Effects of feedstock type, production method, and pyrolysis temperature on biochar and hydrochar properties
By Yining Sun, B. Gao, Ying Yao, J. Fang, M. Zhang, Yanmei Zhou, Hao Chen, Liuyan Yang. 2014
743 citations recorded by the source corpus.
Abstract This work explored the effect of temperature, production method, and feedstock type on the physicochemical and biological properties of biochars and hydrochars. Biochars and hydrochars made at lower temperatures had higher production rates. Higher pyrolysis temperatures not only increased carbon content of biochars but also produced higher thermal stability biochars that did not start to decompose in air after 400–450 °C. The production method showed strong effect on biochar properties. Compared to the dry-pyrolysis biochars derived from the same feedstocks, the hydrochars had more acidic pH values and lower carbon contents. The results showed that feedstock types could also influence characteristics of the biochars. None of the chars showed statistically significant effects on plant seed germination and seedling growth and thus could be used as soil amendments. Our findings indicated that biochars with different properties could be developed by changing production conditions to better satisfy their environmental applications.
Subfields: Biomaterials, Biomedical Engineering, Soil Science
View Paper: https://www.semanticscholar.org/paper/72fc4828cc5f1ea8162ce3e53b503094f51c6211
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Citations in the corpus
- A review of biochar as a low-cost adsorbent for aqueous heavy metal removal (2016, background): “The strong sorption ability of biochars produced from agricultural and forest residues may be attributed to their surface properties originating from the feedstock materials (Sun et al., 2014; Wang et al., 2015a).”
- Insight into biochar properties and its cost analysis (2016, methodology): “Different types of biomass feedstocks have been used for the production of BCs ranging from agricultural waste to timber based hard materials [17-22].”
- Surface functional groups of carbon-based adsorbents and their roles in the removal of heavy metals from aqueous solutions: A critical review. (2019, methodology): “The type of feedstock materials and carbon synthesis methodology such as carbonization/pyrolysis temperature for AC and biochar and the graphitization process for GO and CNTs are common factors determining the pore structure of carbon adsorbents [42, 85].”
- Environmental application of biochar: Current status and perspectives. (2017, background): “…at higher temperature exhibits lower H/C and O/C ratios than that at a lower temperature, indicating a gradual increase in aromaticity and decrease in polarity with increasing temperature (Suliman et al., 2016; Chen et al., 2016; Mahmood et al., 2015; Fryda and Visser, 2015; Sun et al., 2014).”