- Tytuł:
- Cyclical metal adsorption and desorption through sludge immobilized in chitosan media
- Autorzy:
-
Kuczajowska-Zadrożna, Małgorzata
Filipkowska, Urszula
Jóźwiak, Tomasz
Szymczyk, Paula - Powiązania:
- https://bibliotekanauki.pl/articles/1034744.pdf
- Data publikacji:
- 2016
- Wydawca:
- Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
- Tematy:
-
adsorption
chitosan
desorption
heavy metal
immobilization - Opis:
- In this research, a cyclical adsorption/desorption of cadmium and zinc from solutions containing a single metal or its mixture in ratio of 1:1 and 1:2 using immobilized activated sludge in the chitosan (ASC) was examined. In the adsorption studies, the optimal dose of ASC was 4 g/L. The highest desorption efficiency was achieved for 1M HNO3. Both adsorption and desorption occurred in accordance with a pseudo-second order reactions which is confirmed by R2 values. Mass of zinc adsorbed and desorbed in one cycle from a solution containing a single metal was 0.78 and 0.40 mmol/g d.w. when cadmium was lower (respectively 0.41 and 0.21 mmol/g d.w.). In subsequent cycles, both metals were adsorbed and desorbed at a lower efficiency. The highest efficiency of desorption was observed for a mixture of Cd:Zn in the ratio of 1:1 and 1:2, respectively 86% and 89% of cycle1, whereas for the zinc it was 70% and 53%. Desorption efficiency of both metals and its mixtures, in subsequent cycles gradually decreased.
- Źródło:
-
Progress on Chemistry and Application of Chitin and its Derivatives; 2016, 21; 135-146
1896-5644 - Pojawia się w:
- Progress on Chemistry and Application of Chitin and its Derivatives
- Dostawca treści:
- Biblioteka Nauki