Environmental impact of cement production: detail of the different processes and cement plant variability evaluation

Chen, C.; Habert, Guillaume; Bouzidi, Youcef; Jullien, Agnès

doi:10.1016/j.jclepro.2009.12.014

Cited by 579 publications

(257 citation statements)

References 21 publications

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“…The production of cement is one of the main sources of CO 2 emissions, due to the decomposition of calcium carbonate (Benhelal et al, 2012), alongside the combustion of fossil fuels. For every ton of cement produced, around 0.85 ton of CO 2 are emit ted (Ke et al, 2015) which accounts for 5 7% of the total CO 2 anthropogenic emissions (Chen et al, 2010). These data show the need to find more sustainable materials that can mitigate these CO 2 emissions, and hence contribute to the European Commission directives imposing significant emissions abatement by 2030 (Torres Carrasco and Puertas, 2015).…”

Section: Introductionmentioning

confidence: 95%

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

et al. 2016

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a b s t r a c tNowadays the stunning volume of generated wastes, the exhaustion of raw materials, and the disturbing greenhouse gases emission levels show that a paradigm shift is mandatory. In this context, the possibility of using wastes instead of virgin raw materials can mitigate the environmental problems related to wastes, while reducing the consumption of the Earth's natural resources. This innovative work reports the incorporation of unexplored waste glass coming from end of life fluorescent lamps into geopolymers.The influence of the waste glass incorporation level, NaOH molarity and curing conditions on the microstructure, physical and mechanical properties of the geopolymers was evaluated. Results demon strate that curing conditions are the most influential factor on the geopolymer characteristics, while the NaOH molarity is less important. Geopolymers containing 37.5% (wt) waste glass were successfully produced, showing compressive strength of 14 MPa (after 28 days of curing), suggesting the possibility of their use in non structural applications.Porous waste based geopolymers for novel applications were also fabricated.

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Section: Introductionmentioning

confidence: 95%

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

et al. 2016

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“…Global strategic management reported that the average annual production and consumption of cement has been steadily increasing from 2,283 million tons per year in 2005 to 2,836 million tons per year in 2010, or about 4.7% globally [12]. This industrial sector contributes to about 5-7% of total CO2 emissions worldwide [13]. These figures are corresponding to an average world carbon emission of cement production of 0.81 kg CO2 per kg [2].…”

Section: Introductionmentioning

confidence: 99%

Environmental Benefits of the Integrated Alternative Technologies of the Portland Cement Production: A Case Study in Thailand

Khongprom¹,

Suwanmanee²

2017

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Abstract. Under the 20122050, the International Energy Agency (IEA) and the World Business Council for Sustainable Development (WBCSD) have developed a roadmap for the reduction of energy and carbon intensities in cement production. The aim of this research is to study and evaluate the energy consumption (EN), global warming potential (GWP) impact, and economic assessment of Portland cement production. It was found that the total EN and GWP of conventional process were 3.29 GJ per ton of Portland cement and 0.76 ton CO2 equivalent per ton of Portland cement, respectively. The total cost was 1,346 THB per ton of Portland cement. The largest contribution was from fossil fuels used and the limestone calcination in clinker production which produced the total EN of 83.63% and the total GWP of 91.36%, and the total cost of 63%. In addition, the production of Portland cement was environmentally improved by using low carbon fuels, increasing of alternative fuels to fossil fuels ratio, and increasing of pozzolan to cement ratio. The results showed that all improvements significantly reduce the total EN, GWP, and the total cost. When the using of low carbon fuels, the increasing of alternative fuels to fossil fuels ratio, and the increasing of pozzolan to cement ratio, the EN, GWP, and the total cost were decreased by 1.68%, 18.33%, and 4.39% of the total EN and by 25.35%, 3.06%, and 10.45% of the total GWP, and by 4.6%, 4.12%, and 10.64% of the total cost, respectively.

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“…To reach the pressure of 200 bar desired at the inlet of an offshore pipeline 4 , conditioning before pipeline transport is needed. This consists of compression stages and pumping, combined with the removal of unwanted components (dehydration) 5 .…”

Section: Co 2 Transport Pipeline [24 25]mentioning

confidence: 99%

“…Cement and steel production are examples of industrial processes that will always produce CO2 as part of their production process. CO2 emissions from the cement industry represent 5% of global anthropogenic CO2 emissions [4]. In the case of cement production, CO2 is an unavoidable byproduct of the process and in order to significantly reduce the climate impact of cement production, CCS is unavoidable.…”

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confidence: 99%