当前位置:
X-MOL 学术
›
Sci. Total Environ.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Iron-montmorillonite treated corn straw biochar: Interfacial chemical behavior and stability.
Science of the Total Environment ( IF 8.2 ) Pub Date : 2019-10-31 , DOI: 10.1016/j.scitotenv.2019.134773
Jing Lu 1 , Yaqian Yang 1 , Pengxiao Liu 1 , Ying Li 1 , Fei Huang 2 , Liqin Zeng 1 , Yuze Liang 1 , Siyuan Li 1 , Bin Hou 1
Science of the Total Environment ( IF 8.2 ) Pub Date : 2019-10-31 , DOI: 10.1016/j.scitotenv.2019.134773
Jing Lu 1 , Yaqian Yang 1 , Pengxiao Liu 1 , Ying Li 1 , Fei Huang 2 , Liqin Zeng 1 , Yuze Liang 1 , Siyuan Li 1 , Bin Hou 1
Affiliation
![]() |
In this study, corn straw biomass was co-pyrolyzed with a clay mineral (montmorillonite) in the presence of iron-bearing materials (FeCl3, magnetite and iron acetylacetone) and the prepared iron-montmorillonite biochars were characterized for their interfacial behavior. The results showed that, by adding iron to the pyrolysis process, organometallic complexes such as Fe-O-C were generated on the surface of biochars. All the iron-montmorillonite biochars were also shown to enhance the oxidation resistance likely by the increased relative contents of CO and COOH from 0% and 3.7% to 6.5-8.4% and 5.5-6.3%, respectively, compared with the iron-absent biochar. The measured carbon recalcitrance index (R50, bicohar) of iron-montmorillonite biochars in thermogravimetric analysis (TGA) also increased from 46.9% to 48.6-56.9%. Among the three types of added iron materials, magnetite showed the best performance in improving biochar stability. The study indicated that, when added together, montmorillonite and iron were effective in improving the stability of biochar, which displays an important environmental significance of carbon sequestration.
中文翻译:
铁-蒙脱石处理过的玉米秸秆生物炭:界面化学行为和稳定性。
在这项研究中,在含铁材料(FeCl3,磁铁矿和乙酰丙酮铁)的存在下,将玉米秸秆生物质与粘土矿物(蒙脱石)共热解,并对其制备的铁-蒙脱石生物炭进行了界面行为表征。结果表明,通过在热解过程中添加铁,在生物炭表面生成了诸如Fe-OC的有机金属配合物。与缺铁生物炭相比,所有铁-蒙脱土生物炭还显示出可能通过提高CO和COOH相对含量分别从0%和3.7%至6.5-8.4%和5.5-6.3%来增强抗氧化性。 。在热重分析(TGA)中测得的铁-蒙脱石生物炭的碳顽固指数(R50,bicohar)也从46.9%增加到48.6-56.9%。在三种添加铁材料中,磁铁矿在改善生物炭稳定性方面表现出最好的性能。研究表明,将蒙脱石和铁混合使用可有效提高生物炭的稳定性,这显示出固碳的重要环境意义。
更新日期:2019-11-01
中文翻译:

铁-蒙脱石处理过的玉米秸秆生物炭:界面化学行为和稳定性。
在这项研究中,在含铁材料(FeCl3,磁铁矿和乙酰丙酮铁)的存在下,将玉米秸秆生物质与粘土矿物(蒙脱石)共热解,并对其制备的铁-蒙脱石生物炭进行了界面行为表征。结果表明,通过在热解过程中添加铁,在生物炭表面生成了诸如Fe-OC的有机金属配合物。与缺铁生物炭相比,所有铁-蒙脱土生物炭还显示出可能通过提高CO和COOH相对含量分别从0%和3.7%至6.5-8.4%和5.5-6.3%来增强抗氧化性。 。在热重分析(TGA)中测得的铁-蒙脱石生物炭的碳顽固指数(R50,bicohar)也从46.9%增加到48.6-56.9%。在三种添加铁材料中,磁铁矿在改善生物炭稳定性方面表现出最好的性能。研究表明,将蒙脱石和铁混合使用可有效提高生物炭的稳定性,这显示出固碳的重要环境意义。