Characterization of chromium (III) removal from aqueous solutions by an immature coal (leonardite). Toward a better understanding of the phenomena involved
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Cita com:
hdl:2117/127851
Tipus de documentArticle
Data publicació2014-01
Condicions d'accésAccés obert
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Abstract
Removal of chromium (III) from aqueous solutions by leonardite (a low-cost adsorbent) was studied in a series of batch experiments. Stabilization of the adsorbent material with alginate beads was also investigated. The extent of adsorption was evaluated as a function of the solution pH, contact time, and the adsorbate concentration. Cr(III) removal was pH dependent, reaching a maximum at a pH range of 4–5. Kinetic studies allowed gives relevant information regarding mass transfer processes involved during the sorption process. Equilibrium data fitted well to both the Langmuir and Freundlich isotherm models and the maximum adsorption capacity turned out to be 75.2 mg Cr(III) g-1. Encapsulation of leonardite in alginate beads resulted in a slightly lower adsorption capacity.
Descripció
This is a post-peer-review, pre-copyedit version of an article published in Clean technologies and environmental policyB. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10098-013-0610-x
CitacióLao, C. [et al.]. Characterization of chromium (III) removal from aqueous solutions by an immature coal (leonardite). Toward a better understanding of the phenomena involved. "Clean technologies and environmental policyB", Gener 2014, vol. 16, núm. 1, p. 127-136.
ISSN1618-954X
Versió de l'editorhttp://link.springer.com/article/10.1007%2Fs10098-013-0610-x
Col·leccions
- Departament d'Enginyeria Minera, Industrial i TIC - Articles de revista [353]
- BIOGAP - Grup de Tractament Biològic de Contaminants Gasosos i Olors - Articles de revista [28]
- R2EM - Resource Recovery and Environmental Management - Articles de revista [210]
- Departament d'Enginyeria Química - Articles de revista [2.226]
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