Study on Radon Adsorption of Activated Carbon in Low Temperature Condition

被引：0

作者：

Wang Y.-X. ^{[1
]}

Zeng Z. ^{[2
]}

Zhang L. ^{[3
]}

Guo L. ^{[1
]}

Guo Q.-J. ^{[1
]}

Liu J.-G. ^{[4
]}

机构：

[1] State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing

[2] Key Laboratory of Particle and Radiation Imaging of Ministry of Education, Department of Engineering Physics, Tsinghua University, Beijing

[3] State Key Laboratory of NBC Protection for Civilian, Beijing

[4] Clearance Department, Shenzhen Customs of People's Republic of China, Shenzhen

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2017年 / 51卷 / 11期

关键词：

Activated carbon; Dynamic adsorption coefficient; Radon; Temperature;

D O I：

10.7538/yzk.2017.51.11.2107

中图分类号：

学科分类号：

摘要：

Underground low-background laboratories have great demand in radon reduction in creating a low-radioactive background environment. A kind of principle radon reduction device was developed. KC-6 activated carbon was selected as the object of study. The dynamic adsorption coefficient of activated carbon to radon was measured at -50℃ to 25℃ using continuous air inlet method. The experimental results show that the dynamic adsorption coefficient of activated carbon has an exponential relationship with the absolute temperature in this temperature range. The decrease of temperature can significantly improve the radon adsorption ability of activated carbon. Under the temperature of -48℃, the activated carbon has a dynamic adsorption coefficient of 171.4 L/g, which is 20 times higher than that in room temperature condition. In addition, the adsorption heat of KC-6 activated carbon is calculated to be (20.5±1.7) kJ/mol. © 2017, Editorial Board of Atomic Energy Science and Technology. All right reserved.

引用

页码：2107 / 2112

页数：5

共 16 条

[1]

Wojcik M., Lalla H., Wlazlo W., Sensitivity of a low background proportional counter used in the GALLEX experiment to environmental <sup>222</sup>Rn, Nuclear Instruments & Methods in Physics Research, 356, 2-3, pp. 544-551, (1995)

[2]

Fukuda S., Fukuda Y., Hayakawa T., Et al., The super-Kamiokande detector, Nuclear Instruments & Methods in Physics Research, 501, 2-3, pp. 418-462, (2003)

[3]

Pocar A., Low background techniques and experimental challenges for Borexino and its nylon vessels, (2003)

[4]

Golightly J., Characterization of a carbon radon filter, and radon detection, (2008)

[5]

Cheng J., Wu S., Yue Q., Et al., A review of international underground laboratory developments, Physics, 40, 3, pp. 149-154, (2011)

[6]

Gaul W., Underhill D., Dynamic adsorption of radon by activated carbon, Health Physics, 88, 4, pp. 371-378, (2005)

[7]

Adamson A., Principles of Adsorption and Adsorption Processes, (1984)

[8]

Feng X., Xiao D., Qiu S., Et al., Research on high pressure adsorption of radon on activated carbon, Atomic Energy Science and Technology, 50, 4, pp. 763-768, (2016)

[9]

Feng S., Zhou C., Zhou G.-Q., Et al., Dynamic adsorption property of xenon on activated carbon and carbon molecular sieves, Journal of Nuclear and Radiochemistry, 32, 5, pp. 274-279, (2010)

[10]

Zikovsky L., Temperature dependence of adsorption coefficients of <sup>222</sup>Rn on activated charcoal determined by adsorption-desorption method, Health Physics, 80, 2, pp. 175-176, (2001)

← 1 2 →