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Ce travail de fin d’étude fait partie du projet Renewable qui a pour but de designer des chenaux algaux à haut rendement (CAHRs) pour le traitement d’eaux usées au Vietnam. La quantification du transfert de CO2 de l’eau à l’air, qui a très peu été étudiée pour ce type de bassin, est le sujet principal de ce travail, et une méthode pour mesurer le coefficient de transfert de masse du CO2 est développée et appliquée à petite puis à grande échelle dans différents bassins. Les tests réalisés pour mesurer les transferts d’oxygène et de CO2 sont détaillés et les résultats obtenus sont analysés. La relation entre les coefficients de transfert d’O2 et de CO2 obtenus est enfin comparée avec celle proposé par une équation couramment utilisée dans la littérature.

High rate algal pond, CO2 transfer, algae --- Ingénierie, informatique & technologie > Ingénierie chimique

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This book presents an introductory editorial paper and publications referring to current problems and challenges in the field of wastewater treatment. The published articles cover a wide range of topics (reducing the concentration of hydrogen sulfide in biogas and decreasing release of phosphate into a sludge liquor at WWTPs; water ecosystem protection from antibiotics through the use of AOP methods; tertiary wastewater treatment in bio-filtration systems assisted by the addition of hydrogen peroxide to stimulate microbial activity; odor removal using biological methods; the impact of WWTPs on the environment by taking into account energy consumption, noise, and the formation of bioaerosols; and odor nuisances), which show significant progress in the research and implementation of innovative solutions in wastewater treatment technology.

Research & information: general --- hydrogen peroxide --- high-rate biofiltration --- nitrification --- denitrification --- AOPs --- assessment of ecotoxicity --- fluoroquinolones --- high resolution mass spectrometry --- IC50 --- MIC --- QSAR --- waste ochre --- biogas --- enhanced phosphorus removal --- hydrogen sulfide --- phosphates precipitation --- wastewater treatment plant --- environment --- impact --- life-cycle assessment --- environmental impact assessment --- green building --- environmental management system --- environmental aspects --- wastewater technology --- management tool --- biodegradation --- odors --- H2S --- NH3 --- n/a

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This book is the printed edition of the Special Issue published in Materials. The book provides an overview of current international research activities in the field of friction and wear management through the laser processing of periodic surface micro- and nanostructures for technical and medical applications. Contributions of renowned scientists from academia and industry provide a bridge between the fields of tribology and laser material processing in order to foster current knowledge and present new ideas for future applications and new technologies.

History of engineering & technology --- laser-induced periodic surface structures --- laser beam interference ablation --- dry friction --- lubricated friction --- laser surface texturing --- smart surfaces --- stribeck curve --- lubricant transport --- direct laser interference patterning --- phase-field method --- laser microtexturing --- ultra-short pulsed laser --- surface characterization --- tribological characterization --- friction --- wear --- mixed lubrication --- starvation --- deterministic asperity model --- surface texturing --- film thickness --- texturing patterns --- numerical modelling --- CoCrMo --- LIPSS --- LSFL --- HSFL --- grooves --- triangular LIPSS --- lubricant additives --- laser-induced periodic surface structures (LIPSS) --- tribological properties --- Stribeck curve --- multi-scale surface texturing --- hierarchical surfaces --- numerical approaches --- friction reduction --- wear reduction --- high-rate --- laser texturing --- high-power --- laser --- tribology --- coefficient of friction --- applications --- lubricant --- nanostructure --- microstructure

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The conversion and storage of renewable energy sources is key to the transition from a fossil-fuel-based economy to a low-carbon society. Many new game-changing materials have already impacted our lives and contributed to a reduction in carbon dioxide emissions, such as high-efficiency photovoltaic cells, blue light-emitting diodes, and cathodes for Li-ion batteries. However, new breakthroughs in materials science and technology are required to boost the clean energy transition. All success stories in materials science are built upon a tailored control of the interconnected processes that take place at the nanoscale, such as charge excitation, charge transport and recombination, ionic diffusion, intercalation, and the interfacial transfer of matter and charge. Nanostructured materials, thanks to their ultra-small building blocks and the high interface-to-volume ratio, offer a rich toolbox to scientists that aspire to improve the energy conversion efficiency or the power and energy density of a material. Furthermore, new phenomena arise in nanoparticles, such as surface plasmon resonance, superparamegntism, and exciton confinement. The ten articles published in this Special Issue showcase the different applications of nanomaterials in the field of energy storage and conversion, including electrodes for Li-ion batteries and beyond, photovoltaic materials, pyroelectric energy harvesting, and (photo)catalytic processes.

nanoparticle --- nanoalloy --- catalyst --- CO2 reduction --- hydrocarbon --- synthetic fuel --- iron --- cobalt --- perovskite solar cell --- hole transport layer --- CuCrO2 nanoparticles --- thermal stability --- light stability --- aluminum ion batteries --- reduced graphene oxide --- tin dioxide --- 3D electrode materials --- mechanical properties --- TiO2 --- azo dye --- wastewater treatment --- photocatalysis --- sodium formate --- dry etching --- black silicon --- photovoltaics --- plasmonics --- heterogeneous catalysis --- nanoparticles --- single molecule localization --- super-resolution microscopy --- surface-enhanced Raman spectroscopy --- Li-ion batteries --- anodes --- intermetallics --- silicon --- composites --- nanomaterials --- coating --- mechanochemistry --- zinc sulfide --- wurtzite --- co-precipitation synthesis --- solvent recycling --- green synthesis --- scaling up --- pilot plant --- chalcopyrite compounds --- nanocrystals --- hydrothermal --- spin coating --- EIS --- conductivity --- lithium-ion batteries --- SnO2 --- nanoarray --- anode --- high-rate --- n/a

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This book is the printed edition of the Special Issue published in Materials. The book provides an overview of current international research activities in the field of friction and wear management through the laser processing of periodic surface micro- and nanostructures for technical and medical applications. Contributions of renowned scientists from academia and industry provide a bridge between the fields of tribology and laser material processing in order to foster current knowledge and present new ideas for future applications and new technologies.

History of engineering & technology --- laser-induced periodic surface structures --- laser beam interference ablation --- dry friction --- lubricated friction --- laser surface texturing --- smart surfaces --- stribeck curve --- lubricant transport --- direct laser interference patterning --- phase-field method --- laser microtexturing --- ultra-short pulsed laser --- surface characterization --- tribological characterization --- friction --- wear --- mixed lubrication --- starvation --- deterministic asperity model --- surface texturing --- film thickness --- texturing patterns --- numerical modelling --- CoCrMo --- LIPSS --- LSFL --- HSFL --- grooves --- triangular LIPSS --- lubricant additives --- laser-induced periodic surface structures (LIPSS) --- tribological properties --- Stribeck curve --- multi-scale surface texturing --- hierarchical surfaces --- numerical approaches --- friction reduction --- wear reduction --- high-rate --- laser texturing --- high-power --- laser --- tribology --- coefficient of friction --- applications --- lubricant --- nanostructure --- microstructure --- laser-induced periodic surface structures --- laser beam interference ablation --- dry friction --- lubricated friction --- laser surface texturing --- smart surfaces --- stribeck curve --- lubricant transport --- direct laser interference patterning --- phase-field method --- laser microtexturing --- ultra-short pulsed laser --- surface characterization --- tribological characterization --- friction --- wear --- mixed lubrication --- starvation --- deterministic asperity model --- surface texturing --- film thickness --- texturing patterns --- numerical modelling --- CoCrMo --- LIPSS --- LSFL --- HSFL --- grooves --- triangular LIPSS --- lubricant additives --- laser-induced periodic surface structures (LIPSS) --- tribological properties --- Stribeck curve --- multi-scale surface texturing --- hierarchical surfaces --- numerical approaches --- friction reduction --- wear reduction --- high-rate --- laser texturing --- high-power --- laser --- tribology --- coefficient of friction --- applications --- lubricant --- nanostructure --- microstructure