The global energy transition offers new options for mitigation of coastal hypoxia: Do we know enough? DOI Creative Commons
Patricia Handmann, Douglas W.R. Wallace

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: March 1, 2024

The mitigation of climate change and pollution-related hypoxia anoxia is a growing challenge for coastal communities. Known ocean conservation measures do not show the desired fast results counteracting deoxygenation. new infrastructure related to production renewable energies linked green hydrogen can provide possibilities artificial reoxygenation mitigate hypoxia, but has be treated urgently seriously from different scientific, engineering socio-economic angles. incidence hypoxic anoxic conditions in regions increased 10 cases 1960 over 900 2018 (Breitburg et al., 2018). This global-scale trend driven by nutrient pollution and, increasingly, warming circulation changes associated with Low oxygen triggers several negative impacts within marine ecosystems, including decreased biodiversity, risk over-fishing, alteration biogeochemical microbial processes potentially driving greenhouse gas (GHG; N2O CH4; Grégoire 2023). deoxygenation also major impact. Notably, its fisheries >237 million jobs protein >3 billion people worldwide, value 3 trillion (1018) USD per year (Stuchtey For example, Baltic Sea (Europe), Gulf Mexico or Chesapeake Bay (USA), losses are impacting economies on scale thousands billions (109) dollars (Dewar 2009). Despite this, current (e.g. Marine protected areas) ill-suited addressing Attempts controlling inputs complicated retention long time-lags, challenging implement neglect role (STAC, 2023; Stigebrandt & Andersson, 2022). Sea, benthic fluxes recycling phosphorus (P) deep basins cause levels remain high despite reductions external P-inputs (Stigebrandt It was argued that oxygenation (AO) bottom water could reduce large, internal source P, more effective restoring ecosystem than even full implementation limitations. To date, downwelling method envisioned Baltic, involving pumping surface content into low-oxygen such arguments, neither AO nor been considered remediation environment. A reason may and/or enhanced mixing carries unknowns risks column's hydrographic structure. requires significant energy. On other hand, applied widely freshwater systems (Singleton Little, 2006) at small scales aquaculture. These applications have included direct introduction gas, which potential advantages pumping, column However, pure broad use likely due cost, limited availability large quantities required about change, dramatically, as an inadvertent consequence global energy transition, will critical assuring security face net-zero GHG commitments (Dawood 2020). Many sources wind, tides waves) concentrated settings. 'green' using key option growth create oxygen, by-product electrolysis 0.5 GW electrolyser produce up ca. 0.8 × 105 t(H2) year−1 6 t(O2) year−1. occur predominantly regions, revealing unprecedented regional scales. Given threat sudden emergence mitigation, there urgent need theoretical experimental research well policy discussion. Consideration raises interlinked engineering, ethical questions (Wallace exploration appears align directly Articles 2 UN's 'Declaration Ethical Principles Relation Climate Change' (United Nations Educational, Scientific Cultural Organization, 2017) (see Wallace Additionally, assessment efficacy likelihood unintended consequences complex physical–biogeochemical interactions. Engineering concerning how safely economically deliver question who should pay biodiversity protection/restoration might arena (biodiversity credits/Environmental, social governance ratings). make progress AO, pilot experiments relevant science, needed. illustrated recently long-term St. Lawrence case study There, supply increasing climate-related circulation. Gulf-wide loss (>150 m) estimated year−1, smaller O2 expected plant, currently proposed construction southwest Newfoundland. Significantly, plant location adjacent where in-flowing Atlantic-derived waters naturally deeper layers Gulf. We therefore encourage conservation, communities come together initiate, immediately, broad-based discussion both focused (Figure 1). Patricia Handmann: Conceptualization; visualization; writing – original draft; review editing. Douglas Wallace: Visualization; authors declare they no known competing financial interests personal relationships appeared influence work reported this paper. Data sharing applicable article datasets were generated analysed during study.

Language: Английский

Simple and efficient fabrication of cathode using activated polyaniline as binder for alkaline water electrolysis DOI
Su Hyun Kim, Hae In Lee,

Jeongha Kim

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162785 - 162785

Published: Feb. 1, 2025

Language: Английский

Citations

0
Green Hydrogen Sustainable Solution to Combat CO2 Emissions and Mitigate Climate Change DOI
Youssef El Mourabit, Mustapha Agnaou, Jamal Mabrouki

et al.

IGI Global eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 159 - 184

Published: April 25, 2025

The persistent increase in carbon dioxide (CO2) emissions from traditional fossil fuel-based energy production methods has led to significant environmental challenges, including climate change, ocean acidification, and biodiversity loss. This review examines the detrimental effects of CO2 on environment human health, highlighting urgent need for a transition cleaner sources. It explores limitations conventional systems ongoing efforts adopt more sustainable practices. In this context, green hydrogen emerges as promising alternative. Produced through water electrolysis using renewable energy, offers clean solution reduce across various sectors, transportation, industry, energy.

Language: Английский

Citations

0
Deep inflow transport and dispersion in the Gulf of St. Lawrence revealed by a tracer release experiment DOI Creative Commons
Samuel W. Stevens, Rich Pawlowicz, Toste Tanhua

et al.

Communications Earth & Environment, Journal Year: 2024, Volume and Issue: 5(1)

Published: June 20, 2024

Abstract The Gulf of St. Lawrence is increasingly affected by bottom water hypoxia; however, the timescales and pathways deep transport remain unclear. Here, we present results from Deep Tracer Release eXperiment (TReX Deep), during which an inert SF 5 CF 3 tracer was released inshore Cabot Strait at 279 m depth to investigate inflow mixing rates. Dispersion also assessed via neutrally-buoyant Swish floats. Our findings indicate that moves inland 0.5 cm s −1 , with effective lateral diffusivity 2 × 10 over 1 year. Simplified 1D simulations suggest should reach estuary head in 1.7 years, bulk arriving after 4.7 years. Basin-wide vertical around −5 year; increases near basin slopes, suggesting turbulent boundary processes influence mixing. These are compared Lagrangian a regional 3D model evaluate capacity dispersion Gulf.

Language: Английский

Citations

1
The global energy transition offers new options for mitigation of coastal hypoxia: Do we know enough? DOI Creative Commons
Patricia Handmann, Douglas W.R. Wallace

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: March 1, 2024

The mitigation of climate change and pollution-related hypoxia anoxia is a growing challenge for coastal communities. Known ocean conservation measures do not show the desired fast results counteracting deoxygenation. new infrastructure related to production renewable energies linked green hydrogen can provide possibilities artificial reoxygenation mitigate hypoxia, but has be treated urgently seriously from different scientific, engineering socio-economic angles. incidence hypoxic anoxic conditions in regions increased 10 cases 1960 over 900 2018 (Breitburg et al., 2018). This global-scale trend driven by nutrient pollution and, increasingly, warming circulation changes associated with Low oxygen triggers several negative impacts within marine ecosystems, including decreased biodiversity, risk over-fishing, alteration biogeochemical microbial processes potentially driving greenhouse gas (GHG; N2O CH4; Grégoire 2023). deoxygenation also major impact. Notably, its fisheries >237 million jobs protein >3 billion people worldwide, value 3 trillion (1018) USD per year (Stuchtey For example, Baltic Sea (Europe), Gulf Mexico or Chesapeake Bay (USA), losses are impacting economies on scale thousands billions (109) dollars (Dewar 2009). Despite this, current (e.g. Marine protected areas) ill-suited addressing Attempts controlling inputs complicated retention long time-lags, challenging implement neglect role (STAC, 2023; Stigebrandt & Andersson, 2022). Sea, benthic fluxes recycling phosphorus (P) deep basins cause levels remain high despite reductions external P-inputs (Stigebrandt It was argued that oxygenation (AO) bottom water could reduce large, internal source P, more effective restoring ecosystem than even full implementation limitations. To date, downwelling method envisioned Baltic, involving pumping surface content into low-oxygen such arguments, neither AO nor been considered remediation environment. A reason may and/or enhanced mixing carries unknowns risks column's hydrographic structure. requires significant energy. On other hand, applied widely freshwater systems (Singleton Little, 2006) at small scales aquaculture. These applications have included direct introduction gas, which potential advantages pumping, column However, pure broad use likely due cost, limited availability large quantities required about change, dramatically, as an inadvertent consequence global energy transition, will critical assuring security face net-zero GHG commitments (Dawood 2020). Many sources wind, tides waves) concentrated settings. 'green' using key option growth create oxygen, by-product electrolysis 0.5 GW electrolyser produce up ca. 0.8 × 105 t(H2) year−1 6 t(O2) year−1. occur predominantly regions, revealing unprecedented regional scales. Given threat sudden emergence mitigation, there urgent need theoretical experimental research well policy discussion. Consideration raises interlinked engineering, ethical questions (Wallace exploration appears align directly Articles 2 UN's 'Declaration Ethical Principles Relation Climate Change' (United Nations Educational, Scientific Cultural Organization, 2017) (see Wallace Additionally, assessment efficacy likelihood unintended consequences complex physical–biogeochemical interactions. Engineering concerning how safely economically deliver question who should pay biodiversity protection/restoration might arena (biodiversity credits/Environmental, social governance ratings). make progress AO, pilot experiments relevant science, needed. illustrated recently long-term St. Lawrence case study There, supply increasing climate-related circulation. Gulf-wide loss (>150 m) estimated year−1, smaller O2 expected plant, currently proposed construction southwest Newfoundland. Significantly, plant location adjacent where in-flowing Atlantic-derived waters naturally deeper layers Gulf. We therefore encourage conservation, communities come together initiate, immediately, broad-based discussion both focused (Figure 1). Patricia Handmann: Conceptualization; visualization; writing – original draft; review editing. Douglas Wallace: Visualization; authors declare they no known competing financial interests personal relationships appeared influence work reported this paper. Data sharing applicable article datasets were generated analysed during study.

Language: Английский

Citations

1