WorldCat Identities

Lyczko, Nathalie

Works: 8 works in 10 publications in 2 languages and 17 library holdings
Roles: Other, Author, Opponent
Publication Timeline
Most widely held works by Nathalie Lyczko
Cristallisation du sulfate de potassium : effet des ultrasons sur la nucléation by Nathalie Lyczko( Book )

2 editions published in 2000 in French and held by 3 WorldCat member libraries worldwide

Ce travail présente une étude de l'effet des ultrasons sur la cristallisation par refroidissement de solutions aqueuses de sulfate de potassium et plus particulièrement sur la nucléation primaire. Une première partie porte sur l'étude expérimentale de la mesure de la largeur de la zone métastable et du temps d'induction dans un cristallisoir de 200 cm 3 agité magnétiquement. Deux types d'expériences ont été réalisées, avec et sans ultrasons. ceux-ci sont émis par une sonde plongeante à la fréquence de 20 khz. Les puissances ultrasonores utilisées sont de 0,05 et 0,12 w/g solution. Les résultats expérimentaux ont permis de montrer que les ultrasons permettent d'accélérer la vitesse d'apparition du solide. Dans une deuxième partie, les mêmes expériences de temps d'induction ont été réalisées dans un cristallisoir de 1 litre agité mécaniquement où les ultrasons sont appliqués par le bas du cristallisoir à une fréquence de 20khz. La puissance ultrasonore dissipée était de 0,03 w/g solution. Les conclusions sont identiques : accélération de la vitesse d'apparition du solide. Nous avons exploité les résultats expérimentaux avec les modèles classiques de nucléation. La validité de ces modèles peut apparemment être remise en cause lorsque les ultrasons sont utilisés. Les cristaux de sulfate de potassium obtenus expérimentalement ont été caractérisés en termes de morphologie, porosité, nombre et diamètres moyens. Les résultats obtenus ont été identiques dans les deux cristallisoirs. Les ultrasons permettent d'obtenir des cristaux plus petits et plus nombreux sans modifier le réseau cristallin. Par contre, lorsque les ultrasons sont appliqués, une porosite intra-granulaire apparaît. Cette porosité augmente avec la puissance ultrasonore mais le diamètre moyen des pores reste inchangé
Effect of Oil Content on Biogas Production, Process Performance and Stability of Food Waste Anaerobic Digestion by Olumide Wesley Awe( )

1 edition published in 2017 in English and held by 2 WorldCat member libraries worldwide

Hydroxyapatite starting from calcium carbonate and orthophosphoric acid: synthesis, characterization, and applications by Doan Pham Minh( )

1 edition published in 2014 in English and held by 2 WorldCat member libraries worldwide

A Review of Biogas Utilisation, Purification and Upgrading Technologies by Olumide Wesley Awe( )

1 edition published in 2017 in English and held by 2 WorldCat member libraries worldwide

Current Status and Outlook of Odor Removal Technologies in Wastewater Treatment Plant by Baiming Ren( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Transport of organic solvents through natural rubber/nitrile rubber/organically modified montmorillonite nanocomposites by Hanna J Maria( )

1 edition published in 2013 in English and held by 2 WorldCat member libraries worldwide

Hydrogen-Rich Gas Production from Steam Gasification of Bio-char in the Presence of CaO by Jun Dong( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Transforming alum sludge into value-added products for various reuse by Baiming Ren( )

2 editions published in 2019 in English and held by 2 WorldCat member libraries worldwide

The production of drinking water always accompanied by the generation of water treatment residues (WTRs). Alum sludge is one of the WTRs, it is an easily, locally and largely available by-product worldwide. This work focuses on the identification of different ways to valorize the alum sludge for environmentally friendly reuse. Two alum sludges collected from France and Ireland have been reused in various fields as a function of their characteristics. Firstly, alum sludge was used as a partial replacement for clay in brick making, by incorporating different percentages of alum sludge and calcined at different temperatures (range from 800 to 1200 °C). The resultant bricks were tested for compression, Loss on Ignition, water absorption, appearance, etc. Results show that alum sludge-clay bricks have met the “European and Irish Standards” and demonstrated the huge industrial application potential for alum sludge in Irish clay brick manufacturing. Glyphosate is an active ingredient in pesticide which is massive employed in agriculture. Alum sludge and Irish peat were compared for glyphosate removal in pot tests, results show that alum sludge present significant glyphosate removal capacity (>99 %) and could reduce the level of Chemical Oxygen Demand (COD). It provided a scientific clue for sorbents selection when considering the agricultural wastewater treatment in Ireland and to maximize their value in practice. The co-conditioning and dewatering of sewerage sludge with liquid alum sludge was also investigated in Jar-test based on the case analysis of a water industry in France. Results show that the optimal sludge mix ratio is 1:1, the use of the alum sludge has been shown to beneficially enhance the dewaterability of the resultant mixed sludge, and highlighting a huge polymer saving (14 times less than the current technologies) and provided a sustainable and technical sludge disposal route for the local water industry. The use of alum sludge as a sorbent for gas purification was studied by H2S adsorption experiments in a fixed-bed reactor with various operating parameters. The experimental breakthrough data were modeled with empirical models based on adsorption kinetics. Results show that alum sludge is an efficient sorbent for H2S removal (capacity of 374.2 mg/g) and the mechanisms including dissociative adsorption and oxidation were proposed. Moreover, the overall mass transfer coefficients were calculated which could be used for the process scaling up. Finally, alum sludge cakes were reused in the novel aerated alum sludge constructed wetland (CW), which were designed for simultaneous H2S purification and wastewater treatment. Results show that H2S was completely removed in the six months' trials, while the high removal efficiencies of COD, total nitrogen (TN), total phosphates (TP) were achieved. Thus, a novel eco-friendly CW for simultaneous H2S purification and wastewater treatment was developed. In the different approaches and process considered, in particular it was put in investigating and describing the mechanisms involved. Overall, this work demonstrated alum sludge could be a promising by- product for various novel beneficial reuse rather than landfilling and provided a “Circular Economy” approach for WTRs management
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  Kids General Special  
Audience level: 0.96 (from 0.92 for Cristallis ... to 0.97 for Cristallis ...)

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