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DTU Studieprojekt - Water purification by adsorption drawing lessons from natural sands

Danmarks Tekniske Universitet (DTU)



Water purification by adsorption drawing lessons from natural sands

Udbyder
Vejleder
Sted
København og omegn
Background
The availability of potable water is one of the most important prerequisites for supporting life. Unfortunately, the ever increasing human activities result in the discharge of tremendous amounts of a wide variety of toxic chemicals into natural water reservoirs, either directly or via wastewater treatment plants. The latter are often unable to remove emerging contaminants such as plasticisers, analgesics, antidepressants, sunscreen agents, etc. Among several potential new technologies aiming at removing such substances from water, adsorption on various kinds of particles is considered as a cheap and efficient alternative. Unfortunately, most adsorption studies concentrate on either artificially synthesised nanoparticles that must be reclaimed from water after use and involve a risk of release of undesirable elements, or on carbon frameworks or organic waste from industrial activities, which cannot be regenerated by means of simple thermal treatments. Natural sand is a well-known adsorbent that is been used for preliminary water filtration. However, preliminary results aiming at evaluating its efficiency at removing emerging pollutants from water show significant differences depending on the sand origin. This suggests that some sand constituents are more efficient than others. The goal of this project is to select two or three mineral compounds present in natural sand and to conduct systematic studies on these compounds, which will be produced artificially in order to better control their characteristics.

During this project you are going to:
-Synthetise inorganic compounds in the form of powders with different particle size distributions and specific surface area.

-Characterise your samples by means of X-ray diffraction, electron microscopy, energy dispersive X-ray spectroscopy, etc.

-Study the decolouration of water samples containing industrial dyestuff using UV-Vis spectroscopy.

-Investigate the influence of various parameters such as e.g. particle morphology and surface treatment.

-Analyse your results using theoretical models and compare them with published data.

-Estimate the energy input of the process during its full cycle including regeneration.

Learning objectives:
At the end of this project you will be able to:

-Explain the principles of adsorption and of its potential applications for water pollution abatement.

-Use various experimental characterization tools (UV-Vis spectroscopy, X-ray diffraction, electron microscopy, thermal analysis, FTIR spectroscopy) and explain their basic principles as well as limitations.

-Critically evaluate your results.

-Draw links between experimental parameters, microstructure and performance.

-Perform an efficient literature search and compare your own results to published data.

-Present your results in an attractive way.

-Write the draft of a scientific publication.

Contact: Jean-Claude Grivel (jean@dtu.dk) – DTU Energy, building 301

Emneord

  • Energi
  • Bioenergi
  • Brændselsceller
  • Elforsyning
  • Energieffektivisering
  • Energilagring
  • Energiproduktion
  • Energisystemer
  • Kraftværker
  • Solenergi
  • Vindenergi
  • Klimatilpasning
Kontakt
Virksomhed/organisation
DTU Energi

Navn
Jean-Claude Grivel

Stilling
Seniorforsker

Mail
jean@dtu.dk

Vejleder-info
Kandidatuddannelsen i Bæredygtig Energi
Vejleder
Jean-Claude Grivel

ECTS-point
30

Type
Kandidatspeciale

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Danmarks Tekniske Universitet (DTU) - hurtigt overblik


Danmarks Tekniske Universitet (DTU)
Danmarks Tekniske Universitet (DTU)
DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 11.200 studerende uddanner sig her til fremtiden, og 6.000 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

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Anker Engelunds Vej 1
2800 Kgs. Lyngby
Logo: Danmarks Tekniske Universitet (DTU)
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