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

revised on 10.12.2019, 21:44 and posted on 18.12.2019, 10:36 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.


Email Address of Submitting Author


Czech University of Life Sciences Prague


Czech Republic

ORCID For Submitting Author


Declaration of Conflict of Interest

No conflict of interest