Greetings,
I have not work with cocnut shell, but I think that it is a lino-cellulosic biomass with given rates of carbon, hydrogen, oxygen, nitogene and sulfure and chlorine (as traces).
After combustion and depending on the air factor you can be Under lack, stoechiometric or excess air. gaseous emissions are CO, CO2, NOx (NO, NO2), SOx (SO2, SO3) and some VOC (volatile organic compounds in which CH4 is dominant).
For this I think that preliminary ulimate and proximate analyses should be done before building your study.
Hello Ralph,
In order to define gaseous mixture composition of organic material pyrolysis you have to take into account process parameters, and in particular temperature and residence time. It is possible to predict a composition of pyrolysis gas if you know an elemental composition of raw material (i.e. coconut shells). I would suggest to use a similar organic material as a reference for further extension to coconut shell material. There are some useful papers available online (there are much more in scientific databases) on coconut shell pyrolysis kinetics and chemistry:
http://ethesis.nitrkl.ac.in/5346/1/211CH1036.pdf
http://www.hindawi.com/journals/jre/2015/307329/
http://www.met.kth.se/energy/Publications/weihong/FPT%2087(2006)523-530-alberto.pdf
In addition to the link provided by Vyacheslav Lapkovsky, you can also check paper by Alhassan and Andresen, 2013 on the Effect of Bone during Fixed Bed Pyrolysis of Pistachio Nut Shell. www.IJSEI.com. The paper provides information on the gaseous species from Pistachio nut shell. I believed coco nut shell is not all that far from Pistachio nut shell. they both contain high amount of volatiles.
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