Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 170, Issue 1, Pages 43-50Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2009.04.131
Keywords
Moringa oleifera; Alizarin Violet 3R; Dye removal; Natural coagulant agents; Flocculation
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Funding
- Programa de Iniciacion a la Investigacion
- Universidad de Extremadura
- COMISION INTERMINISTERIAL DE CIENCIA Y TECNOLOGIA (CICYT) CTQ [2007-60255/PPQ]
- JUNTA DE EXTREMADURA [PRI-07A031]
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In this paper the ability of two natural products in removing dyes has been tested. After a preliminary screening for dye removal capacity, a tannin-based coagulant called ACQUAPOL C-1 and a vegetal protein extract derived from Moringa oleifera seed have been fully studied. The influence of several parameters such as pH, temperature or initial dye concentration (IDC) have been tested and the behavior of both coagulants has been compared. pH results to be an interesting variable and dye removal decreases as pH increases. This effect is higher in ACQUAPOL C-1 than in M. oleifera seed extract. Temperature seems not to be so affecting parameter, while IDC appears to be a very important variable in q(c), capacity, which is higher as IDC increases. Langmuir isotherm model fits very well in both cases of ACQUAPOL C-1 and M. oleifera seed extract dye removal. (C) 2009 Elsevier B.V. All rights reserved.
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