Finding an alternative to nickel used in an alloy (copper-nickel) in electric power plants

Salih, Ekbal Mohammed Saeed; Al-Jubori, Haider A.H.; Abbas, Roaa Jameel

doi:10.1016/j.matpr.2021.08.269

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…To be specific, the application of copper smelting, which extracts copper from copper concentrate via multiple sulfide oxidizing stages, in power generation from nuclear and fossil-fired power plants usually centers around heat transfer facilities, such as steam generators, heat exchangers, coolers, heaters, and condensers. Copper-nickel alloys as the top choice of material for construction are superior with respect to extraordinary corrosion resistances and heat transfer efficiencies . In addition, landfill of spoil from lignite mining due to the conventional electricity mix in lignite-fired power plants ranks first among all of the component impacts and is 23.4% of total 1.30 kg 1,4-DCB HTNCP, while 0.46 kg oil eq FRSP results from bituminous coal and natural gas extraction mainly for corn growth, followed by electricity supply.…”

Section: Resultsmentioning

confidence: 99%

“…Copper-nickel alloys as the top choice of material for construction are superior with respect to extraordinary corrosion resistances and heat transfer efficiencies. 56 In addition, landfill of spoil from lignite mining due to the conventional electricity mix in lignite-fired power plants ranks first among all of the component impacts and is 23.4% of total 1.30 kg 1,4-DCB HTNCP, 57 while 0.46 kg oil eq FRSP results from bituminous coal and natural gas extraction mainly for corn growth, followed by electricity supply. In summary, it is corn cultivation and medium voltage electricity mix that contribute the most to the environmental impact of the biochemical process at GWP, TETP, HTNCP, and FRSP, which urges the shift from nonrenewable fossil fuels and fertilizers to renewable resources, including but not limited to renewable energies and fertilizers containing minimum nitrogen, phosphorous, and potassium.…”

Section: Comparisons Between Conventional and Innovativementioning

confidence: 99%

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Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO₂ Reduction toward Sustainable Ethanol Synthesis

Tan

Ong

2023

ACS Sustainable Chem. Eng.

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Faced by the concerning climate change worldwide and agriculture-dependent biochemical and energy-intensive thermochemical technologies, research and development efforts in exploring sustainable ethanol synthesis toward carbon neutrality are urgent. Recently, an electrochemical process via the electrocatalytic CO2 reduction reaction (CO2RR) to synthesize ethanol has emerged as a promising alternative approach by directly consuming CO2 from the atmosphere. Despite the fact that numerous remarkable electrocatalysts with fascinating activity, selectivity, and stability have been extensively uncovered in this field, environmental impacts of this technology have rarely been acknowledged. Herein, a life cycle assessment (LCA) study is conducted to evaluate the potential environmental impacts and benefits of an innovative electrochemical process versus conventional biochemical and thermochemical processes toward the sustainable synthesis of 1 kg of ethanol. Impact assessment results revealed that with the contemporary electricity mix, the electrochemical process is still surpassed by the biochemical process, and its environmental benignity is not pronounced, attributed to tremendous electricity utilities accounting for 67.7–100% of impacts. However, it prevails over the two conventional routes when powered by renewable energies, particularly solar energy, with impact reduction ranging from 108.6 to 750.5%, while providing the greatest benefits with respect to terrestrial ecotoxicity (TETP). Carbon footprint further indicates that the electrochemical process becomes competitive and reaches carbon neutrality once driven by electricity with carbon intensity (CI) below 0.25 and 0.12 kg CO2 eq/kWh. Overall, in spite of its massive electricity utilities, the electrochemical ethanol synthesis route is highly promising in environmental impact remediation when coupled with renewable energies, which calls for more efforts from researchers and governments to achieve carbon neutrality and sustainability in years to come.

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Section: Resultsmentioning

confidence: 99%

Section: Comparisons Between Conventional and Innovativementioning

confidence: 99%

Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO₂ Reduction toward Sustainable Ethanol Synthesis

Tan

Ong

2023

ACS Sustainable Chem. Eng.

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A metallic anti-biofouling surface with a hierarchical topography containing nanostructures on curved micro-riblets

et al. 2022

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Metallic surface finishes have been used in the anti-biofouling, but it is very difficult to produce surfaces with hierarchically ordered structures. In the present study, anti-biofouling metallic surfaces with nanostructures superimposed on curved micro-riblets were produced via top-down fabrication. According to the attachment theory, these surfaces feature few attachment points for organisms, the nanostructures prevent the attachment of bacteria and algal zoospores, while the micro-riblets prohibit the settlement of macrofoulers. Anodic oxidation was performed to induce superhydrophilicity. It forms a hydration layer on the surface, which physically blocks foulant adsorption along with the anti-biofouling topography. We characterized the surfaces via scanning electron and atomic force microscopy, contact-angle measurement, and wear-resistance testing. The contact angle of the hierarchical structures was less than 1°. Laboratory settlement assays verified that bacterial attachment was dramatically reduced by the nanostructures and/or the hydration layer, attributable to superhydrophilicity. The micro-riblets prohibited the settlement of macrofoulers. Over 77 days of static immersion in the sea during summer, the metallic surface showed significantly less biofouling compared to a surface painted with an anticorrosive coating.

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Finding an alternative to nickel used in an alloy (copper-nickel) in electric power plants

Cited by 2 publications

References 6 publications

Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO₂ Reduction toward Sustainable Ethanol Synthesis

Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO₂ Reduction toward Sustainable Ethanol Synthesis

A metallic anti-biofouling surface with a hierarchical topography containing nanostructures on curved micro-riblets

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Finding an alternative to nickel used in an alloy (copper-nickel) in electric power plants

Cited by 2 publications

References 6 publications

Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO2 Reduction toward Sustainable Ethanol Synthesis

Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO2 Reduction toward Sustainable Ethanol Synthesis

A metallic anti-biofouling surface with a hierarchical topography containing nanostructures on curved micro-riblets

Contact Info

Product

Resources

About

Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO₂ Reduction toward Sustainable Ethanol Synthesis

Prospective Life Cycle Assessment Bridging Biochemical, Thermochemical, and Electrochemical CO₂ Reduction toward Sustainable Ethanol Synthesis