References of "Aatach, Mohamed"
     in
Bookmark and Share    
See detailIntegration of Composites for Greener Engine - Rapport scientifique & technique
Aatach, Mohamed ULg; Gaydardzhiev, Stoyan ULg

Report (2016)

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main ... [more ▼]

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main parts of this project. The focus is on the review of technologies, reuse and resulting properties on the recycling of fibre reinforced polymers and the development of new processes for end-of-life aerospace grade advanced carbon fiber reinforced composite materials (electrodynamic and conventional fragmentation, physicochemical characterization, environmental impact assessment, etc.) [less ▲]

Detailed reference viewed: 44 (3 ULg)
See detailIntegration of Composites for Greener Engine - Rapport scientifique & technique
Aatach, Mohamed ULg; Gaydardzhiev, Stoyan ULg

Report (2016)

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main ... [more ▼]

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main parts of this project. The focus is on the review of technologies, reuse and resulting properties on the recycling of fibre reinforced polymers and the development of new processes for end-of-life aerospace grade advanced carbon fiber reinforced composite materials (electrodynamic and conventional fragmentation, physicochemical characterization, environmental impact assessment, etc.) [less ▲]

Detailed reference viewed: 30 (14 ULg)
See detailIntegration of Composites for Greener Engine - Rapport scientifique & technique
Aatach, Mohamed ULg; Gaydardzhiev, Stoyan ULg

Report (2015)

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main ... [more ▼]

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main parts of this project. The focus is on the review of technologies, reuse and resulting properties on the recycling of fibre reinforced polymers and the development of new processes for end-of-life aerospace grade advanced carbon fiber reinforced composite materials (electrodynamic and conventional fragmentation, physicochemical characterization, environmental impact assessment, etc.) [less ▲]

Detailed reference viewed: 18 (5 ULg)
See detailIntegration of Composites for Greener Engine - Rapport scientifique & technique
Aatach, Mohamed ULg; Gaydardzhiev, Stoyan ULg

Report (2015)

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main ... [more ▼]

The project's objective is to achieve a greater integration of composite materials in the low-pressure compressor, major product of Techspace Aero. The recycling of composite materials is one of the main parts of this project. The focus is on the review of technologies, reuse and resulting properties on the recycling of fibre reinforced polymers and the development of new processes for end-of-life aerospace grade advanced carbon fiber reinforced composite materials (electrodynamic and conventional fragmentation, physicochemical characterization, environmental impact assessment, etc.) [less ▲]

Detailed reference viewed: 23 (5 ULg)
See detailRécupération de métaux stratégiques issus de diodes électroluminescentes (DELs)
Aatach, Mohamed ULg

Master's dissertation (2014)

While Light-Emitting Diodes (LEDs) are becoming increasingly widespread globally, recycling of LEDs is not yet commonplace. And yet, they contain a number of strategic metals as defined by the European ... [more ▼]

While Light-Emitting Diodes (LEDs) are becoming increasingly widespread globally, recycling of LEDs is not yet commonplace. And yet, they contain a number of strategic metals as defined by the European Commission. However, their composition and design in the broad sense are not always known. LEDs for General Lighting and LED Backlights will soon form a significant stream of waste which will need to be dealt with more effectively and efficiently. In doing so, those strategic resources would not be lost and would remain relevant in practical terms. This thesis provides an overview of technologies with relevance to LEDs and examines the recovery of strategic metals from end-of-life LEDs. The main material product of this study focuses on a batch of SMD RGB (Surface Mounted Diode Red Green Blue) LEDs. An elemental characterization consisting of a quantitative analysis by inductively-coupled plasma spectrometry and a qualitative analysis by X-ray fluorescence spectrometry was carried out. Once the composition of the study material was known, several tests of leaching in sulphuric acid were conducted to assess the influence of the mode of release of the target metal, the addition of a ferric oxidant and the pH of solution. Subsequently, it was determined that the prior crushing of the material, the presence of a ferric oxidant and the maintenance of a low pH offered the best conditions amongst those investigated for the solubilization of three elements of interest - copper, silver and gallium - while concentrating the gold in the filter cake. Some silver cementation tests by iron, copper or zinc powder were also undertaken. Finally, on basis of conclusions from the carried out investigations, this work offered two methods for recovering of copper, silver, gallium and gold present in SMD RGB LEDs by hydrometallurgical processes [less ▲]

Detailed reference viewed: 39 (7 ULg)