Characterization of Typical Biomass Ashes and Study on Their Potential of CO2 Fixation
Characterization of Typical Biomass Ashes and Study on Their Potential of CO2 Fixation
复制标题
典型生物质灰烬的表征及其固定 CO2 潜力的研究
DOI：
10.1021/ef300781e
复制
发表时间：
2012-09-01
期刊：
影响因子：
5.3
通讯作者：
Wang, Peng
中科院分区：
文献类型：
--
作者：
Wang, Wenlong;Zheng, Yanli;Wang, Peng
随着生物质资源利用的日益增多，生物质灰渣的回收或处置应受到更多的关注。本文提出了通过碳酸盐矿物的重碳化反应来研究生物质灰固定CO2的可能性。对中国北部农村的4种典型生物质资源--玉米秆、麦秆、棉枝和杨树进行了取样。通过联合采用X射线衍射、X射线荧光和热重分析三种分析工具，对其灰烬的化学和矿物成分进行了彻底的表征。结果表明，麦秆、玉米秆灰渣中碳酸钙、碳酸钾、碳酸镁等碳酸盐的含量可达25-40%，棉枝、杨树灰渣中碳酸盐含量约为70%。高碳酸盐含量使它们在理论上有很好的潜力通过重碳化反应吸收二氧化碳。将二氧化碳鼓泡到由骨灰制成的溶液中的实验表明，65-9...
With the increasing use of biomass resources, the recycling or disposal of biomass ash should be given more attention. An idea is put forward in this paper to study the possibility of CO2 fixation with biomass ash through the bicarbonation reactions of carbonate minerals. Four typical biomass resources, corn stalk, wheat stalk, cotton branch, and poplar, in a rural area of northern China, were sampled. Their ashes were thoroughly characterized for their chemical and mineral compositions through the joint adoption of three analysis tools, X-ray diffraction, X-ray fluorescence, and thermogravimetric analysis. It was found that the percentages of carbonates, such as CaCO3, K2CO3, MgCO3, etc., could amount to 25–40% by weight in the ashes of wheat stalk and corn stalk and to about 70% in the cotton branch and poplar. The high carbonate contents give them a theoretically good potential to absorb CO2 through bicarbonation reactions. Experiments of bubbling CO2 into solutions made from the ashes showed that 65–9...