Effects of alkali metal, Na2ZrO3, was quantified on the catalytic and non-catalytic co-pyrolysis of microalage and digested sludge residue using thermogravimetric analysis and kinetic modeling. A mix culture of microalgae (containing Chlorella sp., Chroococcus and Scenedesmus acutus) and digested sludge residue were co-pyrolysed at three diffrenent heating rates 5, 10 and 15 &lt;span style="font-size:10.8333px"&gt;o&lt;/span&gt;C/min. The major advantages noticed with the catalysts were initiating the onset of thermal decomposition at lower temperatures and lowering the activation energy. The mean activation energies estimated by Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) methods and were within 164-166 and 144-147 kJ mol−1 for samples with and without catalysts respectively. Aditionally, the reaction mechanisms for the samples were identified. The results obtianed in this study provide necessary and useful information for designing pyrolysis reactor for co-pyrolysis of biomass.

Thermogravimetric and kinetic analysis of catalytic and non-catalytic co-pyrolysis of microalgae and digested sludge residue

256th National Meeting (2018)

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