scholarly journals Corrigendum to: NRG COSIA Carbon XPRIZE: carbon-dioxide mineralization in recycled concrete wash water

Clean Energy ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 779-779
Author(s):  
Sean Monkman ◽  
Travis Janke ◽  
Alex Hanmore
Keyword(s):  
Carbon Dioxide ◽  
Recycled Concrete ◽  
Wash Water ◽  
Carbon Dioxide Mineralization

scholarly journals NRG COSIA Carbon XPRIZE: carbon-dioxide mineralization in recycled concrete wash water

Clean Energy ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 553-574
Author(s):  
Sean Monkman ◽  
Travis Janke ◽  
Alex Hanmore
Keyword(s):  
Suspended Solids ◽  
Cement Hydration ◽  
Setting Time ◽  
Recycled Concrete ◽  
Wash Water ◽  
Concrete Production ◽  
Carbon Dioxide Mineralization ◽  
A Site ◽  
Ready Mixed Concrete ◽  
Co2 Treatment

Abstract Wash water is generated as a waste stream from ready-mixed-concrete production. Reuse of the water as mixture water is limited, in practice, by the negative material performance impacts associated with the water chemistry and properties; the effects are intensified with increasing content of suspended solids and age. However, this waste material can be used as a beneficial additive to concrete by profiting from the cementitious properties of the suspended solids, if variability can be reduced. A method of stabilizing this material is through CO2 treatment. The added CO2 is mineralized through a reaction with the calcium from the cement particles. This provides a calcium-carbonate coating that prevents further cement hydration, making the material predictable. This has been shown to alleviate concerns with set acceleration and inconsistencies in compressive strength. A method of CO2 treatment was tested as part of the NRG COSIA Carbon XPRIZE at a site in Calgary, Alberta. The slurry for the treatment was provided by a local concrete plant and had a specific gravity of 1.15. The simulated wash water was treated in 1000-L quantities with each treatment mineralizing an average of 40 kg of CO2. The system ran for 1600 hours of operation over 127 treatment cycles and converted 14.5 tonnes of CO2 at an average mineralization efficiency of 80%. The treated slurry was used as an additive in >300 batches of concrete where the concrete met the necessary requirements for fresh properties and setting time, while achieving a strength benefit. Replacement of 5% and 10% of batch water with treated slurry (9.4 and 18.8 kg slurry/m3 concrete) showed a strength benefit of 3% and 6% compared to a reference. The technology was selected as the winner of the NRG COSIA Carbon XPRIZE (Track B: Natural Gas) in April 2021.

Carbon dioxide mineralization for the disposition of blast‐furnace slag: reaction intensification using NaCl solutions

2018 ◽  
Vol 10 (2) ◽  
pp. 436-448 ◽  
Author(s):  
Enze Ren ◽  
Siyang Tang ◽  
Changjun Liu ◽  
Hairong Yue ◽  
Chun Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Carbon Dioxide Mineralization ◽  
Furnace Slag

scholarly journals Carbon dioxide mineralization feasibility in the United States

2019 ◽  
Author(s):  
Madalyn S. Blondes ◽  
Matthew D. Merrill ◽  
Steven T. Anderson ◽  
Christina A. DeVera
Keyword(s):  
United States ◽  
Carbon Dioxide ◽  
The United States ◽  
Carbon Dioxide Mineralization

Beneficiation of concrete wash water with carbon dioxide

2021 ◽  
Vol 54 (2) ◽  
Author(s):  
Sean Monkman ◽  
Mark MacDonald ◽  
Larry Sutter
Keyword(s):  
Carbon Dioxide ◽  
Wash Water

The Law of Absorption of Carbon Dioxide by Rubber as a Function of the Time

1932 ◽  
Vol 5 (4) ◽  
pp. 604-607
Author(s):  
C. Cheneveau
Keyword(s):  
Carbon Dioxide ◽  
Wash Water ◽  
Vulcanized Rubber ◽  
Lime Water ◽  
Chemical Combination ◽  
Long Time ◽  
The Law ◽  
Coefficients Of Absorption ◽  
Absorption Measurements

Abstract 1. As the form of the curves shows, factice does not appear to obey the law for rubber. Calculations give values which, in relation to the observed values, show deviations of 8.5 per cent for brown factice and 13.7 per cent for white factice, whereas Table I gives smaller deviations for the different rubbers. 2. Crude rubber absorbs more than the same rubber cut into pieces, which indicates that the latter has become less porous. The absorption measurements can therefore give an idea of the porosity. It is a curious fact that if crude or cut-up rubber is boiled with alcohol the same value for the coefficient of absorption is obtained. 3. Vulcanized rubber or rubber mixed with mineral or organic fillers absorbs carbon dioxide in the same way. 4. Although Reychler has assumed that carbon dioxide dissolves in rubber, it should be noted that the law of the phenomenon of absorption is identical to that of monomolecular chemical combination. Might there not be formed therefore a compound with one of the components of the rubber? In any case, it is extremely difficult to remove the carbon dioxide from rubber, even after subjecting it to a vacuum for a long time. Moreover, if successive experiments are repeated on a single sample, it is found that the coefficients of absorption become smaller and smaller. This indicates that more and more carbon dioxide remains in the rubber. The coefficient of absorption for plantation rubber at the end of four tests changed from 0.165 to 0.141 and did not regain its value at the end of 50 days' standing. Upon washing the rubber at this stage, traces of carbon dioxide were detected in the wash water by means of lime water. 5. The study of the k coefficients, which may be called diffusion coefficients, likewise gives information about a rubber. 6. A sample left for one whole day in carbon dioxide did not appear to have altered, as judged by its elongation and tensile strength. 7. Without desiring to draw any definite conclusions from this work, it is believed that more complete tests such as those described would doubtless be of value in obtaining information about the constitution or the quality of different rubbers.

Recent Advances in Carbon Dioxide Mineralization to Nano-size Calcium Carbonate Utilizing Wastewater

2014 ◽  
pp. 103-110
Author(s):  
Zhang Ting-an ◽  
Zhao Hongliang ◽  
Liu Yan ◽  
Dou Zhihe ◽  
Lv Guozhi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Recent Advances ◽  
Carbon Dioxide Mineralization ◽  
Nano Size

scholarly journals New method for carbon dioxide mineralization based on phosphogypsum and aluminium-rich industrial wastes resulting in valuable carbonated by-products

2017 ◽  
Vol 18 ◽  
pp. 15-22 ◽  
Author(s):  
I. Romero-Hermida ◽  
A. Santos ◽  
R. Pérez-López ◽  
R. García-Tenorio ◽  
L. Esquivias ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Industrial Wastes ◽  
New Method ◽  
Carbon Dioxide Mineralization ◽  
By Products

scholarly journals The Carbon Dioxide Emissions Reduction Potential of Carbon-Dioxide-Cured Alternative Binder Concrete

2021 ◽  
Vol 03 (02) ◽  
pp. 1-1
Author(s):  
Sampo Mäkikouri ◽  
◽  
Sirje Vares ◽  
Kirsi Korpijärvi ◽  
Nikolaos Papakonstantinou ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Blast Furnace ◽  
Carbon Dioxide Emissions ◽  
Raw Materials ◽  
Carbon Sink ◽  
Human Life ◽  
Carbon Dioxide Emission ◽  
Cement Industry ◽  
Recycled Concrete ◽  
Total Carbon

Climate change has been identified as one of the biggest issues plaguing human life at present. Hence, immense attention is being paid to developing methods that can potentially reduce carbon dioxide emission. With the help of carbon-negative concrete, manufactured from alternative binders and cured with waste carbon dioxide, a major part of the manufacturing industries that emit carbon dioxide can be potentially turned into a carbon sink. In this study, the waste material streams in Finland, suitable for disposing carbon-dioxide-cured concrete, were mapped. Mine tailings, blast furnace and steel slags, recycled concrete, biomass, coal and municipal waste incineration ashes, green liquor dregs, and foundry sands were studied. It was found that there were sufficient amounts of potential secondary raw materials (about 27 Mt/a) for the preparation of Finnish cement and the production of concrete (requirement: approximately 1.4 Mt/a and 11.2 Mt/a, respectively). The total carbon dioxide uptake potential was estimated to be approximately 1.9 Mt/a (vs. emissions from the cement industry in Finland, 0.84 Mt/a). In addition, the carbon footprints of the conventionally manufactured concrete block were compared with the carbon footprint produced by a modeled carbon-dioxide-cured blast furnace slag block. If such novel concrete were used to produce all the concrete-based substances, it would bring down the emission of carbon dioxide from 1.9% to negative 1.3% in Finland.

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