Highlights The bulk density of woodchips in denitrifying bioreactors the field is unknown. In situ estimation methods were developed for use during construction or excavation. Dry densities aged at bioreactor bottoms lower than previous literature values. Moisture and particle size explained some, but not all, variation densities. Abstract . Woodchip a governs system hydraulics, this prime phys...

This article examines the EU Waste Directive and the implications of recent European case law for its implementation at national level. In particular, we consider how the directive has been implemented in the United Kingdom and the potential effects this may have on the use of forestry by-products as a bio-energy source. The analysis reveals that it is still unclear whether bio-energy materials...

A comprehensive process model is proposed to simulate the steam gasification of biomass in a bubbling fluidized bed reactor using Aspen Plus simulator. The models are implemented external FORTRAN codes for hydrodynamic and reaction kinetic calculations. Governing equations rates char water-gas shift reactions obtained from experimental investigations literature. Experimental results at differen...

Physical and chemical modification on biochar is an interesting approach to enhance the properties make them potential candidates in adsorption of heavy metals from water. Studies have shown that ultrasound treatments as well alkali activations has positive impact behaviour material. Base activation derived pre-treated woodchips were studied understand influence pre-treatment emerged it. 40 170...

Experiments have been conducted in a batch fixed bed lab-scale reactor to investigate the combustion behaviour of three different biomass fuels, poultry litter (PL), blend PL with wood chips (PL/WC) and softwood pellets (SP). Analysis data gathered after completion test runs, provided useful insights about thermal decomposition formation N gaseous species, release ash forming elements estimatio...

ABSTRACT. Various kinds of biomass fuels are used for boiler and other thermal applications. The presence moisture, ash calorific value known to be the most significant quality factors which influence effective performance a fuel plant. reasons measuring above mentioned perform economic analysis control combustion. relevant industries interested obtain method predicting these quickly consistent...