Effects of sulfate on simultaneous nitrate and selenate removal in a hydrogen-based membrane biofilm reactor for groundwater treatment: Performance and biofilm microbial ecology.
Effects of sulfate on simultaneous nitrate and selenate removal in a hydrogen-based membrane biofilm reactor for groundwater treatment: Performance and biofilm microbial ecology.
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硫酸盐对地下水处理氢基膜生物膜反应器中同时去除硝酸盐和硒酸盐的影响：性能和生物膜微生物生态学。
DOI：
10.1016/j.chemosphere.2018.07.092
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发表时间：
2018-07
期刊：
影响因子：
8.8
通讯作者：
Xia Siqing
中科院分区：
文献类型：
--
作者：
Zhou Lijie;Xu Xiaoyin;Xia Siqing
通过性能和生物膜微生物生态学，确定了硫酸盐对用于地下水处理的氢基膜生物膜反应器（MBfR）中同时去除硝酸盐和硒酸盐的影响。在整个操作过程中，即使使用50mgmL−1硫酸盐，MBfR也几乎100%去除硝化。此外，添加硫酸盐后，硒酸盐的降解率从95%增加到约100%，表明硫酸盐对硝酸盐的降解没有明显影响，甚至部分促进了硒酸盐的去除。短期硫酸盐效应实验进一步表明，吉布斯还原自由能（大部分）和非生物硫化物氧化（特别是硫酸盐和硒酸盐之间）有助于硫酸盐的降解性能。微生物生态学表明，高比例的噬氢菌（≥75%）是稳定有效的硝酸盐降解的贡献者之一。化学异养（比率>0.3）和暗氢氧化（比率>0.3）是MBfR中生物膜的主要功能特征，硫酸盐导致生物膜中硫酸盐呼吸和硫化合物呼吸的特征。另外，生物膜微生物生态中没有发现专门的硒酸降解细菌，硒酸降解依赖于Hydrogenophaga（添加硫酸盐占生态百分比75%）和脱硫弧菌科（添加硫酸盐占生态百分比4%）。但由于硫酸盐超载，脱硫弧菌科先于硫酸盐降解提供能量，从而抑制了硒酸盐的去除。
Effects of sulfate on simultaneous nitrate and selenate removal in a hydrogen-based membrane biofilm reactor (MBfR) for groundwater treatment was identified with performance and biofilm microbial ecology. In whole operation, MBfR had almost 100% removal of nitration even with 50 mg mL−1sulfate. Moreover, selenate degradation increased from 95% to approximate 100% with sulfate addition, indicating that sulfate had no obvious effects on nitrate degradation, and even partly promoted selenate removal. Short-term sulfate effect experiment further showed that Gibbs free energy of reduction (majority) and abiotic sulfide oxidation (especially between sulfate and selenate) contributed to degradable performance with sulfate. Microbial ecology showed that high percentage ofHydrogenophaga (≥75%) was one of the contributors for the stable and efficient nitrate degradation. Chemoheterotrophy (ratio>0.3) and dark hydrogen oxidation (ratio>0.3) were the majority of functional profile for biofilm in MBfR, and sulfate led to profiles of sulfate respiration and respiration of sulfur compounds in biofilm. Additionally, no special bacteria for selenate degradation was identified in biofilm microbial ecology, and selenate degradation was relied onHydrogenophaga(75% of ecology percentage with sulfate addition) andDesulfovibrionaceae(4% of ecology percentage with sulfate addition). But with overloading sulfate,Desulfovibrionaceaewas prior to sulfate degradation for energy supply and thus inhibited selenate removal.
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影响因子：
8.8
作者：
G. Subedi;Jon Taylor;Ido Hatam;S. Baldwin
通讯作者：
G. Subedi;Jon Taylor;Ido Hatam;S. Baldwin
使用膜生物膜反应器同时生物还原多种氧化污染物
影响因子：
3.1
作者：
Li Haixiang;Lin Hua;Xu Xiaoyin;Jiang Minmin;Chang Chein-Chi;Xia Siqing
通讯作者：
Xia Siqing
影响因子：
13.6
作者：
S. Xia;Hai-xiang Li;Zhiqiang Zhang;Yanhao Zhang;Xin Yang;R. Jia;K. Xie;Xiaotian Xu
通讯作者：
S. Xia;Hai-xiang Li;Zhiqiang Zhang;Yanhao Zhang;Xin Yang;R. Jia;K. Xie;Xiaotian Xu
影响因子：
11.4
作者：
L. Winkel;C. Annette Johnson;M. Lenz;T. Grundl;O. X. Leupin;M. Amini;L. Charlet
通讯作者：
L. Winkel;C. Annette Johnson;M. Lenz;T. Grundl;O. X. Leupin;M. Amini;L. Charlet
影响因子：
11.4
作者：
He-ping Zhao;Steven W. van Ginkel;Youneng Tang;Dae-Wook Kang;B. Rittmann;R. Krajmalnik-Brown
通讯作者：
He-ping Zhao;Steven W. van Ginkel;Youneng Tang;Dae-Wook Kang;B. Rittmann;R. Krajmalnik-Brown