Negative Emission Enabled by Combining Ocean Alkalinity Enhancement and Waste Concrete Upcycling

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Янв. 17, 2025

Electrochemical ocean alkalinity enhancement (OAE) is a promising technology for negative carbon emissions, but the resulting dilute acid stream poses disposal challenge. This study presents an innovative method to neutralize this using recycled concrete aggregates (RCA) while simultaneously producing high-quality new construction. A rotary drum reactor facilitates reaction and reduces concentration from 0.5 0.1 M HCl lowering RCA water absorption 6.8 0.5–1%. The remaining further neutralized near-neutral pH by with fines. effects of precarbonation on scalability are also discussed. Integrating waste upcycling electrochemical OAE has potential achieve hundreds megatons CO2 emissions annually diverting gigatons construction demolition landfills, thus generating significant revenue through reduced fees production valuable aggregates.

Язык: Английский

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Did It Work? Shifting Strategies for How We Assess Benefits to Communities from Long-Term Coastal Restoration Projects

Estuaries and Coasts, Год журнала: 2025, Номер 48(2)

Опубликована: Янв. 17, 2025

Язык: Английский

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Benthic mud content is a strong indicator of coral cover and ecosystem recovery on turbid coral reefs

Marine Pollution Bulletin, Год журнала: 2025, Номер 212, С. 117596 - 117596

Опубликована: Янв. 23, 2025

Turbid coral reefs are characterised by high turbidity and sedimentation. However, the impacts of terrestrial sediment inputs on communities, as well their interactions with reef-derived carbonate sediment, remain poorly understood. Here we examine physical properties mixed carbonate-siliciclastic benthic sediments from six turbid in southern Singapore, which exhibit covers ranging 15 % to 65 %. Coral was dominant contributor sand gravel (mean ± SE: 57 1 %), followed molluscan grains (21 %). Mud content ranged 0 26 between sites there a positive correlation (r = 0.4) terrigenous mud coral-derived sand, while cover significantly decreased increasing mud. Results suggest that losses may initially cause an increase bioclastic reef structure degrades. long-term declines will ultimately reduce supply, live sources diminish reefs. Our findings highlight importance mitigating loads reefs, even within naturally environments, ensure continued generation ecosystem functioning. also strong predictor recovery following major bleaching underscoring need for holistic transboundary management coastal urbanisation continues intensify.

Язык: Английский

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Assessing Dynamic Coastal Vulnerability to climate hazards: A geospatial approach in Kakinada District, Andhra Pradesh, India

Environmental and Sustainability Indicators, Год журнала: 2025, Номер unknown, С. 100622 - 100622

Опубликована: Янв. 1, 2025

Язык: Английский

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Metagenomic insights into pathogenic bacteria and antimicrobial resistance in offshore coastal sediments – An Example from Gulf Waters

Environmental Challenges, Год журнала: 2025, Номер 18, С. 101099 - 101099

Опубликована: Фев. 1, 2025

Язык: Английский

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The role of climate and population change in global flood exposure and vulnerability

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Фев. 3, 2025

Язык: Английский

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Accounting for Compound Flooding Can Prevent Maladaptation—A Baltic Sea Case Study

Earth s Future, Год журнала: 2025, Номер 13(2)

Опубликована: Фев. 1, 2025

Abstract Estuarine areas are currently at risk of compound flooding, the frequency and intensity which is expected to increase with climate change. Even though efforts made adapt against single flood drivers using hard protection, potential subsequent changes in due flooding often overlooked assessments. This because assessments mostly focus on individual do not account for from adaptation measures. We address this question use hydrodynamic modeling simulate two scenarios. consider terms storm surge barriers, locations along Trave estuary, namely Schlutup Trave, Lübeck, Germany. assess effectiveness both barriers reducing by simulating individual‐driver, as well low‐ high‐magnitude find that while during low‐magnitude reduce overall extent 25%–86%, leads an up 100%, depending location barrier. Our results suggest river contribution amplified 52%–100% Barrier. The Barrier, however, only amplifies extents findings highlight need planning avoid defense failure unexpected increases risk. However, study considers (low probability) extreme events, a more comprehensive approach necessary fully understand impact

Язык: Английский

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Characterization of Gulf Stream Energy Resources: A 30-Year High-Resolution Simulation Study

Опубликована: Янв. 1, 2025

Язык: Английский

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Island Communities and Sea Level Rise: Resettlement and Maladaptation, the Kuna People of Isberyala, Panama

International Journal of Disaster Risk Reduction, Год журнала: 2025, Номер unknown, С. 105313 - 105313

Опубликована: Фев. 1, 2025

Язык: Английский

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Response to sea-level change in a non-deltaic coastal plain: Insights from cores chronologies

Geomorphology, Год журнала: 2025, Номер unknown, С. 109678 - 109678

Опубликована: Фев. 1, 2025

Язык: Английский

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