Perspectives on environmental CO2 emission and energy factor in Cement Industry

Fayomi, G.U.; Mini, S.; Fayomi, O.S.I.; Ayoola, A. A.

doi:10.1088/1755-1315/331/1/012035

Cited by 54 publications

(13 citation statements)

References 13 publications

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“…It is well known that carbon dioxide is the leading and the primary greenhouse gas with the highest percentage among other greenhouse gases. According to the National Ready Mixed Concrete Association, the production of 1 kg of concrete releases 0.9 kg of CO 2 [9]. Concrete is the most commonly used material on the planet, accounting for 8% of overall global carbon emissions [10].…”

Section: Research Significancementioning

confidence: 99%

Microbial repairing of concrete & its role in CO2 sequestration: a critical review

Bandyopadhyay

Saha²,

Ghosh³

et al. 2023

Beni-Suef Univ J Basic Appl Sci

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Background Being the most widely used construction material, concrete health is considered a very important aspect from the structural point of view. Microcracks in concrete cause water and chlorine ions to enter the structure, causing the concrete to degrade and the reinforcement to corrode, posing an unacceptable level of structural risk. Hence repair of these cracks in an eco-friendly and cost-effective way is in the interest of various researchers. Microbially induced calcite precipitation (MICP) is an effective way considered by various researchers to heal those concrete cracks along with an important environmental contribution of CO2 (carbon dioxide) sequestration in the process. Main content As the current concentration of CO2 in the earth’s atmosphere is about 412 ppm, it possesses a deadly threat to the environmental issue of global warming. The use of bacteria for MICP can not only be a viable solution to repairing concrete cracks but also can play an important role of CO2 arrestation in carbonate form. This will help in carbon level management to lessen the adverse effects of this greenhouse gas on the atmospheric environment, particularly on the climate. To overcome the insufficiency of studies concentrating on this aspect, this review article focuses on the metabolic pathways and mechanisms of MICP and highlights the value of MICP for CO2 arrestation/sequestration from the atmosphere during the process of self-healing of concrete cracks, which is also the novelty of this work. An overview of recent studies on the implementation of MICP in concrete crack repair is used to discuss and analyse the factors influencing the effectiveness of MICP in the process, including various approaches used for CO2 sequestration. Furthermore, this investigation concentrates on finding the scope of work in the same field for the most effective ways of CO2 sequestration in the process of self-healing cracks of concrete. Conclusion In a prospective study, MICP can be an effective technology for CO2 sequestration in concrete crack repair, as it can reduce adverse environmental impacts and provide greener environment. This critical study concludes that MICP can bear a significant role in arrestation/sequestration of CO2, under proper atmospheric conditions with a cautious selection of microorganisms and its nutrient for the MICP procedure. Graphical Abstract

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Section: Research Significancementioning

confidence: 99%

Microbial repairing of concrete & its role in CO2 sequestration: a critical review

Bandyopadhyay

Saha²,

Ghosh³

et al. 2023

Beni-Suef Univ J Basic Appl Sci

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“…In 2021, global CO 2 emissions surged by 5%, primarily due to a 60% increase in coal demand, as reported by Nayak et al [ 3 ] and the International Energy Agency [ 4 ]. The cement sector, a substantial contributor, stands responsible for 7% of total global CO 2 emissions [ 5 ], emits approximately 0.5–0.9 kg of CO 2 per kg of cement production, leading to annual emissions of around 3.24 billion tonnes and this trend will continue until 2050 [ 6 ]. As a consequence, a number of researchers [ [7] , [8] , [9] , [10] , [11] ] utilized FA in concrete in order to reduce cement content.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and microstructure of brick aggregate concrete with raw fly ash as a partial replacement of cement

Islam,

Noaman,

Islam

et al. 2024

Heliyon

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“…The building industry is the third largest CO 2 -emitting industry worldwide due to the levels recorded by Portland cement production. Yearly, 3.0–3.6 Gt of cement is produced, leading to around 3.24 billion tons of CO 2 (5% of the total CO 2 emissions) [ 1 ]. These kinds of numbers have determined perpetual research at the global level for finding solutions to diminish the high negative impact of this industry on the environment.…”

Section: Introductionmentioning

confidence: 99%

Study of an Ecological Cement-Based Composite with a Sustainable Raw Material, Sunflower Stalk Ash

et al. 2021

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The use of plant ash as a sustainable cementitious material in concrete composition is a widely researched subject in the construction domain. A plant studied so far more for its thermal insulation properties, sunflower, was analyzed in this study with regard to its ash effects on the concrete composition. The present research aimed to analyze the effects of a 2.5%, 5%, 7.5%, 10%, 15%, 20%, or 30% volume replacement of cement by sunflower stalk ash (SA), a sustainable cementitious material, on the concrete compressive strength at 28 days and three months, the flexural and splitting tensile strengths, the resistance to repeated freeze–thaw cycles, and the resistance to chemical attack of hydrochloric acid. The elementary chemical composition of the SA and the composites was included also. According to the experimental results, SA decreased the values of the compressive and tensile strength of the concrete, but it improved the concrete behavior under repeated freeze–thaw cycles and under the action of hydrochloric acid. A percent of 10% of SA led to a much more pronounced development of compressive strength over time than conventional concrete (26.6% versus 12%).

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Perspectives on environmental CO2 emission and energy factor in Cement Industry

Cited by 54 publications

References 13 publications

Microbial repairing of concrete & its role in CO2 sequestration: a critical review

Microbial repairing of concrete & its role in CO2 sequestration: a critical review

Mechanical properties and microstructure of brick aggregate concrete with raw fly ash as a partial replacement of cement

Study of an Ecological Cement-Based Composite with a Sustainable Raw Material, Sunflower Stalk Ash

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