Abstract
The interactions between three metals (Cu2+, Fe3+, and Al3+) and dissolved organic matter (DOM) from the effluent of the secondary sedimentation tank of wastewater treatment plant were investigated using three-dimensional excitation-emission matrix (EEM) fluorescence quenching coupled with self-weighted alternating trilinear decomposition (SWATLD) analysis. Two main components in the DOM were identified by the EEM analysis: proteins at E x /E m (230–235/345–350) nm and humic-like substances at E x /E m (340–350/425–430) nm. The conditional stability constant (log K c) was calculated to evaluate the metal complexing properties of DOM by Ryan-Weber model. The two components in DOM were strong ligands for the three metals based on the conditional stability constants, with an order of Cu2+ > Al3+ > Fe3+. Results indicated that the DOM played an important role in the environmental behavior of metals.
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© 2013 Zhejiang University Press and Springer Science+Business Media Dordrecht
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Xu, J., Sheng, G. (2013). Spectral Approach to Binding Between Metals and Dissolved Organic Matter from a Biological Wastewater Treatment Plant. In: Xu, J., Wu, J., He, Y. (eds) Functions of Natural Organic Matter in Changing Environment. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5634-2_174
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DOI: https://doi.org/10.1007/978-94-007-5634-2_174
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