Comparative Life Cycle Assessment (LCA) of Accelerated Carbonation Processes Using Steelmaking Slag for CO2 Fixation

Xiao, Lishan; Wang, Run; Chiang, Pen‐Chi; Pan, Shu Yuan; Guo, Qing Hai; Chang, E. E.

doi:10.4209/aaqr.2013.04.0121

Cited by 24 publications

(12 citation statements)

References 29 publications

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“…Giannoulakis et al 29 performed a LCA study for a power plant and showed that the implementation of CCS by mineralization could reduce life cycle GHG emissions by 15-64% but would increase the levelized cost of electricity by 90-370% compared to a reference power plant without CCS. Xiao et al 30 studied the mineralization of steel slag via several pathways and showed that key factors effecting the overall process are the particle size of alkaline solid waste, the rotating speed of the rotary packed bed, the solid/liquid ratio, and the reaction temperature. In another LCA study, Julcour et al 31 investigated the effect of mechanical exfoliation on mineralization to reduce emissions from a power plant.…”

Section: Introductionmentioning

confidence: 99%

Rock ‘n’ use of CO₂: carbon footprint of carbon capture and utilization by mineralization

Ostovari

Sternberg

Bardow

2020

Sustainable Energy Fuels

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Section: Introductionmentioning

confidence: 99%

Rock ‘n’ use of CO₂: carbon footprint of carbon capture and utilization by mineralization

Ostovari

Sternberg

Bardow

2020

Sustainable Energy Fuels

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“…Several capture technologies exist and various applications have been studied over the past 2 decades (Cuéllar-Franca and Azapagic 2015). Among the existing techniques, mineral carbonation allows the capture of CO 2 inside rocks, such as serpentinite, or waste such as steel making slags and platinum tailings (Khool et al, 2011;Nduagu et al, 2012;Giannoulakis et al, 2014;Xiao et al, 2014;Ostovari et al, 2020). CCU is particularly interesting for industrial solid waste, allowing a double advantage by capturing carbon dioxide and offering waste valorization, despite high energy issues (Liu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Prospective Life Cycle Assessment at Early Stage of Product Development: Application to Nickel Slag Valorization Into Cement for the Construction Sector

Quéheille

Dauvergne

Ventura

2021

Front. Built Environ.

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Pyrometallurgical nickel industry in New Caledonia produces several tons of slag per year, which is stocked on site. There is no valorization today, except for a small transformation into sand. Pyrometallurgy highly consumes fossil-fuel energy and electricity for ore pre-treatment and nickel extraction inside electrical furnaces, which produces significant CO2 emissions. A new valorization approach is suggested to use these two local productions (slag and CO2) to mineralize slag and produce silico-magnesian cement for the construction sector. In order to ensure suitable environmental performances, many questions arise about the target valorized product: where and how to capture CO2 and produce cement, what constraints should be targeted for the mineralization process, can products be exported and where? Moreover, New Caledonia aims to develop renewable energies for electricity grid, which would mitigate local industries impacts in the future. A prospective Life Cycle Assessment (LCA) is used to define constraints on future product development. Two hundred scenarios are defined and compared as well as electricity grid evolution, using Brightway software. Thirteen scenarios can compete with traditional Portland cement for 12 of the 16 impacts of the ILCD midpoint method. The evolution of electricity grid slightly affects the performance of the scenarios by a mean of less than+/−25%, bringing a small difference on the number of acceptable scenarios. The main constraint requires improving the mineralization process by considerably reducing electricity consumption of the attrition-leaching operation. To be in line with scenarios concerning carbon neutrality of the cement industry by 2050, a sensitivity analysis provides the maximum energy consumption target for the mineralization process that is 0.9100 kWh/kg of carbonated slag, representing a 70% reduction of the current energy measured at lab scale. Valorization of nickel slag and CO2 should turn to carbon capture and utilization technology, which allows for the production of supplementary cementitious materials, another product for the construction sector. It will be the topic of a next prospective study.

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“…In addition, since the environmental awareness of the public has increased, the odors caused by treatment plants have become a new and troublesome social problem. Another study suggests that municipal waste management in China tends to incinerate instead of landfill, but it causes social conflicts as it impedes the construction of treatment plants near public land or habitats [28].…”

Section: Life Cycle Assessment Of Sewage Managementmentioning

confidence: 99%

Comparative Life Cycle Assessment of Sewage Sludge (Biosolid) Management Options

Taşeli¹

2020

Sustainable Sewage Sludge Management and Resource Efficiency

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Sludge formation during wastewater treatment is inevitable even with proper management and treatment. However, the proper treatment and disposal of sludge are still difficult in terms of cost of treatment, the presence of new pollutants, health problems, and public acceptance. Conventional disposal methods (e.g., storage, incineration) have raised concerns about legislative constraints and community perception that encourage the assessment of substitute sludge management options. Sludge management requires a systematic solution that combines environmental effectiveness, social acceptability, and economic affordability. Life cycle assessment is one of the most important tools to identify and compare the environmental impact of sludge treatment technologies to ensure sustainable sludge management. Increased production of sludge (biosolids) increases worldwide due to population growth, urban planning, and industrial developments. The sludge needs to be properly treated and environmentally managed to reduce the negative effects of its application or disposal. This chapter deals with the application of biosolids or sewage sludge, together with possible resources for sustainable development. In this section, the life cycle assessments of sludge treatment methods were also investigated and found that sludge treatment techniques lead to major environmental impact categories such as global warming potential, human toxicity, acidification potential, and resource consumption.

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Comparative Life Cycle Assessment (LCA) of Accelerated Carbonation Processes Using Steelmaking Slag for CO2 Fixation

Abstract: Carbon

Cited by 24 publications

References 29 publications

Rock ‘n’ use of CO₂: carbon footprint of carbon capture and utilization by mineralization

Rock ‘n’ use of CO₂: carbon footprint of carbon capture and utilization by mineralization

Prospective Life Cycle Assessment at Early Stage of Product Development: Application to Nickel Slag Valorization Into Cement for the Construction Sector

Comparative Life Cycle Assessment of Sewage Sludge (Biosolid) Management Options

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Comparative Life Cycle Assessment (LCA) of Accelerated Carbonation Processes Using Steelmaking Slag for CO2 Fixation

Abstract: Carbon

Cited by 24 publications

References 29 publications

Rock ‘n’ use of CO2: carbon footprint of carbon capture and utilization by mineralization

Rock ‘n’ use of CO2: carbon footprint of carbon capture and utilization by mineralization

Prospective Life Cycle Assessment at Early Stage of Product Development: Application to Nickel Slag Valorization Into Cement for the Construction Sector

Comparative Life Cycle Assessment of Sewage Sludge (Biosolid) Management Options

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Product

Resources

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Rock ‘n’ use of CO₂: carbon footprint of carbon capture and utilization by mineralization

Rock ‘n’ use of CO₂: carbon footprint of carbon capture and utilization by mineralization