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Published in:
2013 | OriginalPaper | Chapter
Impact of Pyrolysis Time and Temperature on Physicochemical Characteristics of Biochars from Wetland Plants
Authors : Niaz Muhammad, Zhongmin Dai, Haizhen Wang, F. Z. Xu, Jianming Xu
Published in: Functions of Natural Organic Matter in Changing Environment
Publisher: Springer Netherlands
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Abstract
In this study, two wetland plants (Ravenna grass and Thalia dealbata) were pyrolyzed at 300°C and 500°C for 2 h and 4 h in muffle furnace for biochar production, respectively, and their physical and chemical properties were investigated. Results revealed that the ash content, pH, C, N, CEC, EC, and P in biochars at 500°C were higher than at 300°C, while the yield, O, and H in biochars were opposite. The content of K, Mg, and Na in all types of wetland plant biochars was also higher at 500°C than at 300°C, but Mg content was not the case. However, no significant effect of pyrolysis time at both temperatures was observed in the physiochemical properties of various biochars.