The Study of Kinetic Properties and Analytical Pyrolysis of Coconut Shells

Abstract

The kinetic properties of coconut shells during pyrolysis were studied to determine its reactivity in ground form. The kinetic parameters were determined by using thermogravimetric analyser. The activation energy was 122.780 kJ/mol. The pyrolysis products were analyzed using pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). The effects of pyrolysis temperature on the distribution of the pyrolytic products were assessed in a temperature range between 673 K and 1073 K. The set time for pyrolysis was 2 s. Several compounds were observed; they were grouped into alkanes, acids, ethers and alcohols, esters, aldehydes and ketones, furans and pyrans, aromatic compounds, and nitrogen containing compounds. The product compositions varied with temperature in that range. The highest gas proportion was observed at high temperature while the acid proportion was observed to be highest in coconut shells, thus lowering the quality of bio-oil. It has been concluded that higher pyrolysis temperature increases the amount of pyrolysis products to a maximum value. It has been recommended to use coconut shell for production of gas, instead of production of bio-oil due to its high proportion of acetic acid.

Improving Quality and Yield Production of Coconut Shell Charcoal Through a Modified Pyrolysis Reactor with Tar Scrubber to Reduce Smoke Pollution

“…The percentage of ash that is allowed cannot be too large. Carbonization conventionally results in high ash content analysis compared to pyrolysis, because conventionally burned coconut shells have a tendency to interact more with air in the environment so that the biomass is decomposed faster to ash [29]. In accordance with Table 2, the ash content in conventional charcoal is higher at 2.2601% while the pyrolysis charcoal is 1.3633%.…”

“…It can be seen that the presence of tar scrubbers does not reduce the quality of charcoal. Moisture content shows the water contained in charcoal, the water content can be affected by the water content contained in the raw material, carbonization temperature and the drying process [29]. From Table 2 we know that the water content in conventional charcoal is higher at 0.9239% compared to pyrolysis charcoal.…”

Synthesis of Carbon from Rice Groats at Various Pyrolysis Temperatures and Its Application for the Recovery of Chromium Wastewater from the Tannery Industry

“…E-ISSN: 2720-9326 P-ISSN: 2716-0459 EKSAKTA journal.uii.ac.id/eksakta February 2023, Volume 4, Issue 1, 23-28 [11,12,13,14]. Pyrolysis is commonly used for organic compounds.…”