Coproduction of biofuels with biochar (the carbon-rich solid formed during biomass pyrolysis) can provide carbon-negative bioenergy if the biochar is sequestered in soil, where it can improve fertility and thus simultaneously address issues of food security, soil degradation, energy production, and climate change. However, increasing biochar production entails a reduction in bioenergy obtainabl...

This review on the formation of polyaromatic hydrocarbons (PAH) and dioxins during biomass fast pyrolysis was funded by the Washington State Department of Ecology. It includes a worldwide literature review of what is known and not known about this timely area. Areas needing further research and development work are identified and, as such, serve as a base for further work. For example, the need...

The method of processing biomass of various kinds by microwave-assisted pyrolysis has been presented. The fast pyrolysis process, characterized by rapid heating of the feedstock in the absence of oxygen and rapid cooling of the volatile intermediate reaction products, is one of attractive liquid biofuel production methods. However, the pyrolysis still requires improvements as regards the proces...

Waste cork granules of Quercus cerris bark were subjected to isothermal and non-isothermal slow pyrolysis. The heat the reaction, as well yields properties biochar, bio-oil, pyrolysis gas investigated by thermogravimetric analysis, FT-IR, CHN elemental higher heating value (HHV) determinations, scanning electron microscopy (SEM), chromatography (GC). was carried out in a semi-batch reactor usin...

Seven contrasting feedstocks were subjected to slow pyrolysis at low (300 or 350°C) and high temperature (550 or 600°C), and both biochars and the corresponding feedstocks tested for short-term ecotoxicity using basal soil respiration and collembolan reproduction tests. After a 28-d incubation, soil basal respiration was not inhibited but stimulated by additions of feedstocks and biochars. Howe...

The objective of this study was to explore the influence of pyrolysis temperature on the physicochemical properties of biochar synthesized from durian wood (Durio zibethinus) sawdust. Surface morphological features, including the porosity and BET surface area of biochars, provide appropriate dimensions for growing clusters of microorganisms with excellent water retention capacity in soil. Oxyge...

This research evaluated the hydrocarbon emission characteristics during pyrolysis of four carbonaceous additives that can be used in green sand foundries. These included a highly volatile bituminous coal, anthracite, lignite and cellulose. The samples were flash pyrolyzed in a Curie-point pyrolyzer at 920 C with a heating rate of about 3000 C/sec. This simulated the fast heating conditions that...

In the future, renewable energy technologies will have a significant role in catering to security concerns and safe environment. Among various sources available, biomass has high accessibility is considered carbon-neutral source. Pyrolysis technology thermo-chemical route for converting many useful products (biochar, bio-oil, combustible pyrolysis gases). The composition relative product yield ...