Journalartikel

Jahr der Veröffentlichung: 2018

Zeitschrift: PLoS ONE

Bandnummer: 13

Heftnummer: 10

ISSN: 1932-6203

Open Access Status: Gold

DOI Link: https://doi.org/10.1371/journal.pone.0205590

Verlag: Public Library of Science

Abstract: 
In the present study, a comprehensive approach to the biosorption process was proposed. Biosorption of Cr(III), Mn(II) and Mg(II) ions by a freshwater macroalga Cladophora glomerata was examined using several advanced techniques including FTIR (Fourier Transform Infrared Spectroscopy), ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometry) and SEM-EDX (Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy). The enriched biomass can become a valuable, bioactive feed additive for different breeds of animals. Additionally, the collected algal biomass was soaked in water in order to reduce the content of carbohydrate, what is especially important for animals with metabolic disorders. The content of starch was reduced by 22% but additionally some elements-mainly Si, K and P were removed from the biomass. It was shown that the natural macroalga had better biosorption properties than soaked. Cr(III) ions were sorbed by the biomass in the highest extent, then Mn(II) and finally Mg(II) ions. The content of chromium in the enriched algal biomass increased almost similar to 200 000 times, manganese similar to 75 times and magnesium similar to 4.5 times (both for Mg(II) ions used from magnesium sulphate, as well as from magnesium chloride) when compared to the natural Cladophora glomerata. In the case of the soaked biomass the increase of the content of elements in the enriched biomass was as follows similar to 17 165 times for Cr, similar to 25 times for Mn and for Mg similar to 3.5 times for chloride and 3.8 times for sulphate. The type of magnesium salt (chloride or sulphate) had no significant effect on the algal sorption capacity. The proposed mechanism of the biosorption is ion exchange in which mainly potassium participated. The applied FTIR analysis enabled the identification of the functional groups that participated in the biosorption process-mainly carboxyl and hydroxyl. The main changes in the appearance of the spectra were observed for the following wavenumbers-3300-3400; 2900; 1700; 1400-1500 and 1200-1300 cm(-1). The application of SEM-EDX proved that the metal ions were sorbed on the surface of both tested algae.

Harvard-Zitierstil: Michalak, I., Mironiuk, M. and Marycz, K. (2018) A comprehensive analysis of biosorption of metal ions by macroalgae using ICP-OES, SEM-EDX and FTIR techniques, PLoS ONE, 13(10), Article e0205590. https://doi.org/10.1371/journal.pone.0205590

APA-Zitierstil: Michalak, I., Mironiuk, M., & Marycz, K. (2018). A comprehensive analysis of biosorption of metal ions by macroalgae using ICP-OES, SEM-EDX and FTIR techniques. PLoS ONE. 13(10), Article e0205590. https://doi.org/10.1371/journal.pone.0205590