This might be a stupid question but...
I am looking over this document for allowable emissions for PM particles in biomass furnaces.
They are given in lbs/MBTU, pounds per million British Thermal Units of heat input
How is this converted into concentration values? I know BTU is easily converted to joules.
Don't I have to know the composition of my biomass to convert? For one kg of biomass I get a certain amount of PM, but is this generally converted to concentration levels, e.g. mg/cc