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Biosorption of Trivalent Chromium from Aqueous Solution by Red Seaweed Polysiphonia nigrescens
| Content Provider | Semantic Scholar |
|---|---|
| Author | Blanes, Patricia S. Sala, Luis Federico García, S. Gonzalez, J. J. Frascaroli, María I. Harada, Masafumi Cong, Cong Niwa, Yasuhiro Matulewicz, Cristina Prado, Héctor M. Cortadi, Adriana A. Gattuso, Martha A. |
| Copyright Year | 2011 |
| Abstract | This paper presents the biosorption of chromium onto red seaweed (Polysiphonia nigrescens). Batch mode experiments were performed to determine experimental parameters affecting sorption process such as pH, contact time, initial metal ion concentration and biomass dosage. The Cr(III) sorption was dependent on pH and adsorbent dosage. The adsorption kinetic data could be fitted with a pseudo-second-order model and the equilibrium data with a Langmuir model. The maximum sorption capacity was of 16.11 mg/g at pH 4 and 10 g/L of biomass dosage. 0.1 M H2SO4 showed good desorption efficiency (>80%). Spectroscopy analysis showed that Cr(III) sorption on seaweed was mainly through the ion-exchange mechanism. This report indicates that P. nigrescens is an effective and economical sorbent for removal of Cr(III) from wastewaters. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://file.scirp.org/pdf/JWARP20111100006_86734164.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Batch processing Biomass Chromium Equilibrium Experiment Gram per Kilogram Ions Kinetics Octaviania zelleri Pseudo brand of pseudoephedrine Seizures chromic cation chromic chloride |
| Content Type | Text |
| Resource Type | Article |
