Waste Marble Powders as Promising Inexpensive Natural CaO-Based Sorbents for Post-Combustion CO2 Capture
There are currently no studies in the literature on the use of natural waste marble powder (WMP) resources as inexpensive sorbents for looping cycle CO2 capture. The high volume of marble production is associated with considerable amounts of WMP generated as byproduct during cutting and polishing pr...
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Published in | Industrial & engineering chemistry research Vol. 55; no. 29; pp. 7860 - 7872 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
27.07.2016
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Online Access | Get full text |
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Abstract | There are currently no studies in the literature on the use of natural waste marble powder (WMP) resources as inexpensive sorbents for looping cycle CO2 capture. The high volume of marble production is associated with considerable amounts of WMP generated as byproduct during cutting and polishing procedures, which negatively impacts the surrounding environment. The main goal and innovative idea addressed in this study consists of investigating if solid wastes WMP from marble producer sources can be used as possible inexpensive and effective solid materials to be used as precursors of CaO-based sorbents in Ca-looping cycle CO2 post-combustion capture process. The cyclic carbonation–calcination reactions were experimentally studied in a laboratory-scale fixed-bed reactor unit for 10 and 20 cycles. The innovative and interesting results obtained show that Portuguese WMP represents a category of promising natural inexpensive solid sorbents to be used as effective CaO-based sorbents for looping cycle CO2 post-combustion capture, because of their increased CO2 carrying capacity and better cyclic stability with lower sorbent deactivation with the number of cycles, when compared with commercial CaCO3 reference sorbent precursor and with other natural and synthetic CaO-based sorbents, and other CaO-solid-based materials from industrial and natural wastes recovery, reported in the literature. The WMP resources have potential to be an economically attractive option thus contributing to reduce the cost of the Ca-looping cycle CO2 capture process, as well as to minimize the adverse environmental impacts of the high volume of WMP generated in the marble producers. |
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AbstractList | There are currently no studies in the literature on the use of natural waste marble powder (WMP) resources as inexpensive sorbents for looping cycle CO2 capture. The high volume of marble production is associated with considerable amounts of WMP generated as byproduct during cutting and polishing procedures, which negatively impacts the surrounding environment. The main goal and innovative idea addressed in this study consists of investigating if solid wastes WMP from marble producer sources can be used as possible inexpensive and effective solid materials to be used as precursors of CaO-based sorbents in Ca-looping cycle CO2 post-combustion capture process. The cyclic carbonation–calcination reactions were experimentally studied in a laboratory-scale fixed-bed reactor unit for 10 and 20 cycles. The innovative and interesting results obtained show that Portuguese WMP represents a category of promising natural inexpensive solid sorbents to be used as effective CaO-based sorbents for looping cycle CO2 post-combustion capture, because of their increased CO2 carrying capacity and better cyclic stability with lower sorbent deactivation with the number of cycles, when compared with commercial CaCO3 reference sorbent precursor and with other natural and synthetic CaO-based sorbents, and other CaO-solid-based materials from industrial and natural wastes recovery, reported in the literature. The WMP resources have potential to be an economically attractive option thus contributing to reduce the cost of the Ca-looping cycle CO2 capture process, as well as to minimize the adverse environmental impacts of the high volume of WMP generated in the marble producers. |
Author | Freitas, Cátia Pinheiro, Carla I. C Fernandes, Auguste Santos, Edgar T Ribeiro, Maria F |
AuthorAffiliation | Universidade de Lisboa CQE-Centro de Química Estrutural, Instituto Superior Técnico |
AuthorAffiliation_xml | – name: Universidade de Lisboa – name: CQE-Centro de Química Estrutural, Instituto Superior Técnico |
Author_xml | – sequence: 1 givenname: Carla I. C surname: Pinheiro fullname: Pinheiro, Carla I. C email: carla.pinheiro@tecnico.ulisboa.pt – sequence: 2 givenname: Auguste surname: Fernandes fullname: Fernandes, Auguste – sequence: 3 givenname: Cátia surname: Freitas fullname: Freitas, Cátia – sequence: 4 givenname: Edgar T surname: Santos fullname: Santos, Edgar T – sequence: 5 givenname: Maria F surname: Ribeiro fullname: Ribeiro, Maria F |
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Title | Waste Marble Powders as Promising Inexpensive Natural CaO-Based Sorbents for Post-Combustion CO2 Capture |
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