- Tytuł:
- Enhanced adsorption of Direct Orange 26 dye in aqueous solutions by modified halloysite
- Autorzy:
-
Kuśmierek, Krzysztof
Świątkowski, Andrzej
Wierzbicka, Ewa
Legocka, Izabella - Powiązania:
- https://bibliotekanauki.pl/articles/1449288.pdf
- Data publikacji:
- 2020
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
halloysite
azo dye
Direct Orange 26
adsorption - Opis:
- The usefulness of untreated (H-NM) as well as modified by sodium benzoate (H-SB) and sulfuric acid (H-SA1 and H-SA2) halloysites as low-cost adsorbent for the removal of Direct Orange 26 azo dye from aqueous solutions was investigated. The kinetic data were evaluated in terms of the pseudo-first order and pseudo-second order kinetic models, while the equilibrium adsorption data were analyzed by the Freundlich and Langmuir isotherm equations. The data follows the pseudo-second order kinetic and Langmuir adsorption models. The DO26 adsorption capacities were 64.93, 74.07, 303.0, and 384.4 μmol/g for the H-NM, H-SB, H-SA1, and H-SA2, respectively. Adsorption of the dye was strongly pH dependent; no effect of ionic strength was observed. The study revealed that halloysites, especially acid-activated halloysites, could be used as an effective and low-cost adsorbents.
- Źródło:
-
Physicochemical Problems of Mineral Processing; 2020, 56, 4; 693-701
1643-1049
2084-4735 - Pojawia się w:
- Physicochemical Problems of Mineral Processing
- Dostawca treści:
- Biblioteka Nauki
Artykuł