Two common tree species, ash ( Fraxinus sp.) and oak Quercus sp.), could provide readily available media for denitrifying bioreactors that use wood-based carbon biological nitrate treatment. However, it is not known if the wood from Emerald Ash Borer-killed (EAB-killed) trees an effective source removal compared to other species or high-tannin nature of inhibits denitrification potential. This ...

The performance of a top-lit updraft gasifier affected by biomass (pine wood) particle size, moisture content and compactness was studied in terms of the biochar yield, biomass burning rate, syngas composition and tar content. The highest biochar yield increase (from 12.2% to 21.8%) was achieved by varying the particle size from 7 to 30 mm, however, larger particles triggered tar generation tha...

A kinetic model for predicting biochar, producer gas, and tar formations of top-lit updraft (TLUD) gasification was developed. The three main zones within the TLUD gasifier, pyrolysis, incomplete combustion, reduction reaction zones, were incorporated into sequentially solved. Validated with experimental data, found capable biochar yield on pine woodchips at varying airflow rates, biomass moist...