Comparison of the Biological and Chemical Synthesis of Schwertmannite at a Consistent Fe2+ Oxidation Efficiency and the Effect of Extracellular Polymeric Substances of Acidithiobacillus ferrooxidans on Biomineralization
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Experimental Setting
2.2.1. Comparison of the Biological and Chemical Synthesis of Schwertmannite at a Consistent Fe2+ Oxidation Efficiency
2.2.2. Comparison of the Biological and Chemical Synthesis of Schwertmannite on As(III) Adsorption
2.2.3. Comparison of Schwertmannite before and After Stripping of the EPS
2.3. Analytical Procedures
3. Results and Discussion
3.1. Comparison of Fe2+ Oxidation Efficiency and the Total Fe Precipitation Efficiency in Biological Versus Chemical Mineralization Systems
3.2. The XRD Patterns and SEM Images of the Biologically and Chemically Synthesized Schwertmannite
3.3. Comparison of the Biological and Chemical Synthesis of Schwertmannite on As(III) Adsorption
3.4. Effects of A. ferrooxidans on Schwertmannite Synthesis before and after Stripping of the EPS
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Treatment | Median Diameter (d50) (μm) | Specific Surface Area (m2·g−1) | n(Fe)/n(S) | Mineral Chemical Formula |
---|---|---|---|---|
A. f | 1.62 | 68.23 | 6.15 | Fe8O8(OH)5.24(SO4)1.30 |
A. f+EPS | 1.65 | 56.76 | 5.92 | Fe8O8(OH)5.19(SO4)1.35 |
A. f−EPS | 1.21 | 86.43 | 4.87 | Fe8O8(OH)4.23(SO4)1.64 |
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Song, Y.; Liu, Y.; Wang, H. Comparison of the Biological and Chemical Synthesis of Schwertmannite at a Consistent Fe2+ Oxidation Efficiency and the Effect of Extracellular Polymeric Substances of Acidithiobacillus ferrooxidans on Biomineralization. Materials 2018, 11, 1739. https://doi.org/10.3390/ma11091739
Song Y, Liu Y, Wang H. Comparison of the Biological and Chemical Synthesis of Schwertmannite at a Consistent Fe2+ Oxidation Efficiency and the Effect of Extracellular Polymeric Substances of Acidithiobacillus ferrooxidans on Biomineralization. Materials. 2018; 11(9):1739. https://doi.org/10.3390/ma11091739
Chicago/Turabian StyleSong, Yongwei, Yelin Liu, and Heru Wang. 2018. "Comparison of the Biological and Chemical Synthesis of Schwertmannite at a Consistent Fe2+ Oxidation Efficiency and the Effect of Extracellular Polymeric Substances of Acidithiobacillus ferrooxidans on Biomineralization" Materials 11, no. 9: 1739. https://doi.org/10.3390/ma11091739