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Improving the Stability of Wastewater Derived Microalgae Carbon Materials: Products Characterization, and Kinetic Modelling

preprint
revised on 10.12.2019 and posted on 18.12.2019 by Ali Akhtar, Ivo Jiricek, Vladimir Krepl, Abbas Mehrabadi, Tatiana ivanova

Microalgae-derived char contains low stability and heating values with relatively high nitrogen content than lignocellulosic char. This study showed that co-pyrolysis helped improve the overall properties of char than individual pyrolysis of these feedstocks. Two batches of experiments were conducted (a) single step pyrolysis and (b) two-step pyrolysis in the range of highest treatment temperature of 400 – 600 °C. Single step pyrolysed char showed, lower aromaticity, higher yield, ash content and heating values of the char than two-step pyrolysed char. Similarly, ignition temperature and activation energy were higher during combustion by single step pyrolysed char than two-step char. Hence, two-step pyrolysed char is suitable in the energy applications, and low-temperature processing (400 – 500 °C) will result in optimum properties in terms of yield and heating values.

History

Email Address of Submitting Author

akhtarczu@gmail.com

Institution

Czech University of Life Sciences Prague

Country

Czech Republic

ORCID For Submitting Author

0000-0003-3141-2879

Declaration of Conflict of Interest

No conflict of interest

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