References of "Benkoussas, Hana"
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See detailTowards sustainable methanol from industrial CO2 sources
Douven, Sigrid ULiege; Benkoussas, Hana ULiege; Font-Palma, Carolina et al

in North, Michael; Styring, Peter (Eds.) Carbon dioxide utilisation (2019)

Mitigation of carbon dioxide emissions from industrial facilities has received less attention than the energy sector in the path towards decarbonisation up to now. Therefore, this chapter presents ... [more ▼]

Mitigation of carbon dioxide emissions from industrial facilities has received less attention than the energy sector in the path towards decarbonisation up to now. Therefore, this chapter presents potential measures to reduce CO2 emissions through the conversion of CO2 from industrial sources into methanol in order to achieve the targets set by the European Commission. Methanol is easy to synthesise from CO2 and hydrogen and a stable liquid fuel at ambient conditions, which makes it an ideal candidate for long-term storage of electricity from variable renewable sources. If methanol is stored, it could be used to generate electricity when necessary or as transport fuel due to its high octane rating. While Europe’s contribution in the worldwide production is rather modest, Northeast Asia is the largest methanol consumer. In this work, an integrated system is proposed to re-use CO2 emitted from an ammonia plant is converted into methanol. An Aspen Plus model was developed for the three sub-processes; i) CO2 capture of an ammonia plant, that already captures CO2 as part of the hydrogen production stage, ii) water/CO2 co-electrolysis, and iii) methanol synthesis and purification. Heat integration strategies are carried out to improve the process efficiency of the integrated system. This work also discusses current and potential use of CO2 emitted from other industrial sources such as steel mills, ethanol plants and power industry. The future of CO2 conversion into methanol greatly depends on its economics compared to traditional methanol production from fossil fuels. A review of the costs for the CO2-to-methanol process is presented, where it is recognised that projects require a carbon tax to make them financially attractive. The installation of CO2-to-methanol plants could fully replace current importations in Europe, for which only about 11 plants producing each 440 t/year would be needed. A key for the growth of CO2-to-methanol facilities is that the energy required is supplied by renewable energy to truly contribute to the industry decarbonisation. As such, even higher potential is anticipated if methanol is used as a sustainable energy carrier to fulfil the so-called methanol economy. [less ▲]

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See detailSO2 effect on oxidative degradation of monoethanolamine for post combustion CO2 capture
Benkoussas, Hana ULiege; Dubrulle, Louis ULiege; Léonard, Grégoire ULiege

Poster (2018, October 23)

The most conventional amine used in the post combustion capture technology, based on chemical absorption, is monoethanolamine (MEA). Depending on the composition of the flue gas to be treated, several ... [more ▼]

The most conventional amine used in the post combustion capture technology, based on chemical absorption, is monoethanolamine (MEA). Depending on the composition of the flue gas to be treated, several mechanisms of amine degradation occur. This leads to a loss of CO2 absorption capacity and may give rise to products that are environmentally difficult to dispose of. Results from CO2 capture pilot plants showed that oxidative degradation due to the presence of oxygen in the flue gas is the main degradation pathway. Furthermore, MEA degrades when exposed to a flue gas containing an amount of sulfur dioxide (SO2). Until now there is not a clear statement about the effect of SO2 on oxidative degradation of MEA. The goal of this study is to identify the impact of the presence of SO2 on the oxidative degradation of MEA. [less ▲]

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See detailDynamic simulation of a post-combustion CO2 capture pilot with assessment of solvent degradation
Benkoussas, Hana ULiege; Léonard, Grégoire ULiege; Ioana Burca, Madalina et al

in Computer Aided Chemical Engineering (2018), 43(1341-1346),

To predict solvent degradation in an industrial CO2 capture process and for a better understanding of the interactions between solvent degradation and performance of the capture process, an existing ... [more ▼]

To predict solvent degradation in an industrial CO2 capture process and for a better understanding of the interactions between solvent degradation and performance of the capture process, an existing dynamic model of an amine based pilot plant for carbon capture has been improved and adapted at the University of Babes-Bolyai on the basis of the kinetic model of solvent oxidative degradation proposed at the University of Liège. The developed dynamic model has been used to simulate the transient behavior of the CO2 capture process with assessment of solvent degradation. [less ▲]

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See detailEffect of agitation rate on oxydative degradation of monoethanolamine
Benkoussas, Hana ULiege; Léonard, Grégoire ULiege; Kerbachi, Rabah

Poster (2017)

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See detailETUDE EXPERIMENTALE DE L’INFLUENCE DE LA DEPRESSION MECANIQUE SUR LE TRANSPORT ET LE COMPORTEMENT RHEOLOGIQUE DU MUCUS BRONCHIQUE SYNTHETIQUE DANS UNE TRACHEE ARTIFICIELLE.
Benkoussas, Hana ULiege; Seyssiecq, Isabelle; Poncet, Sebastien

in Sciences et Technologie (2016), Sciences et Technologie B(44), 39-43

Les bronches sont recouvertes d’un film de mucus qui s’écoule en permanence depuis les voies respiratoires inférieures vers la trachée, afin d’empêcher les corps étrangers d’entrer en contact avec les ... [more ▼]

Les bronches sont recouvertes d’un film de mucus qui s’écoule en permanence depuis les voies respiratoires inférieures vers la trachée, afin d’empêcher les corps étrangers d’entrer en contact avec les parois bronchiques et de contaminer l’organisme. Ce phénomène naturel porte le nom de clairance mucociliaire. Les pathologies de stagnation, d’accumulation et d’infections respiratoires chroniques conduisent à une modification rhéologique du mucus. L’objectif de cette étude est de caractériser le comportement rhéologique d’une solution synthétique simulant le mucus bronchique avant et après passage dans un appareil d’aide à la respiration et de voir l’effet des dépressions mécaniques de l’appareil sur le transport du mucus synthétique tout au long d’une trachée artificielle. Les résultats obtenus ont mis en évidence des baisses de viscosité. Les dépressions mécaniques influent sur le transport du mucus synthétique dans une trachée modèle. [less ▲]

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