DESORPTION OF Cu2+FROM A BIOSORBENT DERIVED FROM THE MARINE ALGADURVILLAEA POTATORUM
| Autor: | Qiming Yu, Pairat Kaewsarn |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
inorganic chemicals
Chromatography Elution Process Chemistry and Technology General Chemical Engineering Biosorption Biomass chemistry.chemical_element Filtration and Separation Hydrochloric acid General Chemistry Thermal treatment Calcium chemistry.chemical_compound Adsorption chemistry Desorption Nuclear chemistry |
| Zdroj: | Separation Science and Technology. 36:1495-1507 |
| ISSN: | 1520-5754 0149-6395 |
| DOI: | 10.1081/ss-100103884 |
| Popis: | The desorption and recovery of Cu2+ from a biosorbent material derived from marine alga Durvillaea potatorum were studied. The biosorbent was a pretreated biomass of Durvillaea potatorum with calcium chloride solution and thermal treatment. The Cu2+ was adsorbed onto the biosorbent and then desorbed by various elution solutions. Batch desorption tests established a solution of 0.35 M hydrochloric acid as the most appropriate eluting agent. Fixed-bed desorption recovery curves for Cu2+ were also obtained. In addition, batch desorption recovery curves for Cu2+ were obtained for multiple consecutive adsorption–desorption cycles and the biosorption properties of the biomass for Cu2+ were compared after the fifth cycle to evaluate the stability of the biomass. The use of a mixture of 0.35 M hydrochloric acid and 0.5 M calcium chloride as the eluting agent improved the stability of the biosorbent in the multiple adsorption–desorption cycles. The desorption kinetics were similar to those observed in the ad-sorpt... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|