Pyrolysis of Laminaria japonica with biochar production and its characteristics

Abstract

In the present paper, biochar from the Laminaria japonica from brackish lagoons (Sea of Okhotsk, Sakhalin Island) was obtained by a stepwise pyrolysis at 500 °C. The properties of concerned biochar (elemental composition, specific surface area, particle size distribution) were studied. It was shown that the Laminaria japonica biochar has 0.2–18 μm particle sizes with a complex branched surface of high microporosity and a specific surface area of 38.6 m2g-1. Aforementioned biochar has the high content of carbon (~60 at%) and high content of oxygen (~34 at.%).