the filter unit while allowing a remainder of the producer gas to pass through the biofilter assembly. The biofilter assembly comprises: a support structure; and a biofilter disposed on the support structure and including a biomaterial configured to be gasified in a biomass gasification reactor of the biomass gasification system. The support structure comprises a cylindrical mesh support structure. The biofilter comprises a hollow cylinder configured to be received by the cylindrical mesh support structure. The biofilter is configured to retain particles greater than 1 mu M. The biomass gasification system comprises: a feedstock preparation unit (14) configured to process biomass to generate a biomass feedstock; a biomass gasification reactor (16) configured to gasify the biomass feedstock in the presence of air to generate a producer gas; and a filter unit comprising a biofilter configured to filter particulate matter from the producer gas to generate a reduced particulate producer gas, where at least a portion of the biofilter comprises a biomaterial configured to be gasified in the biomass gasification reactor. The biomass gasification system (24, 26, 28) comprises scrubbers configured to scrub the producer gas upstream of the filter unit, and a power generation system configured to combust the reduced particulate producer gas to generate power. An INDEPENDENT CLAIM is included for gasifying particulates from producer gas involving: directing a producer gas through a biofilter to remove particulates from the producer gas, where the biofilter comprises a biomaterial; and feeding the biofilter to a biomass gasification reactor to gasify the particulates.    DESCRIPTION OF DRAWING(S) - The figure shows a block diagram of a biomass gasification system illustrating recycle of a biofilter to a feedstock preparation unit.    Biomass gasification system (10)    Feedstock preparation unit (14)    Biomass gasifier (16)    Cleaning and cooling subsystem (18)    Power generation system (20)    Cyclone (22)    First scrubber (24)    Second scrubber (26)    Third scrubber (28)    Blower (30)    Flare (32)    Filter unit (34)