Sorption of lead (II) and strontium (II) ions from aqueous solutions onto non-living Chlorella Vulgaris Alga/ Date pit activated carbon composite
| Autor: | H. S. Hassan, E. A. A. El-Shazly, G. A. Dakroury |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Strontium
Materials science Aqueous solution Renewable Energy Sustainability and the Environment Process Chemistry and Technology Organic Chemistry Chlorella vulgaris Composite number Energy Engineering and Power Technology chemistry.chemical_element Sorption Inorganic Chemistry chemistry Monolayer Materials Chemistry Ceramics and Composites medicine Saturation (chemistry) Nuclear chemistry Activated carbon medicine.drug |
| Zdroj: | Carbon Letters. 32:495-512 |
| ISSN: | 2233-4998 1976-4251 |
| DOI: | 10.1007/s42823-021-00280-z |
| Popis: | Heavy metal pollution has a harmful impact on human health and is regarded as a vital problem. Preparation of a novel, low cost bio-sorbent for heavy metal sorption is the main target of this research. Non-living Chlorella Vulgaris Alga/Date pit activated carbon composite (1:1), (CV/AC), is a novel bio-sorbent prepared by the wet-chemical method for sorption of Pb (II) and Sr (II) from aqueous media. The optimum pH for sorption reaction is 5 and the equilibrium time is achieved within 1 h. The sorption efficiencies are 90.5% for Pb(II) and 95.7% for Sr(II) with initial concentration Co 10 mg L–1 at 298 K. The monolayer sorption capacities of CV/AC composite at 298 K and pH = 5 were 6.34 ± 0.059, 5.97 ± 0.22 mg g–1. The saturation capacities were 98.5 and 125 mg g–1 for Pb (II) and Sr (II), respectively after 10 days. The sorption process is a spontaneous and endothermic reaction. It follows a pseudo-2nd-order mechanism. The results are suggestive of the need to adopt CV/AC composite as a potential bio-sorbent of Pb (II) and Sr (II) for waste water treatment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink