期刊论文

Uranium Removal From Water by Pistia Stratiotes L.and Eichhornia Crassipes

Ding, D.-X.

中文

核化学与放射化学

0253-9950

2015

37

4

243-249

10.7538/hhx.2015.37.04.0243

国家重点基础研究发展计划(973计划,2014CB846003) 国家自然科学基金项目(No.91126013) 国家自然科学基金委-中国工程物理研究院联合基金项目(No.11176028) 核废物与环境安全国防重点学科实验室开放基金项目(No.12zxnp02)

本校为通讯机构

通过室内水培和静态吸附实验,研究了铀矿区土著水生植物大薸(Pistia stratiotes L.)和凤眼莲(Eichhornia crassipes)对真实铀矿坑水和不同铀浓度水中铀的去除能力.结果表明:干体大薸和凤眼莲根系以1 g/L(干重)的比例投加至铀矿坑水(ρ0 (U)=1.93 mg/L,pH0=7.83)中,1h后,矿坑水中铀去除率分别达58％和48％,5d后铀质量浓度降至0.3 mg/L以下;活体大薸和凤眼莲对水体中铀的去除作用主要集中在第1d内,单株鲜重约为400 g左右的活体大薸在10 min内可以将1 Lρ0(U) =0.045～4.5 mg/L的水体中铀质量浓度降至30 μg/L以下,符合世界卫生组织建议的饮用水标准;单株鲜重约为400 g左右的活体凤眼莲在1d内可以将...

Laboratory hydroponic and static adsorption experiments were conducted on the uranium removal by Pistia stratiotes L. and Eichhornia crassipes from the real uranium mine pit water and the solution which contained different initial uranium concentration. The removal rate of uranium could reach 58% and 48% by 1 g/L of the dried root biomass of Pistia stratiotes L. and Eichhornia crassipes from the real uranium mine pit water (the initial uranium mass concentration was 1.93 mg/L and the initial pH value was 7.83) in 1 h, respectively. After 5 d, t...