Molecular analysis of carbon dioxide adsorption processes on steel slag oxides

Bonenfant, Danielle; Kharoune, Lynda; Sauvé, Sébastien; Häusler, Robert; Niquette, Patrick; Mimeault, Murielle; Kharoune, Mourad

doi:10.1016/j.ijggc.2008.06.001

Cited by 47 publications

(19 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The affinity of oxides for carbonate formation principally depends on the strength of the chemisorptions of CO 2 and number of basic sites at the surface and varies as follows: basic oxides (CaO, MgO) > amphoteric oxides (Al 2 O 3 , Cr 2 O 3 , TiO 2 , MnO, iron oxides) > acidic oxides (SiO 2 ) (Bonenfant et al, 2009). Hence, the capacity of sequestered CO 2 for these alkaline residues depends directly on the proportion of binary oxide (CaO and MgO) and/or hydroxide (Ca(OH) 2 and Mg(OH) 2 ) content in the matrix, which are primarily responsible for the CO 2 sequestration potential (MontesHernandez et al, 2009;Bonenfant et al, 2009).…”

Section: Process Chemistrymentioning

confidence: 99%

“…Hence, the capacity of sequestered CO 2 for these alkaline residues depends directly on the proportion of binary oxide (CaO and MgO) and/or hydroxide (Ca(OH) 2 and Mg(OH) 2 ) content in the matrix, which are primarily responsible for the CO 2 sequestration potential (MontesHernandez et al, 2009;Bonenfant et al, 2009). Moreover, CaO offers more potential for chemisorptions of CO 2 than MgO due to its basic character (Bonenfant et al, 2009).…”

Section: Process Chemistrymentioning

confidence: 99%

“…The potential advantages of accelerated carbonation of applied industrial alkaline solid wastes include: (a) carbonation is an exothermal reaction and hence energy consumption and costs may be reduced by its inherent properties; (b) carbonation products such as calcium or magnesium carbonates are thermodynamically stable under ambient conditions, that is, in the absence of acidification. ; (c) it offers great sequestration capacity due to the high availability of deposits; (d) it does not require transport at sites within steel-works and is therefore cost-effective; (e) products may be beneficially reused in a variety of application, such as construction materials; (f) carbonation eliminates environmental impacts due to decreased leaching of heavy metal trace elements such as Pb, Ni, and Cd from residues and stabilizing of the waste leading to an improvement of environmental quality; and (g) it could neutralise the pH of the solution as carbonate precipitations are formed if alkaline wastewater is used as the liquid agents (Lackner, 2003;Fernandez-Bertos et al, 2004a;Huijgen et al, 2005b, c;Costa et al, 2007;Eloneva et al, 2008a;Bonenfant et al, 2009;Huntzinger et al, 2009a;Gunning et al, 2010;Lim et al, 2010). This paper focuses on accelerated carbonation of industrial alkaline wastes, e.g., steelmaking slags and metalworking wastewater.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

Pan

Chang

Chiang

2012

Aerosol Air Qual. Res.

352

193

View full text Add to dashboard Cite

CO 2 capture, utilization, and storage (CCUS) is a promising technology wherein CO 2 is captured and stored in solid form for further utilization instead of being released into the atmosphere in high concentrations. Under this framework, a new process called accelerated carbonation has been widely researched and developed. In this process, alkaline materials are reacted with high-purity CO 2 in the presence of moisture to accelerate the reaction to a timescale of a few minutes or hours. The feedstock for accelerated carbonation includes natural silicate-minerals (e.g., wollastonite, serpentine, and olivine) and industrial residues (e.g., steelmaking slag, municipal solid waste incinerator (MSWI) ash, and air pollution control (APC) residues). This research article focuses on carbonation technologies that use industrial alkaline wastes, such as steelmaking slags and metalworking wastewater. The carbonation of alkaline solid waste has been shown to be an effective way to capture CO 2 and to eliminate the contents of Ca(OH) 2 in solid residues, thus improving the durability of concrete blended with the carbonated residues. However, the operating conditions must be further studied for both the economic viability of the technology and the optimal conditions for CO 2 reaction.

show abstract

Section: Process Chemistrymentioning

confidence: 99%

Section: Process Chemistrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

Pan

Chang

Chiang

2012

Aerosol Air Qual. Res.

352

193

View full text Add to dashboard Cite

show abstract

“…Human activities generate millions of tons of CO 2 annually resulting mainly from industrial emissions whose major source of energy is the fossil fuels (Bonenfant et al, 2009;Xu and Da-qianq, 2010). The demand for iron and steel has increased tremendously in the last few decades (Vladimir, 2006).…”

Section: Introduction and Methodsmentioning

confidence: 99%

Carbon Emission Control Measures

Grema¹,

Abubakar²,

Obiukwu

2013

ILNS

View full text Add to dashboard Cite

This paper seeks to share the experience of the Ultra Low CO 2 Steelmaking programme (ULCOS) established in 2002 by a number of EU members on how to cut down CO 2 emission by at least 50 % of the present volume of emission. Global environmental challenge today is the issue of climate change resulting in devastating effects such as flooding in many countries of the world. One of the major causes is the CO 2 emission from different industries including iron and steel industries. The total global CO 2 emission was put at 29Gt in 2007 and projected to be 37Gt by the 2020. Out of this volume the steel industry accounts for 3-4 % and this call for concern from stakeholders to come up with measures to reduce or control the emission of the green house gas. These measures are necessary considering the growth of the iron and steel industry in the last 50 years. Important items considered include among others carbon emission and recovery, carbon capture and storage and new iron and steel making processes and their potential for CO 2 reduction.

show abstract

“…It also contains calcium and magnesium silicate to enhance further CC capacity of adsorbent. Since the CO 2 adsorption depends on active sites availability on surface of adsorbent with basic sites (MgO, CaO) > amphoteric sites (Al 2 O 3 ,)>acidic sites (SiO 2 ) [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Composition, Synthesis Protocol and Pellet Size of Cost Effective Adsorbents Doped with Flyash on Carbon Capture

Sreenivasulu¹,

Vyas²,

Kamani³

et al. 2016

IJESD

View full text Add to dashboard Cite

Abstract-CO 2 influe gas from anthropogenic emission is one of the major contributors for global warming among greenhouse gases (GHG). Alkaline metal oxide (CaO, MgO, etc) adsorbents got industrial importance due to its use at high temperature CO 2 capture in coal gasification to separate hydrogen gas. In this paper, we discussed on the synthesis methods of mechanical mixing, freeze granulation and dispersion methods of adsorbents for CO 2 capture. Operational issues of packed bed reactor used for CC using the alkaline earth metals doped flyash. Pore size and surface areas dependence of monolithic pellets on carbonation -calcination temperatures. CC variation with monolithic pellet size and carbonation temperatures. Breakthrough curves of adsorption for the adsorbents were discussed. Adsorbents of limestone doped with flyash were analyzed using various analytical tools and the findings were reported.Index Terms-Alkaline metal oxides doped with flyash, carbon capture, operational experiences in packed bed reactor, synthesis protocol of monolithic adsorbents.

show abstract

Molecular analysis of carbon dioxide adsorption processes on steel slag oxides

Cited by 47 publications

References 40 publications

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

Carbon Emission Control Measures

Effect of Composition, Synthesis Protocol and Pellet Size of Cost Effective Adsorbents Doped with Flyash on Carbon Capture

Contact Info

Product

Resources

About