Selenium Removal by Constructed Wetlands:  Quantitative Importance of Biological Volatilization in the Treatment of Selenium-Laden Agricultural Drainage Water

2003 ◽  
Vol 37 (3) ◽  
pp. 606-615 ◽  
Author(s):  
Zhi-Qing Lin ◽  
Norman Terry
Keyword(s):  
Constructed Wetlands ◽  
Drainage Water ◽  
Agricultural Drainage ◽  
Agricultural Drainage Water ◽  
Selenium Removal ◽  
Quantitative Importance

Phosphorus Retention in Small Constructed Wetlands Treating Agricultural Drainage Water

2005 ◽  
Vol 34 (4) ◽  
pp. 1251-1259 ◽  
Author(s):  
Miriam Reinhardt ◽  
René Gächter ◽  
Bernhard Wehrli ◽  
Beat Müller
Keyword(s):  
Constructed Wetlands ◽  
Drainage Water ◽  
Agricultural Drainage ◽  
Phosphorus Retention ◽  
Agricultural Drainage Water

Optimization of External Carbon Addition for Biological Selenium Removal from Agricultural Drainage Water

2018 ◽  
Vol 2018 (10) ◽  
pp. 3762-3775
Author(s):  
Ryujiro Tsuchihashi ◽  
Julie Korak ◽  
Catherine Hoffman ◽  
Aaron Gress ◽  
Daniel Miller ◽  
...  
Keyword(s):  
Drainage Water ◽  
Agricultural Drainage ◽  
Carbon Addition ◽  
Agricultural Drainage Water ◽  
Selenium Removal

scholarly journals Temperature Sensitivity and Composition of Nitrate-Reducing Microbiomes from a Full-Scale Woodchip Bioreactor Treating Agricultural Drainage Water

2021 ◽  
Vol 9 (6) ◽  
pp. 1331
Author(s):  
Arnaud Jéglot ◽  
Sebastian Reinhold Sørensen ◽  
Kirk M. Schnorr ◽  
Finn Plauborg ◽  
Lars Elsgaard
Keyword(s):  
Temperature Response ◽  
Microbial Transformation ◽  
Drainage Water ◽  
Microbial Populations ◽  
Agricultural Drainage ◽  
Bacterial Populations ◽  
Cold Temperatures ◽  
Cold Adapted ◽  
Agricultural Drainage Water ◽  
Temperature Responses

Denitrifying woodchip bioreactors (WBR), which aim to reduce nitrate (NO3−) pollution from agricultural drainage water, are less efficient when cold temperatures slow down the microbial transformation processes. Conducting bioaugmentation could potentially increase the NO3− removal efficiency during these specific periods. First, it is necessary to investigate denitrifying microbial populations in these facilities and understand their temperature responses. We hypothesized that seasonal changes and subsequent adaptations of microbial populations would allow for enrichment of cold-adapted denitrifying bacterial populations with potential use for bioaugmentation. Woodchip material was sampled from an operating WBR during spring, fall, and winter and used for enrichments of denitrifiers that were characterized by studies of metagenomics and temperature dependence of NO3− depletion. The successful enrichment of psychrotolerant denitrifiers was supported by the differences in temperature response, with the apparent domination of the phylum Proteobacteria and the genus Pseudomonas. The enrichments were found to have different microbiomes’ composition and they mainly differed with native woodchip microbiomes by a lower abundance of the genus Flavobacterium. Overall, the performance and composition of the enriched denitrifying population from the WBR microbiome indicated a potential for efficient NO3− removal at cold temperatures that could be stimulated by the addition of selected cold-adapted denitrifying bacteria.

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