Effects of electroconductive materials on treatment performance and microbial community structure in biofilter systems with silicone tubings

Jingjing Du; Yulong Niu; Haiming Wu; Dennis Konnerup; Shubiao Wu; Carlos A. Ramírez-Vargas; Yanqin Yang; Hans Brix; Carlos A. Arias

doi:10.1016/j.chemosphere.2022.135828

Effects of electroconductive materials on treatment performance and microbial community structure in biofilter systems with silicone tubings

Jingjing Du^*, Yulong Niu, Haiming Wu, Dennis Konnerup, Shubiao Wu, Carlos A. Ramírez-Vargas, Yanqin Yang, Hans Brix, Carlos A. Arias

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

5 Citations (Scopus)

Abstract

Biofilter systems coupling with microbial electrochemical technology can enhance the removal performance of pollutants. In this study, two types of coke (PK-A and PK-LSN) were used as electroconductive substrates in biofilter systems with silicone tubings. The results showed that the silicone tubings were beneficial for removing NH₄⁺-N. The PK-A systems reached removal efficiencies up to 83.5–85.3% for NH₄⁺-N without aeration. Compared to gravel systems, significantly higher removal efficiencies of NO₃⁻-N (84.8–95.4%) were obtained in coke systems, and better removal of PO₄^3--P (91.9–95.7%) was also simultaneously achieved in PK-A systems. Redundancy analysis (RDA) indicated that the better performances of coke systems rely on the functions of both electroactive (Trichococcus and Sulfurovum) and non-electroactive bacteria (Clostridium_sensu_stricto_1, Propionicicella, and Acinetobacter). These findings highlight the important contribution of silicone tubings to oxygen supply and provide useful guidance for the application of coke in composite matrix systems.

Original language	English
Article number	135828
Journal	Chemosphere
Volume	307
Issue	2
Number of pages	8
ISSN	0045-6535
DOIs	https://doi.org/10.1016/j.chemosphere.2022.135828
Publication status	Published - Nov 2022

Keywords

Bacterial community
Biofilter system
Microbial electrochemical technology
Removal efficiency
Silicone tubings

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10.1016/j.chemosphere.2022.135828

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title = "Effects of electroconductive materials on treatment performance and microbial community structure in biofilter systems with silicone tubings",

abstract = "Biofilter systems coupling with microbial electrochemical technology can enhance the removal performance of pollutants. In this study, two types of coke (PK-A and PK-LSN) were used as electroconductive substrates in biofilter systems with silicone tubings. The results showed that the silicone tubings were beneficial for removing NH4+-N. The PK-A systems reached removal efficiencies up to 83.5–85.3% for NH4+-N without aeration. Compared to gravel systems, significantly higher removal efficiencies of NO3−-N (84.8–95.4%) were obtained in coke systems, and better removal of PO43--P (91.9–95.7%) was also simultaneously achieved in PK-A systems. Redundancy analysis (RDA) indicated that the better performances of coke systems rely on the functions of both electroactive (Trichococcus and Sulfurovum) and non-electroactive bacteria (Clostridium_sensu_stricto_1, Propionicicella, and Acinetobacter). These findings highlight the important contribution of silicone tubings to oxygen supply and provide useful guidance for the application of coke in composite matrix systems.",

keywords = "Bacterial community, Biofilter system, Microbial electrochemical technology, Removal efficiency, Silicone tubings",

author = "Jingjing Du and Yulong Niu and Haiming Wu and Dennis Konnerup and Shubiao Wu and Ram{\'i}rez-Vargas, {Carlos A.} and Yanqin Yang and Hans Brix and Arias, {Carlos A.}",

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month = nov,

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Effects of electroconductive materials on treatment performance and microbial community structure in biofilter systems with silicone tubings. / Du, Jingjing; Niu, Yulong; Wu, Haiming et al.
In: Chemosphere, Vol. 307, No. 2, 135828, 11.2022.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Effects of electroconductive materials on treatment performance and microbial community structure in biofilter systems with silicone tubings

AU - Du, Jingjing

AU - Niu, Yulong

AU - Wu, Haiming

AU - Konnerup, Dennis

AU - Wu, Shubiao

AU - Ramírez-Vargas, Carlos A.

AU - Yang, Yanqin

AU - Brix, Hans

AU - Arias, Carlos A.

PY - 2022/11

Y1 - 2022/11

N2 - Biofilter systems coupling with microbial electrochemical technology can enhance the removal performance of pollutants. In this study, two types of coke (PK-A and PK-LSN) were used as electroconductive substrates in biofilter systems with silicone tubings. The results showed that the silicone tubings were beneficial for removing NH4+-N. The PK-A systems reached removal efficiencies up to 83.5–85.3% for NH4+-N without aeration. Compared to gravel systems, significantly higher removal efficiencies of NO3−-N (84.8–95.4%) were obtained in coke systems, and better removal of PO43--P (91.9–95.7%) was also simultaneously achieved in PK-A systems. Redundancy analysis (RDA) indicated that the better performances of coke systems rely on the functions of both electroactive (Trichococcus and Sulfurovum) and non-electroactive bacteria (Clostridium_sensu_stricto_1, Propionicicella, and Acinetobacter). These findings highlight the important contribution of silicone tubings to oxygen supply and provide useful guidance for the application of coke in composite matrix systems.

AB - Biofilter systems coupling with microbial electrochemical technology can enhance the removal performance of pollutants. In this study, two types of coke (PK-A and PK-LSN) were used as electroconductive substrates in biofilter systems with silicone tubings. The results showed that the silicone tubings were beneficial for removing NH4+-N. The PK-A systems reached removal efficiencies up to 83.5–85.3% for NH4+-N without aeration. Compared to gravel systems, significantly higher removal efficiencies of NO3−-N (84.8–95.4%) were obtained in coke systems, and better removal of PO43--P (91.9–95.7%) was also simultaneously achieved in PK-A systems. Redundancy analysis (RDA) indicated that the better performances of coke systems rely on the functions of both electroactive (Trichococcus and Sulfurovum) and non-electroactive bacteria (Clostridium_sensu_stricto_1, Propionicicella, and Acinetobacter). These findings highlight the important contribution of silicone tubings to oxygen supply and provide useful guidance for the application of coke in composite matrix systems.

KW - Bacterial community

KW - Biofilter system

KW - Microbial electrochemical technology

KW - Removal efficiency

KW - Silicone tubings

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Effects of electroconductive materials on treatment performance and microbial community structure in biofilter systems with silicone tubings

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