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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 847 records · Page 47
All sourcesNASA NTRSDOE OSTI
DOE OSTI2018

Are current effectiveness criteria fit for purpose? Using a controversial strategic assessment as a test case

Highlights: • The effectiveness framework of Bond et al. (2015) is tested on a case study. • The strategic assessment of the proposed Browse LNG Precinct is evaluated. • The effectiveness framework is modified as a result of the analysis. • “Legitimacy” encompasses both pluralism and normative effectiveness. • Substantive effectiveness should include consideration of unintended consequences. - Abstract: The aim of this paper is to test the broader utility of the sustainability assessment effectiveness framework of Bond et al. (2015) by applying it to a controversial strategic assessment case study. The effectiveness framework comprises six dimensions: procedural effectiveness, substantive effectiveness, transactive effectiveness, normative effectiveness, pluralism, and knowledge and learning. It was originally developed to evaluate sustainability assessment at a system-wide level and it has not been previously applied to a specific case study. The analysis was conducted through document review and the first-hand experience of two of the authors who were involved in the case study in different capacities. The case study selected was the strategic assessment of the proposed Browse Liquefied Natural Gas (LNG) Precinct in Western Australia, which was conducted over the period 2007–2015 under the strategic assessment provisions of both the Western Australian and Australian Commonwealth environmental legislation. The framework provided a useful structure within which this complex case study could be explored, its strengths and weaknesses brought to light, and the interactions between the dimensions highlighted. We also found opportunities for refinement of the framework. As a result of this analysis we propose to replace the final three dimensions of the framework with legitimacy, where a legitimate process is one which all stakeholders agree is fair and which delivers an acceptable outcome for all parties, though we acknowledge the need for further conceptualisation of this dimension. We also suggest that the concept of substantive effectiveness should be expanded to incorporate the unintended consequences of impact assessment. Our research thus makes both a useful addition to the literature already published on the Browse case study, as well as to the literature on impact assessment effectiveness.

29 ENERGY PLANNING, POLICY, AND ECONOMY↗
DOE OSTI2025

The efficacy and ecological impact of mercury sorbents on the physiology and reproductive fitness of Daphnia magna

Environmental mercury (Hg) contamination threatens ecosystems due to its bioaccumulation and toxicity. Effective and sustainable remediation strategies are essential, with carbon-based sorbents like biochar (BC) and activated carbon (AC) gaining attention for their high adsorption capacity and cost-effectiveness. However, their ecological impacts remain poorly understood. This study evaluates the Hg removal efficacy and ecological effects of three sorbents—BC, granular AC (GAC), and AC fiber (ACF)—in a flow-through column system with and without Hg additions. We tested Hg removal at two concentrations (1 and 4 µg/L Hg) and assessed chronic exposure effects on a sentinel and sensitive freshwater organism, Daphnia magna, over 30 days of exposure to the columns’ effluent. GAC removed 100 % of Hg, while BC and ACF achieved 99 % removal. The ACF + 4 µg/L Hg effluent induced 70 % lethality in D. magna after nearly three weeks of exposure, while the GAC effluent significantly reduced fecundity, even in the absence of Hg exposure. In contrast, the BC effluent enhanced reproductive output, likely due to inputs of carbon and nitrogen in the effluent. These findings highlight the need to balance Hg removal efficacy with ecological safety, emphasizing the importance of considering both remediation effectiveness and potential environmental impacts.

Activated carbon↗