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Effects of Synthesis Method, Feedstock Type, and Pyrolysis Temperature on Physicochemical Properties of Biochar Nanoparticles by Hedieh Behnam; Ahmad Farrokhian Firouzi is a Engineering article available to read on EtoBox.

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Nowadays, biochar nanoparticles have been the subject of intense debates due to having conflicting influences on the environment. Therefore, acquiring knowledge about the contributing factors affecting their characteristics is all-important. This study aimed to investigate the effects of production techniques (sonication/centrifugation and hydrothermal using H 2 SO 4 / HNO 3 ) of biochar nanoparticles derived from two feedstock types (corn (Zea mays L.) residues and Conocarpus erectus L. wood) and pyrolysis temperatures (400 °C and 700 °C) on their physicochemical properties. Furthermore, hydrodynamic size distribution, morphology, elemental compositions, aromaticity, polarity, pH, ash content, yield, zeta potential, specific surface area, pore volume, average pore diameter, and surface functional groups of biochar nanoparticles and bulk types were investigated. The results revealed that all biochar nanoparticles generated by the hydrothermal method had the most polarity (O/C), surface functional groups, stability (negative zeta potential), and surface area compare to those of nanoparticles prepared by the other method and even the bulk biochars. However, their aromaticity (H/C), p

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Author

Hedieh Behnam; Ahmad Farrokhian Firouzi

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Engineering (Physical Sciences)