Effects of copper and aluminum on the adsorption of sulfathiazole and tylosin on peat and soil
文献类型: 外文期刊
第一作者: Pei, Zhiguo
作者: Pei, Zhiguo;Yang, Shuang;Li, Chunmei;Zhang, Shuzhen;Shan, Xiao-quan;Wen, Bei;Guo, Baoyuan;Li, Lingyun
作者机构:
关键词: Adsorption;Copper;Aluminum;Sulfathiazole;Tylosin
期刊名称:ENVIRONMENTAL POLLUTION ( 影响因子:8.071; 五年影响因子:8.35 )
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收录情况: SCI
摘要: Effects of copper (Cu) and aluminum (Al) on the adsorption of sulfathiazole (STZ) and tylosin (T) to peat and soil were investigated using a batch equilibration method. Results show that Cu suppressed STZ adsorption onto peat and soil at pH < 5.0 because of the electrostatic competition, while increased STZ adsorption at pH > 5.0 due to the formation of STZ-Cu complexes and/or Cu bridge. In contrast, Al only decreased STZ adsorption at pH < 6.0, and exerted slight effect on STZ adsorption at >6.0. As for T, both Cu and Al suppressed its adsorption over the entire pH range owing to three reasons: 1) electrostatic competition between Cu/Al and T~+; 2) Cu/Al adsorption made the soil and peat surface less negatively charged, which was unfavorable for T~+ adsorption; 3) the shrunken pore size of peat and soil retarded the diffusion of large-sized T into these pores.
分类号: X5
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