Abstract
In the present work, catalytic co-pyrolysis of rice husk with low density polyethylene (LDPE) was investigated to enhance the amount of gasoline range hydrocarbons in the bio-oil. Zeolite Socony Mobil#5(ZSM-5) was used as catalyst. The specific surface area, pore volume and the average pore size of ZSM-5 were evaluated to be 418.041 m2/g, 0.227 cc/g and 1.628 nm respectively. Optimum temperature for obtaining highest bio-oil yield for non-catalytic co-pyrolysis was 600 °C, resulting in yield of 51.26 %. For catalytic co-pyrolysis, the optimum temperature was 500 °C with a bio-oil yield of 38.87 %. H/C ratio of gasoline range hydrocarbon oil obtained by catalytic co-pyrolysis was 1.21, while the oxygen content was 2.51 %.The results of GC HRMS revealed that, the gasoline range hydrocarbon oil obtained by catalytic co-pyrolysis contained 17.65 % Cycloalkanes, 6.131 % alcohols, 31.75 % esters and 32.68 % alkenes.
Highlights
Pyrolysis is regarded as promising technology for the production of bio-oils from biomass feedstock [1,2,3,4,5,6]
H/C ratio of gasoline range hydrocarbon oil obtained by catalytic co-pyrolysis was 1.21, while the oxygen content was 2.51 %.The results of GC HRMS revealed that, the gasoline range hydrocarbon oil obtained by catalytic co-pyrolysis contained 17.65 % Cycloalkanes, 6.131 % alcohols, 31.75 % esters and 32.68 % alkenes
Carbon yield of aromatics is low (10-30 %) and large amounts of bio-char and coke are still produced which can be attributed to low H/C ratio of biomass, which ranges from 0 to 0.3 [9]
Summary
Pyrolysis is regarded as promising technology for the production of bio-oils from biomass feedstock [1,2,3,4,5,6]. Catalytic fast pyrolysis is one more attractive technique wherein the biomass is subjected to pyrolysis in the presence of acidic catalyst such as zeolites. This method offers advantages such as moderate pressure and temperatures requirement and does not require hydrogen. In Co-pyrolysis, biomass is co-fed with some hydrogen rich feedstocks such as waste plastics. It was found that, the quality of bio-oil co-pyrolysis was higher than that from pyrolysis of biomass alone [11]. Rice husk is generated as byproduct of milling factory and abundantly available to serve as a source of co-pyrolysis for current energy sector
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
