Abstract
The different concentration of the different metals removed after incubation with different surfactants is measured and compared. The results show that anionic and non-ionic surfactants like SDS, Triton X 100 and NATC are able to mobilize the metals from the sediment but cationic HDTMA surfactant is unable to mobilize the metals from the sediment because of the positive charge of surfactant bound to the sediment and blocked metals inside the sediment. SDS is the best surfactant as compared to the other surfactant and releases 14% for Ni; 11% for Cu and rest of the metals (Pb, Zn, Al, Fe, and Mn) ranges from 5 to 3%. This is because the metals bounded with the surface of sediments attracted towards the negative charge of anionic surfactant instead of sediment. Therefore, the complexation of metals with surfactant micelles take place and releases metals from the sediment. The detailed mechanism of metal release is discussed in the chapter.
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Bisht, A.S. (2019). Surfactant Availability of Metals. In: Commercial Surfactants for Remediation. Advances in Geographical and Environmental Sciences. Springer, Singapore. https://doi.org/10.1007/978-981-13-0221-3_10
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DOI: https://doi.org/10.1007/978-981-13-0221-3_10
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