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Learn about volcanic, waste, and beach hazards in urban environments through student projects on volcanic activity, waste incineration residues, and beach mapping. Discover insights on hazardous materials, corrosion, and hydrogen production.
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Student Research projects on urban geoscience issues: Volcanic Hazards, Urban Waste and Beach Hazards Cristina P. De Campos Dept of Earth and Environmental Sciences / Munich GeoCenter
Volcanic Hazards: Volcanic Hazard = f (Volcanic activity X Urban Environment) Naples
Students projects: Volcanologic Excursion : 10 days trip to the Eolian Islands or Canary Islands
Waste Hazards: Soraya Heuss-Assbichler Mineralogy ofMuniciple Solid Waste Incineration Residues
20 kg material flow in a MSWI APC residue Bottom ash Boiler ash Scrap metal Volume reduction at about 90 vol.- %
metallic Aluminium 2 Al + 6 H2O 2 Al(OH)3 + 3 H2 • pH 4,5 – 8,8protective oxide film • pH > 10 • pH < 4 increasing solubility • Cl - Milieu pitting corrosion
B A Hc AlOOH Al Ett C Different types of corrosion textures in altered bottom ashesresulting in hydrogen production at alkaline reaction conditionsA) type 1 - Al particle surrounded by a rim of aluminum hydroxide, B) type 2 - multiphase rim around Al: Al hydroxide, hydrocalumite, monosulfate or ettringite, C) detail image of multiphase rim, (BSE image)
Concentration of hydrogen in landfill gas observed in a monofill in S-Germany LEL: lower explosion limit for hydrogen in contact with air
Beach Hazards Federal University of Rio de Janeiro UFRJ