Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Environ Pollut. 2013 Aug;179:146-52. doi: 10.1016/j.envpol.2013.04.030. Epub 2013 May 13.
A simulated oxidation technique was used to examine the impacts of degradation on the surface properties of biochar and the potential implications of the changes in biochar properties were discussed. To simulate the short- and long-term environmental degradation, mild and harsh degradation were employed. Results showed that after mild degradation, the biochar samples showed significant reductions in surface area and pore volumes. After harsh degradation, the biochar samples revealed dramatic variations in their surface chemistry, surface area, pore volumes, morphology and adsorption properties. The results clearly indicate that changes of biochar surface properties were affected by biochar types and oxidative conditions. It is suggested that biochar surface properties are likely to be gradually altered during environmental exposure. This implies that these changes have potential effects for altering the physicochemical properties of biochar amended soils.
采用模拟氧化技术研究了降解对生物炭表面性质的影响，并讨论了生物炭性质变化的潜在影响。为了模拟短期和长期的环境降解，采用了温和降解和苛刻降解。结果表明，温和降解后，生物炭样品的比表面积和孔体积显著减少。苛刻降解后，生物炭样品的表面化学性质、比表面积、孔体积、形貌和吸附性能发生了剧烈变化。结果清楚地表明，生物炭表面性质的变化受生物炭类型和氧化条件的影响。因此，建议在环境暴露过程中，生物炭表面性质可能会逐渐发生变化。这意味着这些变化可能会改变添加生物炭的土壤的物理化学性质。
