Bamboo (Acidosasa longiligula) shoot shell biochar: its potential application to isolation of uranium(VI) from aqueous solution

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 316; no. 1; pp. 349 - 362
• Main Authors: Hu, Hui, Zhang, Xin, Wang, Tian, Sun, Longli, Wu, Huixiong, Chen, Xiaohui
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.04.2018; Springer Nature B.V
• Subjects: Adsorbents; Adsorption; Aqueous solutions; Bamboo; Chemistry; Chemistry and Materials Science; Desorption; Diagnostic Radiology; Hadrons; Heavy Ions; Inorganic Chemistry; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Uranium; shoot shell; Adsorption; Biochar; Bamboo; Uranium(VI)
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-018-5731-6

The adsorption of uranium(VI) onto bamboo ( Acidosasa longiligula ) shoot shell biochar (ASBC) was investigated in batch experiments and the adsorbent was characterized by two-dimensional infrared correlation spectroscopy. The adsorption equilibrium data followed the Langmuir isotherm with maximum adsorption capacity of 32.3 mg g −1 at 298 K. The biochar exhibited a high selectivity for uranium(VI) against Na + ions. Desorption rate of higher than 90% was obtained over three adsorption–desorption cycles. The adsorption mechanisms of uranium(VI) by ASBC involved surface complexation and cation–π interaction. Results suggested that ASBC was a low-cost and potential adsorbent for uranium(VI) isolation from aqueous solution.