DOI: 10.1016/j.watres.2018.09.051
Scopus记录号: 2-s2.0-85054338900
论文题名: Removal of sulfonamide antibiotics and human metabolite by biochar and biochar/H2O2 in synthetic urine
作者: Sun P. ; Li Y. ; Meng T. ; Zhang R. ; Song M. ; Ren J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 147 起始页码: 91
结束页码: 100
语种: 英语
英文关键词: Adsorption
; Biochar
; Carbonate radical
; H2O2 activation
; Source-separated urine
; Sulfonamide antibiotics
英文摘要: Source-separated urine has been increasingly regarded as a promising alternative waste-stream for effectively removing pharmaceuticals and human metabolites. This study investigated the removal of sulfonamide antibiotics, one category among the most frequently detected antibiotics in the environment, by biochar and biochar/H2O2 in synthetic urine matrix. The adsorption and degradation of four parent sulfonamide antibiotics, including sulfamethoxazole, sulfadiazine, sulfamethazine, sulfadimethoxine, and one human metabolite, N4-acetyl-sulfamethoxazole (together referred as SAs) were investigated. Biochar derived from cotton straw was applied as adsorbent for SAs and catalyst for H2O2. Results showed that the adsorption of SAs was inhibited in urine compared with that in phosphate buffer solution. Bicarbonate in urine placed major influence. Langmuir isotherm model well described the adsorption process in both buffer and urine matrices. Adsorption and desorption rates were estimated by a kinetic model, which well fitted the removal of SAs from aqueous phase at various biochar doses. The adsorption of SAs on biochar was due to multiple forces, in which van der Waals forces and hydrophobicity played major roles in distinguishing the sorption behavior of different SAs. To destruct the SAs, H2O2 was added with biochar. Except for N4-acetyl-sulfamethoxazole, all the parent SAs can be degraded in urine matrix. Carbonate radical, produced from the activation of peroxymonocarbonate by biochar, was proposed to be the major contributing reactive species in biochar/H2O2 system in urine matrix. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112371
Appears in Collections: 气候减缓与适应
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作者单位: School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China; Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China; School of Environmental Sciences, Liaoning University, Chongshan Road No.66, Shenyang, 110036, China
Recommended Citation:
Sun P.,Li Y.,Meng T.,et al. Removal of sulfonamide antibiotics and human metabolite by biochar and biochar/H2O2 in synthetic urine[J]. Water Research,2018-01-01,147