Search results for "Énergie renouvelable"

showing 2 items of 2 documents

Designing biochar properties through the blending of biomass feedstock with metals: Impact on oxyanions adsorption behavior

2018

Metal-blending of biomass prior to pyrolysis is investigated in this work as a tool to modify biochar physico-chemical properties and its behavior as adsorbent. Six different compounds were used for metal-blending: AlCl3, Cu(OH)2, FeSO4, KCl, MgCl2 and Mg(OH)2. Pyrolysis experiments were performed at 400 and 700 °C and the characterization of biochar properties included: elemental composition, thermal stability, surface area and pore size distribution, Zeta potential, redox potential, chemical structure (with nuclear magnetic resonance) and adsorption behavior of arsenate, phosphate and nitrate. Metalblending strongly affected biochars' surface charge and redox potential. Moreover, it incre…

LangmuirEnvironmental EngineeringP06 - Sources d'énergie renouvelableHealth Toxicology and Mutagenesishttp://aims.fao.org/aos/agrovoc/c_290360208 environmental biotechnology02 engineering and technology010501 environmental sciences01 natural sciencesRedoxchemistry.chemical_compoundAdsorptionBiocharPhysico-chemicalBiomasseZeta potentialEnvironmental ChemistrySurface chargeBiomassOxydation0105 earth and related environmental scienceshttp://aims.fao.org/aos/agrovoc/c_26874Designer biocharMetalPublic Health Environmental and Occupational HealthArsenateGeneral MedicineGeneral ChemistryOxyanionPore size distributionMétalPollutionMetal-blendingU50 - Sciences physiques et chimie020801 environmental engineeringhttp://aims.fao.org/aos/agrovoc/c_926chemistryChemical engineeringMetalsCharcoalCharbonPyrolyseAdsorptionhttp://aims.fao.org/aos/agrovoc/c_5472Pyrolysishttp://aims.fao.org/aos/agrovoc/c_1693
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Study of economic availability related to rare metals in the context of the energy transition

2014

A growing number of academic studies and international organizations reports have noticed an increasing dependency of new energy technologies on a specific class of natural resources often called minor metals. For several years, worries about economic availability of these metals in order to realize the energy transition have appeared. This thesis aims at underline the broader risks and constraints involved by general use of these metals in new energy technologies. A first part of this thesis is devoted to theories and indicators related to the depletion of non renewable resources. This part also shows that minor metals share many characteristics and that they can form a group of metal cons…

Renewable energyMétaux mineursExhaustionÉnergie renouvelableMétaux raresTransition énergétiqueRare metalsÉpuisementSous produitByproductMinor metals[SHS.ECO] Humanities and Social Sciences/Economics and FinanceEnergy transition
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