Oxygenation and synchronous control of nitrogen and phosphorus release at the sediment-water interface using oxygen nano-bubble modified material

Chen, Jingan; Ping-ping, YU; Yang, Xiujuan; Zhang, Lijuan; Geng, Zhanli; He, Kebin

doi:10.1016/j.scitotenv.2020.138258

Cited by 40 publications

(11 citation statements)

References 42 publications

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“…However, despite the decline in oxygen concentrations near the sediment surface, Yu et al [46] found that TP and DRP concentrations in the water were reduced in the treated cores for the duration of the 20-day incubations, and the release flux of DRP was reduced by 79%. Similar results were obtained by Wang et al [47] from four cores also collected from the Hongfeng Reservoir and treated with similar methods. Despite bottom waters being artificially maintained at DO < 1 mg•L −1 , release fluxes from the sediment of TP, TN and NH 3 -N decreased by NB treatment by 96%, 25% and 51%, respectively, relative to the non-treated cores.…”

Section: The Efficacy Of Oxygen Nanobubbles For the Restoration Of Eu...supporting

confidence: 87%

“…They occur naturally or can be produced on industrial scales. Nanobubbles are loaded onto the mineral surfaces by various methods including the alcohol-water method, whereby oxygen is dissolved into ethanol in which the carrier minerals are soaked (e.g., [46,47]), and the pressure-swing adsorption method, whereby a vacuum is used to remove gas from micropores in the carrier minerals, after which pure oxygen is introduced under pressure (e.g., [30,35]).…”

Section: Applications and Manufacturementioning

confidence: 99%

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Oxygen Nanobubbles for Lake Restoration—Where Are We at? A Review of a New-Generation Approach to Managing Lake Eutrophication

Waters

Hamilton

Pan

et al. 2022

Water

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Nutrient enrichment of lakes from anthropogenic activities is a significant and increasing issue globally, impairing the health, biodiversity and service provisioning from lakes, with impacts on cultural, recreational, economic and aesthetic values. Internal nutrient loads from lakebed sediment releases are a primary cause of lake eutrophication and have necessitated geoengineering methods to mitigate releases and speed up recovery from eutrophication. Our objective in this review was to evaluate the use of oxygen nanobubbles as a geoengineering technology to remediate low oxygen conditions at the lake sediment/water interface, as a precursor to alleviating eutrophication linked to high internal nutrient loads. Oxygen nanobubbles (NBs) are bubbles < 1000 nm formed at the interface of solid surfaces and aqueous solutions. These bubbles have higher density than water, persist for longer and facilitate greater oxygen solubility than larger bubbles. Methods have been developed to enable NB formation at the surface of carrier materials, which are then used in conjunction with modified local soils (MLSs), to ‘floc, lock and oxygenate’ to strip nutrients from the water column, locking them in lakebed sediments and oxygenating the sediments to prevent re-release of nutrients. Most studies of NBs for lake restoration have thus far only demonstrated their potential for this purpose, using short-term, small-scale core incubations conducted mainly in laboratory settings. Work is required to (1) address scalability, including procurement and cost, (2) extend laboratory incubation studies to large outdoor enclosures and pond/lake trials, (3) examine longevity of the effects in the natural environment, including potential for MLSs to smother benthos and/or have toxic effects, and (4) extend to a range of lake environments and MLS types. Legal, cultural and social acceptance of the technology is another prerequisite of applications in the natural environment and requires individualised analysis. Until these issues are addressed in a systematic way that addresses scalability and recommends suitable carrier materials and MLSs, NBs may continue to remain largely untried as a geoengineering method to address lake eutrophication.

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Section: The Efficacy Of Oxygen Nanobubbles For the Restoration Of Eu...supporting

confidence: 87%

Section: Applications and Manufacturementioning

confidence: 99%

Oxygen Nanobubbles for Lake Restoration—Where Are We at? A Review of a New-Generation Approach to Managing Lake Eutrophication

Waters

Hamilton

Pan

et al. 2022

Water

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“…In the nitrogen cycle, while dissolved oxygen concentrations at the sediment-water interface reflect redox potential, they affect ammoniacal nitrogen and nitrate-nitrogen and nitrite-nitrogen exchange. As Mu et al (2017), Yan et al (2020), Wang et al (2020) and Wang et al (2022) reported, nitrification occurs easily under aerobic conditions, the nitrate/nitrogen concentration in the sediment increases even more and there is nitrate/nitrogen release into the overlying water. In line with this, in Mogan Lake the highest value for nitrate/nitrogen was measured during October, when the oxygen level was at 10.50 mg l -1 .…”

Section: Discussionmentioning

confidence: 87%

Post-dredging nitrogen dynamics at the sediment–water interface: the shallow, eutrophic Mogan Lake, Turkey

Topçu

Atlığ

2023

OandHS

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The sedimentation and resuspension of various forms of nitrogen in wetlands determines the direction of the nitrogen dynamics. Mogan Lake, in the Gölbaşı Special Environmental Protection Area, is one of the most important Ramsar-nominated wetlands in Turkey. Lake management applications have been performed by the local managers since 2008, including sediment cleaning activities such as dredging. In this context, the aim was to quantitatively predict the nitrogen dynamics (ammonium and nitrate release/ uptake in the positive and/or negative direction) at the sediment–water interface, which has not been addressed in the eutrophication and sediment-related studies conducted to date on the lake in question. Sediment ammonium and nitrate flux were estimated to be between -9.16 and 0.36 µg m-2 d-1 and between -67.2 and 35.16 µg m-2 d-1, respectively. The estimations for sediment nitrogen flux in Mogan Lake did not show a regular seasonal or spatial fluctuation. Our results demonstrate that low nitrogen release levels in Mogan Lake do not pose a threat to its nutrient level. In conclusion, both monitoring and reducing external loading is still the top priority for a long-term recovery of water quality in the process of freshwater ecosystems.

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“…Nano materials application can affects plant N uptake and growth (Wang et al 2020; Mohammad Abass Ahanger et al 2021). Compared with conventional materials, nano materials have small-size effect, interface effect and quantum size effect, and nano materials are prone to produce surface conjugation effect.…”

Section: Introductionmentioning

confidence: 99%

Application Nano Fruit Tree Hole Storage Brick Fertilizer Is Beneficial to Increase the Nitrogen Utilization Of Grape Plants Under Subsurface Drip Irrigation

Dongdong

Yang

Jia³

et al. 2022

SSRN Journal

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Oxygenation and synchronous control of nitrogen and phosphorus release at the sediment-water interface using oxygen nano-bubble modified material

Cited by 40 publications

References 42 publications

Oxygen Nanobubbles for Lake Restoration—Where Are We at? A Review of a New-Generation Approach to Managing Lake Eutrophication

Oxygen Nanobubbles for Lake Restoration—Where Are We at? A Review of a New-Generation Approach to Managing Lake Eutrophication

Post-dredging nitrogen dynamics at the sediment–water interface: the shallow, eutrophic Mogan Lake, Turkey

Application Nano Fruit Tree Hole Storage Brick Fertilizer Is Beneficial to Increase the Nitrogen Utilization Of Grape Plants Under Subsurface Drip Irrigation

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