Title :
Study on the removal of Pb2+ in water by γ-irradiation
Author :
Yuan, Shoujun ; Wu, Lei ; Zheng, Zheng
Author_Institution :
Sch. of Civil Eng., Hefei Univ. of Technol. Hefei, Hefei, China
Abstract :
Radiation-induced removal of Pb2+ ( 0.1 mmol-L-1 ) in aqueous solutions by γ-irradiation was studied in this paper. The results showed that the removal of Pb2+ by γ-irradiation was first-order reaction. Several factors which might affect the removal efficiency of Pb2+ were examed. Dissolved oxygen (DO) in water restrained the removal of Pb2+. Sodium carbonate (Na2CO3) was added into the solution as relatively non-toxic hydroxyl radical scavenger. And the removal efficiency of Pb2+ was enhanced after the addition of 0.1 mmol/L Na2CO3. The removal efficiency of Pb2+ decreased in the presence of organic matters (such as EDTA). And increasing irradiation dosage was a better way to weaken the impact of organic matters to the removal of Pb2+ by γ-irradiation.
Keywords :
gamma-ray effects; organic compounds; water treatment; γ-irradiation; dissolved oxygen; first order reaction; irradiation dosage; nontoxic hydroxyl radical scavenger; organic matters; radiation induced removal efficiency; sodium carbonate; Contamination; Kinetic theory; Lead; Radiation effects; Silver; Wastewater; Water pollution; irradiation; kinetics; radical; removal of Pb2+;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988639
