A Review: Carbon Dioxide Capture: Biomass-Derived-Biochar and Its Applications

Abstract

The changes in global temperatures as a result of carbon dioxide (CO₂) emissions has suggested that cumulative CO₂ emissions will continue to increase over time. Many countries are looking for ways to reduce or alter the amount of CO₂ harming our environment; therefore, this review is a compilation of CO₂ adsorption on biomass-derived-biochar (BDB). This suggests that effective measures to mitigate the risk of dangerous climate change will need to limit cumulative emissions of CO₂. Further, if cumulative CO₂ emissions overshoot acceptable limits, it will become necessary to remove CO₂ from the air, that is, the so-called “negative emissions.” In this review, we discuss the definitions and classes of technologies for capturing CO₂ from the air and the application of biochar in the improvement of soil fertility. We also discuss the economic tradeoff between biochar and bio-oil, agricultural nutrient leaching, the novel magnetic property of biochar and its durability.

Keywords:

• Biomass derived biochar
• CO₂ capturing
• magnetic property of biochar
• soil fertility

Notes

^a The estimates for the temperature (°C) parameters in the bio-oil regressions. The parameters associated with temperature squared (°Csq.) correspond to β₂.

^b Coefficients associated with feedstock types (the four last rows of coefficients) represent the intercept for slow pyrolysis applied to each respective feedstock type. The constant is omitted to avoid perfect multicollinearity.

^c No observations are available for slow pyrolysis applied to other feedstock.

^a The estimates for the temperature (Temp(_C)) parameters in the bio-oil regressions correspond to b1 in equations (2a) and (2b), and appendix equations (A.3a), (A.3b), (A.4), (A.7) and (A.8). The parameters associated with temperature squared (Temp sq.) correspond to b2.

^b Coefficients associated with feedstock types (the four last rows of coefficients) represent the intercept for slow pyrolysis applied to each respective feedstock type. The constant is omitted to avoid perfect multicollinearity.

^c No observations are available for slow pyrolysis applied to Other feedstock.