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作者:

Liu, Ying (Liu, Ying.) | Gao, Jingfeng (Gao, Jingfeng.) (学者:高景峰) | Wang, Qian (Wang, Qian.) | Chen, Hao (Chen, Hao.) | Zhang, Yi (Zhang, Yi.) | Fu, Xiaoyu (Fu, Xiaoyu.)

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摘要:

Whether it's necessary to extra chemical synthesis steps to modify nZVI in peroxymonosulfate (PMS) activation process are worth to further investigation. The 56 mg/L nZVI/153.65 mg/L PMS and 56 mg/L sulfidated nZVI (S-nZVI) (S/Fe molar ratio = 1:5)/153.65 mg/L PMS) processes could effectively attain 97.7% (with kobs of 3.7817 min(-1)) and 97.0% (with k(obs) of 3.4966 min(-1)) of the degradation of 20 mg/L sulfadiazine (SDZ) in 1 min, respectively. The nZVI/PMS system could quickly achieve 85.5% degradation of 20 mg/L SDZ in 1 min and effectively inactivate 99.99% of coexisting Pseudomonas. HLS-6 (5.81-log) in 30 min. Electron paramagnetic resonance tests and radical quenching experiments determined SO4 center dot-, HO center dot, O-1(2) and O-2(center dot-) were responsible for SDZ degradation. The nZVI/PMS system could still achieve the satisfactory degradation efficiency of SDZ under the influence of humic acid (exceeded 96.1%), common anions (exceeded 67.3%), synthetic wastewater effluent (exceeded 90.7%) and real wastewater effluent (exceeded 78.7%). The high degradation efficiency of tetracycline (exceeded 98.9%) and five common disinfectants (exceeded 96.3%) confirmed the applicability of the two systems for pollutants removal. It's no necessary to extra chemical synthesis steps to modify nZVI for PMS activation to remove both chemical and biological pollutants.

关键词:

Sulfadiazine degradation Sulfidated modification Sulfadiazine resistance bacteria removal Nanoscale zerovalent iron Peroxymonosulfate

作者机构:

  • [ 1 ] [Liu, Ying]Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 2 ] [Gao, Jingfeng]Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Qian]Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 4 ] [Chen, Hao]Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 5 ] [Zhang, Yi]Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 6 ] [Fu, Xiaoyu]Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China

通讯作者信息:

  • 高景峰

    [Gao, Jingfeng]Beijing Univ Technol, Dept Environm Engn, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China

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来源 :

JOURNAL OF HAZARDOUS MATERIALS

ISSN: 0304-3894

年份: 2024

卷: 469

1 3 . 6 0 0

JCR@2022

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