Category Archives: BIOENERGY. RESEARCH:. ADVANCES AND. APPLICATIONS

Sorption of Plant Nutrients and Other Pollutants

The potential benefits of biochar to improving soil health through nutrient addition, and consequent im­provements in fertilizer use efficiency have been well recognized through glasshouse and field trials (Sohi et al., 2010; Verheijen et al., 2010). These studies have shown that biochar and biochar-amended soil help retain plant nutrients and this is one of the means by which biochar application […]

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Can Biochar Be a Cost-effective Fertilizer Substitute?

An analysis by McHenry (2012a, b) quantified the po­tential of using biochar as a soil amendment to displace annual applications of single superphosphate (SSP) (0% N, 8.8% P, 0% K, 11% S) in wheat cropping systems in WA. The analysis assumed two biochar applications over a 15-year period, applied in year zero, and year eight. The analysis ignored all production […]

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Organosolv Pretreatment

Take an organic or aqueous organic solvent such as formic acid, acetic acid, methanol, ethanol, acetone, ethylene glycol, oxalic acid, triethylene glycol or tetrahy — drofurfuryl alcohol and combine it with an inorganic acid catalyst such as hydrochloric acid or sulfuric acid and one can eliminate the internal lignin and hemicellu — lose bonds. This is known as an organosolv […]

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Soil Greenhouse Gas Emissions

In addition to the potential of biochar to partially offset anthropogenic C emissions through C sequestra­tion, biochar has been observed to inhibit the release of GHGs from soil, thereby reducing net emissions of GHGs as a side effect of C sequestration. Decreased car­bon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emissions from soils have been observed following biochar applications […]

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Can Biochar Be a Cost-Effective Approach to Increase Grain Crop Primary Productivity?

For comparison, a further analysis by McHenry (2012a, b) was undertaken of the value of applying bio­char at 1 t/ha with the full rate of SSP as described above. This analysis was undertaken to explore the rela­tive impact of using biochar to increase yield, as opposed to increasing fertilizer use efficiency. The anal­ysis assumed that using the full rate of […]

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Oxidation Pretreatment

Oxidation is a pretreatment option whereby an oxi­dizing agent, such as hydrogen peroxide or peracetic acid, is applied to LB. The result is the removal of hemi — cellulose and lignin and thus, an increased accessibility to cellulose to enzymatic hydrolysis. This result is the culmination of several reactions: electrophilic substitu­tion, displacement of side chains, cleavage of alkyl aryl ether […]

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THERMOCHEMICAL CONVERSION

The process of converting LB to products using pri­marily heat as the engine of conversion is thermochem­ical conversion. Thermochemical processing appears more promising than bioconversion of the lignin frac­tion of the LB in that it serves as a source of process energy and the coproducts have benefits in a life-cycle context; however, it has a detrimental effect on enzy­matic hydrolysis […]

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