Sustainability of denitrifying bioreactors with various fill media
نویسندگان
چکیده
منابع مشابه
Performance of Agricultural Residue Media in Laboratory Denitrifying Bioreactors at Low Temperatures.
Denitrifying bioreactors can be effective for removing nitrate from agricultural tile drainage; however, questions about cold springtime performance persist. The objective of this study was to improve the nitrate removal rate (NRR) of denitrifying bioreactors at warm and cold temperatures using agriculturally derived media rather than wood chips (WC). Corn ( L.) cobs (CC), corn stover (CS), bar...
متن کاملDenitrifying Bioreactors Resist Disturbance from Fluctuating Water Levels
Nitrate can be removed from wastewater streams, including subsurface agricultural drainage systems, using woodchip bioreactors to promote microbial denitrification. However, the variations in water flow in these systems could make reliable performance from this microbially-mediated process a challenge. In the current work, the effects of fluctuating water levels on nitrate removal, denitrifying...
متن کاملDenitrifying Bioreactors for Nitrate Removal: A Meta-Analysis.
Meta-analysis approaches were used in this first quantitative synthesis of denitrifying woodchip bioreactors. Nitrate removal across environmental and design conditions was assessed from 26 published studies, representing 57 separate bioreactor units (i.e., walls, beds, and laboratory columns). Effect size calculations weighted the data based on variance and number of measurements for each bior...
متن کاملTaxis response of various denitrifying bacteria to nitrate and nitrite.
The taxis response of Rhodobacter sphaeroides 2.4.1 and 2.4.3, Rhodopseudomonas palustris, and Agrobacterium tumefaciens to nitrate and nitrite was evaluated by observing the macroscopic behavior of cells suspended in soft agar and incubated under various conditions. R. sphaeroides 2.4.3, which is capable of both nitrate and nitrite reduction, showed a taxis response to both nitrate and nitrite...
متن کاملApplication of denitrifying wood chip bioreactors for management of residential non-point sources of nitrogen
Two important and large non-point sources of nitrogen in residential areas that adversely affect water quality are stormwater runoff and effluent from on-site treatment systems. These sources are challenging to control due to their variable flow rates and nitrogen concentrations. Denitrifying bioreactors that employ a lignocellulosic wood chip medium contained within a saturated (anoxic) zone a...
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ژورنال
عنوان ژورنال: Plant, Soil and Environment
سال: 2017
ISSN: 1214-1178,1805-9368
DOI: 10.17221/372/2017-pse