期刊论文

Ding, D.

中文

环境科学学报

0253-2468

2017

37

10

3713-3719

10.13671/j.hjkxxb.2017.0132

(B3720132001):国防基础重点基金 (U1401231.11305087):国家自然科学基金 (13JJ6050):湖南省自然科学基金 (No.14B150):湖南省教育厅优秀青年项目 (B3720132001):Supported by the Defense Industrial Technology Development Program (U1401231.11305087):the National Natural Science Foundation of China (13JJ6050):the Natural Science Foundation of Hunan Province (14B150):the Outstanding Young Project in Hunan Province Department of Education

本校为第一且通讯机构

首先采用Visual MINTEQ 3.1软件模拟了不同pH及不同浓度的碳酸盐或磷酸盐溶液中不同形态铀所占的比例;随后根据模拟结果,配制了5种分别含有UO_2~(2+) 、(UO_2)_3(OH)_5~+ 、UO_2(OH)_3~-、UO_2(CO_3)_3~(4-)和UO_2PO_4~-的铀溶液;最后通过水培实验研究了满江红对这5种不同形态铀的吸附行为.结果表明,这5种不同形态铀对满江红的生长抑制率有显著差异,UO_2~(2+) 、(UO_2)_3(OH)_5~+ 、UO_2(OH)_3~-及UO_2(CO_3)_3~(4-)均能抑制满江红的生长,其中,UO_2~(2+)对满江红的生长抑制率最高,而UO_2PO_4~-则可以促进满江红的生长,但满江红对UO_2~(2+)和(UO_2)_3(OH)_5~+的吸附效率相对较高.当溶液中铀的浓度...

Visual MINTEQ 3.1 was used to estimate the proportions of different species of uranium in solutions under different pH and carbonate and phosphate concentrations. Then, based on the simulation results, 5 solutions containing UO2 2+, (UO2)3(OH)5 +, UO2(OH)3 -, UO2(CO3)3 4- and UO2PO4 -, respectively, were prepared. Finally, the adsorption behavior of the 5 different species of uranium by Azolla anabaena was studied through hydroponic experiments. The results show that the inhibition of A. anabaena growth rates by different species of uranium wer...