Image from Milne et al 1998.

Image from Milne et al 1998.

Image from Milne et al 1998. As temperature increases, tar product types shift to different classes of compounds with higher temperatures yielding lower quantities of aromatic PAHs.

Image from Milne et al 1998. Note similarity to results from APL's Multi-fuel Run Comparison

References

Milne, T. A., Evans, R. J., & Abatzoglou, N. (1998). Biomass gasifier “tars”: their nature, formation, and conversion. November 1998. NREL/TP-570-25357. Retrieved from http://media.godashboard.com/gti/IEA/TomandNicolasreport.pdf.