标题：Improved adsorption of streptomycin onto Thalia dealbata activated carbon modified by sodium thiosulfate
作者：Huang, Lihui; Li, Gang; Wang, Bing; Huang, Ji; Zhang, Bo
作者机构：[Huang, Lihui; Li, Gang; Wang, Bing; Huang, Ji; Zhang, Bo] Shandong Univ, Shandong Prov Key Lab Water Pollut Control & Reso, Sch Environm Sci & Engn, 更多
通讯作者地址：[Huang, LH]Shandong Univ, Shandong Prov Key Lab Water Pollut Control & Reso, Sch Environm Sci & Engn, Jinan 250100, Peoples R China.
来源：DESALINATION AND WATER TREATMENT
关键词：Thalia dealbata; Activated carbon; Sodium thiosulfate modified;; Streptomycin
摘要：Sodium thiosulfate-modified activated carbon (TDAC-ST) was prepared from Thalia dealbata, and its ability to remove streptomycin (STM) from aqueous solutions was examined. The surface properties of TDAC-ST and the original carbon (TDAC) were also measured by scanning electron microscopy, N-2 adsorption/desorption isotherms, Fourier transform infrared spectroscopy, and energy dispersive spectroscopy. The results indicated that modification with sodium thiosulfate slightly decreased the carbon's surface area but introduced more functional groups and improved the adsorption ability greatly as compared to the original carbon. The effects of solution pH, initial STM concentration and contact time on adsorption system were also studied. The kinetics data followed the pseudo-second-order kinetics model, and the adsorption isotherms fit the Langmuir isotherm equation quite well, and the maximum adsorption capacity of was 247.65 and 170.84 mg/g for TDAC-ST and TDAC, respectively. The results indicated that sodium thiosulfate modification could greatly enhance the adsorption of STM onto activated carbon, and TDAC-ST was a promising adsorbent for the removal of streptomycin from aqueous solutions.