期刊论文

Experimental study on U(Ⅵ) bioreduction by incubated sulfate reducing bacteria sediment in groundwater

Ding, Dexin(dingdxzzz@163.com)

中文

化工学报

0438-1157

2018

69

8

3619-3625

10.11949/j.issn.0438-1157.20180219

11775106:国家自然科学基金 U1401231:国家自然科学基金 51274124:国家自然科学基金

本校为第一机构

通过添加富集得到的含有丰富的硫酸盐还原菌的沉积物到沉积物-地下水微模型中,并添加乙醇作为碳源,分别与接种硫酸盐还原菌并添加碳源组和仅添加碳源组相比较,研究富集的硫酸盐还原菌沉积物对地下水中U(Ⅵ)还原的作用。结果表明,添加硫酸盐还原菌沉积物组、接种硫酸盐还原菌组和对照组中的铀浓度分别在第19、22和28 d下降至GB 23727—2009规定的0.05 mg·L~(–1)排放标准以下。各组沉积物中具有还原U(Ⅵ)功能的微生物群落的多样性差异较小。添加硫酸盐还原菌沉积物组、接种硫酸盐还原菌组和对照组的沉积物中具有还原U(Ⅵ)功能的微生物群落的丰度分别为35.3%、32.5%和13.1%。由此可见,富集的硫酸...

To study how the incubated sulfate reducing bacteria (SRB) sediment affects U()bioreduction, the sediment together with ethanol was added into the sediment-groundwater microcosms, which were compared with microcosms amended withboth pure SRB and ethanol and with ethanol only. The results indicated that uranium concentrations of the microcosms amended withthe incubated SRB sediment together with ethanol, the pure SRB together with ethanol, and ethanol decreased below 0.05 mg•L-1 (GB 23727-2009) at day 19, 22 and 28, respectively. The diversity ...