Health & Environmental Research Online (HERO)


Print Feedback Export to File
6717902 
Journal Article 
Influence of Heavy Metals and Surfactants on the Adsorption of Tetracyclines to Sediment 
Li, J; Zhou, B; Xue, Bai; Mo, Q; Cai, W 
2011 
1 
Research Journal of Chemistry and Environment
ISSN: 0972-0626 
15 
3 
71-76 
WOS:000295857000014 
The widely utilization of pharmaceutical and personal care products (PPCPs) in the pharmaceutical therapies and agricultural husbandry has led to the world pollution. Thus, it is of great interest to study the mobility and fate of PPCPs in the environment. The aim of this study was to investigate the influence of heavy metal Pb(II), anionic surfactant sodium dodecylbenzenesulfonate (SDBS), nonionic surfactant Triton X-100 (TX-100) on the adsorption of representative PPCPs (tetracycline (TC) and oxytetracycline (OTC) on two types of adsorbents. Results showed that the adsorption isotherms of TC and OTC on two sediments were in good comparison with Freundlich equation. However compared to the sediment B without organic matter (OM), the sediment A with higher OM exhibited the higher adsorption affinity to TC and OTC. The presence of Pb (II) caused a significant increase on the TC and OTC adsorption to sediment A due to the formation of ternary complex between OM ligand groups and tetracycline ligand groups. However the influence of Pb (II) on TC and OTC adsorption on sediment B was minimal. The presence of SDBS increased TC and OTC adsorption on two sediments, which could be due to the significantly increasing OM content of two sediments via the SDBS adsorption. In contrast, the nonionic surfactant TX-100 caused a slight reduction on TC and OTC adsorption on two sediments even at high concentration. 
Tetracycline; heavy metals; surfactants; adsorption