Comparative production of biochars from corn stalk and cow manure
2019
Liu, Ziyun | Zhang, Yuanhui | Liu, Zhidan
The aim of the present work was to compare corn stalk (CS) and cow manure (CM) for hydrochar production at different reaction temperatures (180–260 °C) and retention times (1–4 h). CM and CS resulted in hydrochars with significantly different physicochemical properties; however, both led to similar yields (30–65%). CM-derived hydrochar had a lower carbon content but a higher nitrogen and ash content than CS-derived hydrochar. CM-derived hydrochar demonstrated potential as a soil amendment due to its higher content of nitrogen, the presence of surface functional groups and higher specific surface area in comparison to CS-derived hydrochar. In comparison, CS-derived hydrochar demonstrated suitability as a solid fuel due to its high heating value and low ignition temperature. This study revealed that the composition of lignocellulose significantly impacted the properties and thus potential applications of hydrochar.
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