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The physiological response of Arundo donax and characteristics of anodic bacterial community in BE-CW systems: Effects of the applied voltage
Xiao, Enrong1; Zhou, Yin1,2; Xu, Dan3; Lu, Rui1,2; Chen, Yuhua1,2; Zhou, Qiaohong1; Wu, Zhenbin1
2020-01-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume380Issue:1Pages:12
Abstract

The performance of bioelectrochemically assisted constructed wetland systems planted with Arundo donax were evaluated at applied voltages of 1, 2, 3 and 5 V. The RGR and Proline (Pro) results implied a positive response at the proper applied voltage. In the 3-V group, the RGR sharply climbed to a maximum over two stages, and the Pro reached a higher level of 256.25 mu g/g at the end of the first stage without an additional organic carbon source. This result indicated that A. donax was attempting to adapt the 3-V stress via physiological self-regulation and the growth was nearly unaffected. However, in the 5-V group, the great increase in Pro and withering of the aboveground A. donax showed that the voltage stress had become lethal and the plant was not able to endure it through physiological regulation. In addition, Anodic microbial community compositions accumulating on graphite felts were analyzed via high-throughput sequencing. Results showed that there were two clear clusters at different applied voltages. One cluster was assembled from the anodic region of the 0-V and 1-V groups, and the other was collected from the 2-V and 3-V samples. At the phylum level, Proteobacteria, Firmicutes and Bacteroidetes were the most common phyla among the samples. However, at the genus level, the dominant genera varied with the applied voltage. The relative abundance of Desulfovibrio increased with increased applied voltage. The highest total nitrogen removal rate in the 2-V group was closely related to the high abundance of the Acinetobacter genus. Moreover, Exiguobacterium became dominant only in the 5-V sample, suggesting that this genus strongly depended on the interactive environment of exudes from A. donax and applied voltage.

KeywordArundo donax Constructed wetland Bioelectrochemical Physiological response Anodic bacterial community Applied voltage
DOI10.1016/j.cej.2019.122604
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000494815600148
WOS KeywordMICROBIAL FUEL-CELL ; CONSTRUCTED WETLAND SYSTEM ; AUTOTROPHIC DENITRIFICATION ; ELECTROCHEMICAL SYSTEMS ; ELECTRICITY PRODUCTION ; NITROGEN REMOVAL ; FRESH-WATER ; PERFORMANCE ; DIVERSITY ; BIOFILM
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35391
Collection水环境工程研究中心_期刊论文
Corresponding AuthorXiao, Enrong
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.East China Univ Technol, Sch Water Resources & Environm Engn, Nanchang 330013, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Enrong,Zhou, Yin,Xu, Dan,et al. The physiological response of Arundo donax and characteristics of anodic bacterial community in BE-CW systems: Effects of the applied voltage[J]. CHEMICAL ENGINEERING JOURNAL,2020,380(1):12.
APA Xiao, Enrong.,Zhou, Yin.,Xu, Dan.,Lu, Rui.,Chen, Yuhua.,...&Wu, Zhenbin.(2020).The physiological response of Arundo donax and characteristics of anodic bacterial community in BE-CW systems: Effects of the applied voltage.CHEMICAL ENGINEERING JOURNAL,380(1),12.
MLA Xiao, Enrong,et al."The physiological response of Arundo donax and characteristics of anodic bacterial community in BE-CW systems: Effects of the applied voltage".CHEMICAL ENGINEERING JOURNAL 380.1(2020):12.
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