Kinetics of CO methanation using a Fe-bearing catalyst from a blast furnace sludge

Bravo, Paulina Melo; Jiménez, Romel; Devred, François; Debecker, Damien P.; Ulloa, Claudia; Garcı́a, Ximena

doi:10.1016/j.fuel.2020.118045

Cited by 5 publications

(2 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Notably, around 298.5 °C, aliphatic compounds in SS are predominantly converted into water, noncondensable gas, and tar. Beyond 350 °C, proteins underwent pyrolysis, decomposing into smaller molecular compounds through peptide bond cleavage . Lastly, the release of volatile gases due to the catalytic reaction of internal iron defined the third stage, at temperatures above 576 °C.…”

Section: Resultsmentioning

confidence: 99%

Bidirectional Catalysis Disintegration and Mineral Polymerization via Endogenous Iron(III) from Iron-Rich Sludge in Synergy with Waste Incineration Fly Ash

Pang,

Mao,

Jin

et al. 2023

ACS Omega

View full text Add to dashboard Cite

To enhance the utilization of solid waste in cement kiln co-processing, this study analyzed the multifaceted synergy of pyrolysis and mineralization processes of iron-rich sludge (SS) and waste incineration fly ash (FA) at optimal blending ratios. Based on the physicochemical properties of SS and co-pyrolysis experiments, it was found that Fe acted as a positive catalyst in pyrolysis between 700 and 1000 °C, while the endogenous polymerization effect of Fe(III) mineral groups dominated above 800 °C. Additionally, the study investigated the solidification and migration of heavy metals and the transformation of harmful elements (S, Cl, and P). Results indicated that the best mixture ratios for SS and FA were 6:4 and 9:1, respectively, and synergistic pyrolysis and mineral co-curing effects were observed in the pyrolysis temperature range of 50–1000 °C. The synergy between SS and FA allowed for the decomposition and solidification of harmful organic components and heavy metals, reducing environmental risks. Furthermore, in actual production, by mixing 100 tons of SS and FA with Portland cement with a daily output of 2500 tons, the compressive strength during early hydration stages can reach 34.52 MPa on the third day, exceeding the highest performance of Portland cement (62.5R) strength index specified in the standard.

show abstract

Section: Resultsmentioning

confidence: 99%

Bidirectional Catalysis Disintegration and Mineral Polymerization via Endogenous Iron(III) from Iron-Rich Sludge in Synergy with Waste Incineration Fly Ash

Pang,

Mao,

Jin

et al. 2023

ACS Omega

View full text Add to dashboard Cite

show abstract

“…Knowing that iron is a cheap alternative to nickel as a catalyst for methanation reactions, a new method was studied to produce synthetic natural gas, using BFS as a Fe donor [24]. Allied to the fact that there is a very significant amount of reducing CO in blast furnace gases and coke ovens, Fe-catalyzed methanation can be achieved.…”

Section: Ironmentioning

confidence: 99%

Potential Industrial Synergies in the Steelmaking and Metal-Processing Industry: By-Products Valorization and Associated Technological Processes

Henriques,

Castro,

Dias

et al. 2023

Sustainability

View full text Add to dashboard Cite

Steelmaking and ferrous metal processing companies are suppliers of great importance to a wide array of industries, thus being quintessential for the social and financial growth of regions and countries. Most used processes (i.e., blast furnace, basic oxygen furnace, and electric arc furnace-based) are, however, highly pollutant, generating hazardous wastes that were usually landfilled. Generated wastes are important sources of secondary raw materials such as zinc and iron, presenting interesting market value. Hence, aiming to develop green procedures, industries have been using diverse approaches to treat and detoxify hazardous wastes, extract and reuse added value components, or even use their existing infrastructures to convert the wastes generated by other industries into secondary raw materials for steel manufacturing. This paper reviews the main industrial processes, focusing on the waste-generating steps, and discloses the most recent and relevant industrial synergies toward a circular economy. The final contribution of this study consists of the compilation of industrial synergies and recovery technologies for the steelmaking and metal processes.

show abstract

Unraveling the mechanistic interplay between CO and CO2 hydrogenation over Ni, Co, and NiCo catalysts

Villagra-Soza,

Vergara,

Godoy

et al. 2024

Journal of Catalysis

View full text Add to dashboard Cite

Kinetics of CO methanation using a Fe-bearing catalyst from a blast furnace sludge

Cited by 5 publications

References 65 publications

Bidirectional Catalysis Disintegration and Mineral Polymerization via Endogenous Iron(III) from Iron-Rich Sludge in Synergy with Waste Incineration Fly Ash

Bidirectional Catalysis Disintegration and Mineral Polymerization via Endogenous Iron(III) from Iron-Rich Sludge in Synergy with Waste Incineration Fly Ash

Potential Industrial Synergies in the Steelmaking and Metal-Processing Industry: By-Products Valorization and Associated Technological Processes

Unraveling the mechanistic interplay between CO and CO2 hydrogenation over Ni, Co, and NiCo catalysts

Contact Info

Product

Resources

About