Removal of Nitrogen by Three Plant Species in Hydroponic Culture: Plant Uptake and Microbial Degradation

Wu, Hailu; Xu, Kai; He, Xiaojuan; Wang, Xinze

doi:10.1007/s11270-016-3036-3

Cited by 21 publications

(6 citation statements)

References 38 publications

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“…Interactions between plants, water, and microorganisms are not fully explored in FTWs, yet bacteria play a vital role in such systems . Bacteria degrade organic pollutants, produce phytohormones, increase disease resistance in the host plant, and remove stress due to the presence of contaminants .…”

Section: Plant–bacterial Synergism In Ftwsmentioning

confidence: 99%

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Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Shahid

Arslan

Ali

et al. 2018

CLEAN Soil Air Water

101

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Floating treatment wetland (FTW) is an effective and sustainable technology for wastewater treatment. It has been widely adopted for treating various kinds of polluted water including agricultural runoff, stormwater, industrial effluents, etc. In FTWs, plants are vegetated on a floating mat while their roots are extended down to the contaminated water hence acting as biological filters. Nutrients and potentially toxic metal(s)/element(s) are taken up from the wastewater by plants through their roots whereas organic matter is degraded by the microorganisms forming biofilms on the roots and mat surface. Additionally, organic contaminants which are already taken up by the plants are degraded by endophytic bacteria in planta. This article provides an overview of FTWs and their application for wastewater treatment. The key factors which have an impact on the performance of FTWs are also described. Lastly, the potential role of combined use of plants and bacteria in FTWs for the maximum remediation of polluted water is emphasized.

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Section: Plant–bacterial Synergism In Ftwsmentioning

confidence: 99%

“…Although plants can partially degrade the organic compounds, nevertheless, complete degradation is indispensable without effective partnership with microorganisms . The partnership can be neutral, commensal, and dormant . Plant roots are the primary site for bacteria to colonize plant tissue.…”

Section: Plant–bacterial Synergism In Ftwsmentioning

confidence: 99%

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Shahid

Arslan

Ali

et al. 2018

CLEAN Soil Air Water

101

View full text Add to dashboard Cite

show abstract

“…The Microorganisms–Plant combined system enhanced removal of BPA up to 92.32 ± 1.23% (Suyamud et al 2018 ). Wu et al 2016 worked on removal of nitrogen from water by hydroponic condition using three macrophyte species Typha augus tifolia , Phragmites australis , and Acorus calamus L . The three species were fed with synthetic waste water.…”

Section: Enhanced Removal Of Excess Nutrients/pollutants In Aquatic Environmentmentioning

confidence: 99%

Enhanced remediation of pollutants by microorganisms–plant combination

Supreeth

2021

Int. J. Environ. Sci. Technol.

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The pollutants have become ubiquitous in the total environment (water, soil and air) due to human activities and they are hazardous to all forms of life on the earth. This problem has made scientists focus on mitigating or complete reduction in pollutants by several means. Microorganism and plants are known to scavenge pollutants. Both are studied enormously in reducing, refining, and removing pollutants from the environment successfully. But, their slow process for removal is disadvantage. However, according to recent advancements in the abatement of pollutants, a combined system of both microorganisms and plant has shown to enhance the remediation of pollutants to an efficient level. In a nutrient-depleted pollutant-rich environment, when suitable plant and microorganisms are introduced, the plant interacts with the rhizosphere and root associate with microorganisms to survive in toxic conditions. The chemicals released by plants signal the microorganisms for interactions. This interaction leads in higher germination efficiency and enhanced root elongation which results in enhanced degradation of pollutants in both rhizosphere and phyllosphere. In this background, the current review article provides an overview of the recent advancement in microorganisms plant combined systems in enhanced removal of several recalcitrant pollutants. The conclusion highlights the challenges and future perspectives in this area of research.

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“…After 48 h, water samples were collected to analyze organic acids and sugars using a high-performance liquid chromatography (HPLC) analyzer (Waters2690, Miford, MA, USA). The HPLC procedures and analytical materials followed the procedure described by Wu et al [17]. After 30 days, 10 g of gravel from each CW was dropped into a conical flask containing 150 mL deionized water.…”

Section: Sampling and Water Quality Analysismentioning

confidence: 99%

Effects of Selected Root Exudate Components on Nitrogen Removal and Development of Denitrifying Bacteria in Constructed Wetlands

Wu¹,

Wang²,

He³

2017

Water

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Root exudates, particularly low molecular weight carbon (LMWC) substrates, are major drivers of bacterial diversity and activity in the rhizosphere environment. However, it is not well understood how specific LMWC compounds-such as organic acids, soluble sugars, and amino acids-influence the community structures of denitrifying bacteria or if there are specific functions of LMWC substrates that preferentially respond to nitrogen (N) removal in constructed wetlands (CWs). To address these knowledge gaps, we added mixtures of artificial exudates to CW microcosms containing N pollutant. N removal efficiency was observed over a 48-h experimental period, and at the end of the experiment, DNA was extracted from microbial samples for assessment of the bacterial community. The removal efficiencies of TN for the exudates treatments were higher than for control groups by 47.1-58.67%. Organic acid and soluble sugar treatments increased N removal, while amino acids were negative to N removal. The microbial community was changed when artificial exudates were added, but there were no significant relationships between LMWC compounds and bacterial community composition. These results indicate that although the responses of community structures of denitrifying bacteria to LMWC additions are still uncertain, there is evidence for N removal in response to exudate additions across LMWC types.

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Removal of Nitrogen by Three Plant Species in Hydroponic Culture: Plant Uptake and Microbial Degradation

Cited by 21 publications

References 38 publications

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Enhanced remediation of pollutants by microorganisms–plant combination

Effects of Selected Root Exudate Components on Nitrogen Removal and Development of Denitrifying Bacteria in Constructed Wetlands

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