Hi everyone, thanks for your ...

Hi everyone, thanks for your informative answers! It's much appreciated.

The purpose of the research is to model GHG emissions from land application of sludge from WWTPs. The model will then be employed for a web-based tool for GHG emission and energy consumption assessments in low and middle-income countries.

The idea of running experimental tests is interesting indeed, but hardly feasible, as it would require separate tests for each utility

The rationale is to keep inputs to a minimum, since utilities don't normally have access to extensive data on their sludge production.  

As for now, CO2 emissions were mostly related to fuel consumption for land application, CH4 emissions were considered negligible and N2O emission were related to the soil typology (fine or coarse-textured) and C/N ratios in the soil, according to the emissions factors provided by IPCC

The tool I'm working on can be found at http://ecam.hol.es

If anyone has any other hints on how to further refine the model, please post them here!

Thanks again!

Marco Salmistraro