Biosorption of Strontium from Simulated Nuclear Wastewater by Scenedesmus spinosus under Culture Conditions: Adsorption and Bioaccumulation Processes and Models
| Autor: | Mingxue Liu, Shiyong Sun, Wei Zhang, Ting Huang, Xiaoqin Nie, Hongfu Wei, Wu Kang, Faqin Dong, Yuanyuan Liu, Guo Yuting |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Health
Toxicology and Mutagenesis Cell Culture Techniques chemistry.chemical_element lcsh:Medicine Wastewater Models Biological Article Scenedesmus spinosus Adsorption Dry weight Algae Botany Strontium biology lcsh:R Public Health Environmental and Occupational Health Biosorption biosorption adsorption bioaccumulation strontium kinetics model biology.organism_classification chemistry Absorption Physicochemical Bioaccumulation Environmental chemistry Radioactive Waste Sewage treatment Scenedesmus |
| Zdroj: | International Journal of Environmental Research and Public Health International Journal of Environmental Research and Public Health, Vol 11, Iss 6, Pp 6099-6118 (2014) International Journal of Environmental Research and Public Health; Volume 11; Issue 6; Pages: 6099-6118 |
| ISSN: | 1660-4601 1661-7827 |
| Popis: | Algae biosorption is an ideal wastewater treatment method when coupled with algae growth and biosorption. The adsorption and bioaccumulation of strontium from simulated nuclear wastewater by Scenedesmus spinosus were investigated in this research. One hundred mL of cultured S. spinosus cells with a dry weight of 1.0 mg in simulated nuclear wastewater were used to analyze the effects on S. spinosus cell growth as well as the adsorption and bioaccumulation characters under conditions of 25 ± 1 °C with approximately 3,000 lux illumination. The results showed that S. spinosus had a highly selective biosorption capacity for strontium, with a maximum bioremoval ratio of 76%. The adsorbed strontium ion on cell walls was approximately 90% of the total adsorbed amount; the bioaccumulation in the cytoplasm varied by approximately10%. The adsorption quantity could be described with an equilibrium isotherm. The pseudo-second-order kinetic model suggested that adsorption was the rate-limiting step of the biosorption process. A new bioaccumulation model with three parameters was proposed and could give a good fit with the experiment data. The results suggested that S. spinosus may be a potential biosorbent for the treatment of nuclear wastewater in culture conditions. |
| Databáze: | OpenAIRE |
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