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Importance of Organic Matter to the Retention and Transport of Bisphenol A and Bisphenol S in Saturated Soils

Author:
Shi, Yanfeng, Sun, Yuanyuan, Gao, Bin, Xu, Hongxia, Wu, Jichun
Source:
Water, air, and soil pollution 2019 v.230 no.2 pp. 43
ISSN:
0049-6979
Subject:
bisphenol A, bisphenol S, groundwater, kinetics, mathematical models, public health, soil, soil organic matter, sorption, China
Abstract:
Bisphenol A (BPA) and bisphenol S (BPS) are frequently detected in soils and groundwater, which may pose threats to public health and the environment. However, the fate and transport of BPA/BPS in the subsurface media are still not clear. In this study, the retention and transport of BPA/BPS in three different natural soils were investigated with column experiments and mathematical modeling. The results showed that both BPA and BPS had high mobility in saturated soil A (Xinjiang soil), medium mobility in soil B (Changshu soil) media, and no mobility in the soil C (Jilin soil). There was a negative correlation between the mobility of BPA/BPS and soil organic matter (SOM) content because of the strong sorption of BPA/BPS on SOM. BPS showed higher mobility than BPA in the three soils. In addition, with the reduction of SOM of the soil B and C (after H₂O₂-treatment), the mobility of BPA/BPS enhanced dramatically. All these suggest that SOM played a significant role in controlling the retention and transport of BPA/BPS in the soil. Furthermore, the two-site kinetic model simulated the BPA/BPS transport experiment results very well.
Agid:
6296884