AI Article Synopsis
- The study focused on pyrolysis of two invasive plant species, Lantana camara and Mimosa pigra, to optimize conditions for maximum char yield and higher heating value (HHV).
- Significant findings indicated that increasing temperature positively influenced char yield and HHV, while the effects of heating rate and hold time were minimal.
- Scaling up the experiments resulted in increased secondary char formation, boosting HHVs to 30.82 MJ/kg for LC and 31.61 MJ/kg for MP, with additional factors like gas composition and temperature affects analyzed through chromatography.
Article Abstract
Pyrolysis of invasive non-indigenous plants, Lantana camara (LC) and Mimosa pigra (MP) was conducted at milligram-scale for optimisation of temperature, heating rate and hold time on char yield and higher heating value (HHV). The impact of scaling-up to gram-scale was also studied, with chromatography used to correlate gas composition with HHV evolution. Statistically significant effects of temperature on char yield and HHV were obtained, while heating rate and hold time effects were insignificant. Milligram-scale maximised HHVs were 30.03MJkg (525°C) and 31.01MJkg (580°C) for LC and MP, respectively. Higher char yields and HHVs for MP were attributed to increased lignin content. Scaling-up promoted secondary char formation thereby increasing HHVs, 30.82MJkg for LC and 31.61MJkg for MP. Incondensable gas analysis showed that temperature increase beyond preferred values caused dehydrogenation that decreased HHV. Similarly, CO evolution profile explained differences in optimal HHV temperatures.
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| http://dx.doi.org/10.1016/j.biortech.2017.06.086 | DOI Listing |
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