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| Simulation of multimedia transfer and fate of tetrabromobisphenol A in Lake Chaohu |
| CHENG Hao-miao1, CHEN Yu-ru1, ZHAO Yong-ling2, ZHU Teng-yi1, WANG Liang2, XIE Zheng-xin3, CHENG Ji-lin2 |
1. School of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China;
2. School of Hydraulic Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China;
3. School of Resource and Environment, Anhui Agricultural University, Hefei 230036, China |
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Abstract A multimedia fugacity model (Level Ⅲ) was applied to simulate the concentration distribution, quantity distribution, and transfer fluxes of tetrabromobisphenol A (TBBPA) in four environmental compartments in Lake Chaohu under different hydrodynamic conditions. The results showed that the simulated concentration (water, suspended particulate matter (SPM) and sediment) can fit the observed concentration well, which indicated the effectiveness of the model. Moreover, the key model parameters were identified using sensitivity analysis method. When water-sediment system reached equilibrium, TBBPA was mainly stored in sediment (accounts for over 86% of TBBPA input). Meanwhile, the resuspension characteristics and TBBPA degradation were influenced by hydrodynamic disturbance, which reduced the TBBPA concentration significantly in each environmental compartment and increased the quantity distribution in water and SPM and the transfer fluxes (water-SPM and sediment-SPM). The TBBPA degradation in sediment was the major route in water-sediment system (over 87% of the total TBBPA).
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Received: 11 June 2018
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