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Physical adsorption of CO 2 in biomass at atmospheric pressure and ambient temperature
Environmental Chemistry Letters ( IF 15.0 ) Pub Date : 2020-04-29 , DOI: 10.1007/s10311-020-01011-y
Milad Asgarpour Khansary , Mohammad Ali Aroon , Saeed Shirazian

In the context of climate change, advanced methods for carbon dioxide (CO2) capture are needed. Organic biomass from living organisms, e.g., plants, is known to capture CO2 by photosynthetic assimilation, yet physical adsorption of CO2 onto biomass is poorly known. Here, we used molecular modeling of various biomass components to estimate the efficiency of CO2 capture by biomass. Results show that that CO2 adsorption is controlled by a ‘CO2–water–biomass’ network involving the sharing of common water molecules. Water interacts with CO2 through CO–OH bonds. A single water molecule participates in water–biomass interaction through either H–OH or HO–H bonds. CO2 adsorption is controlled by biomass moisture. Data show that 5–56 g of CO2 could be adsorbed per gram of biomass at 230–310 K and atmospheric pressure.



中文翻译:

大气压和环境温度下生物质中CO 2的物理吸附

在气候变化的背景下,(CO二氧化碳先进方法2需要)捕获。已知来自生物等生物的有机生物质通过光合同化来捕获CO 2,但对CO 2在生物质上的物理吸附却知之甚少。在这里,我们使用了各种生物质组分的分子模型来估计生物质捕获CO 2的效率。结果表明,CO 2的吸附受“ CO 2-水-生物质”网络的控制,该网络涉及共同的水分子的共享。水与CO 2相互作用通过CO-OH键。一个水分子通过H-OH或HO-H键参与水与生物质的相互作用。CO 2吸附受生物质水分控制。数据显示,在230-310 K和大气压下,每克生物量可吸附5-56 g CO 2

更新日期:2020-06-24
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