Caesium and strontium adsorption ability of activated bamboo charcoal
by Shingo Hayakawa; Soichiro Matsubara; Yusuke Sumi; Syo Yamamoto; Norihisa Kawamura; Toru Nonami
International Journal of Nanotechnology (IJNT), Vol. 15, No. 8/9/10, 2018

Abstract: We developed an activated charcoal by creating bamboo charcoal that was carbonised at a temperature between 400 to 1000°C and then kept it at a temperature of 270°C for 2 h. One gram of activated charcoal was added to 100 mL of aqueous caesium of 2.67 × 10^-2 mmol/L and 100 mL of strontium aqueous solution, and was stirred for 1 h. The caesium adsorption amount of bamboo charcoal, which was carbonised at 400°C, increased from 70.0% to 88.9%. In addition, the amount of strontium absorbed increased from 76.5% to 89.0 % because of the activation. The pH of the activated charcoal increased along with an increase in the carbonation temperature. The pH of the activated charcoal that was carbonated at 400°C was 5.2, and that for the activated charcoal carbonated at 1000°C was 9.74. We also determined that the pH of activated charcoal and the amount of caesium absorbed had a strong correlation, and the correlation coefficient was 0.987. The caesium absorption capacity of bamboo charcoal is said to be related to the acid functionality of the surface rather than the size of the surface area. Therefore, it was considered that generation of a new acidic functional group was a factor that improved adsorption ability.

Online publication date: Fri, 22-Mar-2019

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanotechnology (IJNT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com