Details

Autor(en) / Beteiligte

• Ji, Debin
• Wang, Yue
• Liu, Yao
• Hao, Shaoxian
• Yang, Jialiang
• Yan, Yongde
• Lu, Congying
• Guan, Shuxia
• Gao, Qinghe
• Wu, Hongjun

Titel

Efficient capture of uranium by a hydroxyapatite-modified polyethyleneimine@carbon nanotube composite from radioactive nuclear waste

Ist Teil von

• Dalton transactions : an international journal of inorganic chemistry, 2023-07, Vol.52 (29), p.1136-1144

Ort / Verlag

England: Royal Society of Chemistry

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The toxicity and radioactivity of uranium (U)-containing wastewater pose a serious threat to the environment of humans, animals, and plants. It is necessary to remove U from contaminated wastewater. With high adsorption capacity and fast adsorption rate, a composite CNT-P/HAP, which comprises carbon nanotubes (CNT) modified with polyethyleneimine (PEI), was functionalized further by hydroxyapatite (HAP) using the hydrothermal method. Adsorption experiments indicated that the optimal performance for CNT-P/HAP was 1330.64 mg g −1 of adsorption capacity and 40 min of adsorption equilibrium at a pH of 3. In addition, the adsorption capacity of CNT-P/HAP was over 2 times that of HAP at a pH of 7. The synergistic effect in both synthesis and adsorption gave CNT-P/HAP an excellent adsorption capacity for U. The XRD and FT-IR analysis indicated that the adsorption mechanism of CNT-P/HAP for U is decided by the pH of the solution. CNT-P/HAP could be used in multiple conditions to remediate U-containing wastewater. Adsorption process of uranyl ions by carbon nanotube composites.