Phycoremediation of heavy metals
Paper in proceedings, 2016

Increasing amounts of heavy metals is a growing societal problem. By using ion exchangers, heavy metals can be captured and thereby their environmental impact can be decreased. Microalgae have been shown to adsorb metals; the algal cell wall contains functional groups, such as amino-, carboxyl-, hydroxyl- and sulphate groups, to which the various metal ions could bind [1]. This makes them suitable as a sustainable alternative for environmental remediation. Removal of pollutants with algae is called phycoremediation and is well studied for e.g. waste water [2]. Within this project, we study the potential of microalgae for remediating heavy metals in low concentration originating from leaching of combustion ashes, by measuring the metal binding capacity by three phytoplankton species: Chlorella sauna, Dunaliella sauna and Scendesmus obliquus. The heavy metals assessed are divalent ions of copper (Cu), cadmium (Cd), zinc (Zn), mercury (Hg) and lead (Pb). The effect of pH has been determined, as well as binding over time.

mercury

zinc

cadmium

algae

ions

lead

phycoremediation

waste-water

copper

removal

mswi-bottom ash

pb

MSWI ash

heavy metals

Author

Pavleta Knutsson

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Jenny Veide Vilg

Chalmers, Biology and Biological Engineering, Food and Nutrition Science

Jesper Knutsson

Chalmers, Civil and Environmental Engineering, Water Environment Technology

Britt-Marie Steenari

Industrial Materials Recycling

Energy and Clean Technologies Conference Proceedings, Sgem 2016, Vol I

533-540

Subject Categories

Other Chemistry Topics

ISBN

978-619-7105-63-6

More information

Created

10/8/2017