On the road to net zero-emission cement: Integrated assessment of mineral carbonation of cement kiln dust

Pedraza, Jenniffer; Zimmermann, Arno; Tobón, Jorge Iván; Schomäcker, Reinhard; Rojas, Néstor Y.

doi:10.1016/j.cej.2020.127346

Cited by 48 publications

(34 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To investigate the best balance between issues and benefits, it needs to find the most efficient scenario for the CCU project and Life Cycle Assessment (LCA) is an efficient tool for this. As studied by (Di Maria et al, 2020;Pedraza et al, 2021) to manufacture construction products with CCU of industrial solid waste, some technology and energy scenarios can be evaluated with LCA. Other characteristics of construction products can also be compared with LCA, such as chemical properties, which leads to investigate a wider set of scenarios, e.g.…”

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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…In the case study, we have shown its applicability to a thermochemical process for the production of the chemical DMC. In addition to that we have applied the Efferi framework (in earlier versions) to thermochemical processes for the production of fuels, [ 73,74 ] minerals, [ 76 ] polymers [ 77 ] and an electrochemical process for the production of ethylene [ 78 ] —proving its applicability for all major technology fields of CCU.…”

Section: Discussionmentioning

confidence: 99%

Apples and Apples: A Shortcut Assessment Framework for Early‐Stage Carbon Capture and Utilization Technologies Based on Efficiency, Feasibility, and Risk

2021

View full text Add to dashboard Cite

Climate change is one of the largest current challenges to humankind, requiring a steep emissions reduction. One promising approach is using CO2 as a resource. Research and development of carbon capture and utilization (CCU) technologies have increased in recent years, putting early‐stage techno‐economic assessment (TEA) in a key role to derive recommendations systematically, to allocate resources efficiently, and overall to push commercialization successfully. Shortcut TEA assessment approaches that reduce assessment detail and effort compared with conventional, full‐scope studies have gained popularity in recent years but have been criticized as comparing apples with oranges. Several open methodological questions remain such as how to implement global assessment standards, how to reduce subjective judgments, and how to compare technologies at different maturities. Herein, a shortcut assessment framework for early‐stage CCU technologies is proposed, based on the perspectives of efficiency, feasibility, and risk (Efferi). The Efferi framework implements the Global CO2 Initiative's Guidelines, enables comparisons at different technology maturities, and systematically reduces subjective judgments. The Efferi framework provides a starting point for a more robust and easy assessment of early‐stage CCU technologies, leading to clearer go/no‐go recommendations at reduced assessment effort and enabling fairer, “apples to apples” comparisons.

show abstract

“…Reducing global warming requires nearly zero long-term, man-made emissions.This means that, while some human works emit huge greenhouse gases to the atmosphere, others remove the same amount, leading to a net-zero balance. Limiting grubarp walmingp uup 2•Cp luqeilucp uup luashp nuu-zero emissions by 2100 [1][2]. Consequently, coal-fired power plants beside a variety of industries, such as cement, steelmaking, and petrochemical industries, emit very large amounts of carbon dioxide that contribute to climate change through global warming of the earth.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, coal-fired power plants beside a variety of industries, such as cement, steelmaking, and petrochemical industries, emit very large amounts of carbon dioxide that contribute to climate change through global warming of the earth. The global CO2 emission from cement industry was 2.30±0.20 gt CO2 in 2020, which is around 8.6% of the global CO2emissions [1][2][3]. While the global demand for cement is expected to increase by 12% to 23% in 2100. International Energy Agency (IEA) predicts that direct CO2 emissions from cement production will roughly increase 4.1% in the same period [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The carbonated materials maythen be used as fillers for blended cement production [14][15] or can replace OPC in some heavy applications. Cement kiln dust is produced at kiln inlet, with a temperature around 800 • C to 1000 • C of the clinker [16][17][18]. The geopolymer can be produced from any material consists of alumino/silicate reactive materials with few amount of CaO component like metakaoline and strangely alkaline solution.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Environmental safe disposal of cement kiln dust for the production of ‎geopolymers

et al. 2021

View full text Add to dashboard Cite

A large amount of industrial byproducts are released from heavy industries such as power generation industry, steel industry, cement industry, etc. These wastes or byproducts like fly ash, CKD, bottom ash, blast furnace slag, methakaoline, etc. pose various difficulties in getting rid of them. May the dynamic solution is to use these byproducts for some other beneficial application.Clearly, cement industry has been found to be an energy-intensive industry that acts as a major source of greenhouse gas emissions especiallycarbon dioxide, so, with the continuous growth of construction activities, cement industry will last for a long time due to the need for high infrastructure.Recycling of industry wastes will enhance their economical and environmental values. Production of geopolymers from the wastes of cement industry (CKD) defiantly save the raw materials, and reduce the CO2 emissions. In this work, local raw materials are used such as blast furnace slag, silica fume, CKD, metakaolineand alkaline activated solution of potassium hydroxide and potassium silicate has a molar ratio of K2O:SiO2 (0.7).The products obtained were tested for unconfined compressive strength setting time and workability, results show that it possible to produce good quality geopolymers ( ecuderp lufesu p) using industrial by-products as precursors.

show abstract

On the road to net zero-emission cement: Integrated assessment of mineral carbonation of cement kiln dust

Cited by 48 publications

References 49 publications

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

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

Apples and Apples: A Shortcut Assessment Framework for Early‐Stage Carbon Capture and Utilization Technologies Based on Efficiency, Feasibility, and Risk

Environmental safe disposal of cement kiln dust for the production of ‎geopolymers

Contact Info

Product

Resources

About