Biosorption and removal of chromium from water by using moringa seed cake (Moringa oleifera Lam.)
AUTOR(ES)
Meneghel, Ana Paula, Gonçalves Jr., Affonso Celso, Strey, Leonardo, Rubio, Fernanda, Schwantes, Daniel, Casarin, Juliana
FONTE
Quím. Nova
DATA DE PUBLICAÇÃO
2013
RESUMO
This study evaluated the adsorption capacity of chromium from contaminated aqueous solutions by using Moringa oleifera Lam. seeds. Parameters such as solution pH, adsorbent mass, contact time between solution and adsorbent, isotherms, thermodynamic, kinetics, and desorption were evaluated. The maximum adsorption capacity (Qm) calculated to be 3.191 mg g-1 for the biosorbent. Activated carbon was used for comparison purposes in addition to the biosorbent. The best fit was obtained by the Langmuir model for both adsorbents. The average desorption value indicated that both the biosorbent and activated carbon have a strong interaction with the metal. The results showed that the biosorbent has advantages owing to its low cost and efficiency in Cr3+ removal from contaminated waters.
Documentos Relacionados
- Silício e cloreto de sódio na nutrição mineral e produção de matéria seca de plantas de moringa (Moringa oleifera Lam.)
- Influência da temperatura na germinação de moringa (Moringa oleifera Lam. - Moringaceae).
- Germinação de sementes e desenvolvimento de plântulas de moringa (Moringa oleifera Lam.) em função do peso da semente e do tipo de substrato
- Influência do substrato e da salinidade na germinação de sementes de moringa (Moringa oleífera Lam - Moringaceae).
- EVALUATION OF THE FLOCCULATION EFFICIENCY OF Chlorella vulgaris MEDIATED BY Moringa oleifera SEED UNDER DIFFERENT FORMS: FLOUR, SEED CAKE AND EXTRACTS OF FLOUR AND CAKE