Development of a new treatment process of waste concrete for CO2 reduction in cement industry

Katsuyama, Yasuro; Iizuka, Atsushi; Yamasaki, Akira; Fujii, Minoru; Kumagai, Kazukiyo; Yanagisawa, Yukio

doi:10.1016/b978-008044704-9/50160-9

Cited by 5 publications

(1 citation statement)

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“…The operating costs would also depend largely on the purity of the PCC product. An average cost of US$80 was required per ton of the PCC production from two-stage carbonation using cement wastes at 50°C and 30 bar, where the energy consumption including pulverization, carbonation, CO 2 separation, CO 2 pressurization, and stirring process for both extraction and carbonation were considered at a total of 52.8 MW (Katsuyama et al, 2005). On the other hand, as presented in Table 5, the energy consumption and cost evaluation of direct carbonation were found to be relatively (Skyonic, 2014) Fig.…”

Section: Cost Evaluation and Energy Consumptionmentioning

confidence: 99%

An Innovative Approach to Integrated Carbon Mineralization and Waste Utilization: A Review

Pan

Chiang

Chang

et al. 2015

Aerosol Air Qual. Res.

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Carbon dioxide (CO 2 ) emission reduction in industry should be a portfolio option; for example, the carbon capture and utilization by mineralization (CCUM) process is a feasible and proven technology where both CO 2 capture and alkaline waste treatment occur simultaneously through an integrated approach. In this study, the challengeable barriers and significant breakthroughs of CCUM via ex-situ carbonation were reviewed from both theoretical and practical perspectives. Recent progress on the performance of various carbonation processes for different types of alkaline solid wastes was also evaluated based on CO 2 capture capacity and carbonation efficiency. Moreover, several process intensification concepts such as reactor integration and co-utilization with wastewater or brine solution were reviewed and summarized. In addition, the utilization of carbonated products from CCUM as green materials including cement, aggregate and precipitate calcium carbonate were investigated. Furthermore, the current status of worldwide CCUM demonstration projects within the ironand steelmaking industries was illustrated. The energy consumption and cost analyses of CCUM were also evaluated.

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Section: Cost Evaluation and Energy Consumptionmentioning

confidence: 99%