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Bio-enrichment of heavy metals U(VI) in wastewater by protein DSR A.
- Source :
-
World Journal of Microbiology & Biotechnology . Oct2022, Vol. 38 Issue 10, p1-10. 10p. - Publication Year :
- 2022
-
Abstract
- Uptaking U(VI) from the environment by biological method is an environmental friendly and efficient way. In this work, we have acquired and isolated the protein DSR A by genetic engineering, then assessed its capacity and mechanisms to absorb U(VI) from wastewater. As results, we proved that protein DSR A can precisely recognize, enrich and remove uranyl ions in simulated wastewater solution. Its great removal potential was demonstrated in the adsorption experiments, the adsorption capacity of protein DSR A can reach 182.3 mg/g in the condition at 10 mg/L U(VI) and pH = 6. The Langmuir isotherm model and the pseudo-first-order kinetic equation were used to better describe the absorption process. We can confirm that Na+, Sr2+ and K+, these three metal ions have less effect on the enrichment of U(VI) by protein DSR A compared with other common cations. Besides, we can educe some mechanisms for the removal of U (VI) by protein DSR A from the results of FTIR, SEM–EDS, XPS (binding energy = 2.0 ~ 4.0ke V), MAP and XRD analysis before and after adsorption. This work has demonstrated the great potential of genetic engineering and biological methods in dealing with environmental heavy ion pollution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09593993
- Volume :
- 38
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- World Journal of Microbiology & Biotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 158884867
- Full Text :
- https://doi.org/10.1007/s11274-022-03362-w