Coupling of bio-PRB and enclosed in-well aeration system for remediation of nitrobenzene and aniline in groundwater
Coupling of bio-PRB and enclosed in-well aeration system for remediation of nitrobenzene and aniline in groundwater
复制标题
生物PRB与封闭井内曝气系统耦合修复地下水中硝基苯和苯胺
DOI：
10.1007/s11356-016-6206-3
复制
发表时间：
2016-02
影响因子：
5.8
通讯作者：
Peng Liu
中科院分区：
文献类型：
--
作者：
Na Liu;Feng Ding;Liu Wang;Peng Liu
构建了一个实验室规模的生物可渗透反应屏障（生物PRB），并与封闭式井内曝气系统相结合，用于处理地下水中的硝基苯（NB）和苯胺（AN）。首先进行了批量式实验以评估其效果。
A laboratory-scale bio-permeable reactive barrier (bio-PRB) was constructed and combined with enclosed in-well aeration system to treat nitrobenzene (NB) and aniline (AN) in groundwater. Batch-style experiments were first conducted to evaluate the effectiveness of NB and AN degradation, using suspension (free cells) of degrading consortium and immobilized consortium by a mixture of perlite and peat. The NB and AN were completely degraded in <3 days using immobilized consortium, while 3–5 days were required using free cells. The O2supply efficiency of an enclosed in-well aeration system was assessed in a box filled with perlite and peat. Dissolved O2(DO) concentrations increased to 8–12 mg L−1in 12 h for sampling ports within 12 cm of the aeration well. A diffusion coefficient as 33.5 cm2s−1was obtained. The DO concentration was >4 mg L−1when the aeration system was applied into the bio-PRB system. The NB and AN were effectively removed when the aeration system was functional in the bio-PRB. The removal efficiency decreased when the aeration system malfunctioned for 20 days, thus indicating that DO was an important factor for the degradation of NB and AN. The regain of NB and AN removal after the malfunction indicates the robustness of degradation consortium. No original organics and new formed by-products were observed in the effluent. The results indicate that NB and AN in groundwater can be completely mineralized in a bio-PRB equipped with enclosed in-well aeration system and filled with perlite and peat attached with degrading consortium.
登录
查看更多内容
影响因子：
9.9
作者：
Dongfeng Zhao;Chunshuang Liu;Yunbo Zhang;Qiyou Liu
通讯作者：
Dongfeng Zhao;Chunshuang Liu;Yunbo Zhang;Qiyou Liu
影响因子：
15.1
作者：
J. Jeyasingh;V. Somasundaram;L. Philip;S. M. Bhallamudi
通讯作者：
J. Jeyasingh;V. Somasundaram;L. Philip;S. M. Bhallamudi
影响因子：
3.6
作者：
W. Hunter;D. Shaner
通讯作者：
W. Hunter;D. Shaner
影响因子：
5.3
作者：
Miguel Rodriguez;V. Timokhin;F. Michl;S. Contreras;J. Giménez;S. Esplugas
通讯作者：
Miguel Rodriguez;V. Timokhin;F. Michl;S. Contreras;J. Giménez;S. Esplugas
影响因子：
15.1
作者：
Yin, Weizhao;Wu, Jinhua;Yang, Bo
通讯作者：
Yang, Bo