Influencing factors on the removal of pharmaceuticals from water with micro-grain activated carbon

WATER RESEARCH

卷:144

Article

Caique Alves, Thiago^1,2  Cabrera-Codony, Alba³  Barcelo, Damia^2,4  Rodriguez-Mozaz, Sara²  Pinheiro, Adilson¹  Gonzalez-Olmos, Rafael⁵ 

[1] Univ Reg Blumenau, Programa Posgrad Engn Ambiental, BR-89030000 Blumenau, SC, Brazil

[2] Univ Girona, Catalan Inst Water Res ICRA, H2O Bldg,Sci & Technol Pk,Emili Grahit 101, Girona 17003, Spain

[3] Univ Girona, Inst Environm, LEQUIA, Campus Montilivi, E-17071 Girona, Catalonia, Spain

[4] CSIC, IDAEA, Dept Environm Chem, Water & Soil Qual Res Grp, Jordi Girona 18-26, ES-08034 Barcelona, Spain

[5] Univ Ramon Llull, IQS Sch Engn, Via Augusta 390, Barcelona 08017, Spain

关键词: Adsorption;    Micropollutants;    Pharmaceuticals;    Wastewater;    Water reuse;   

DOI  :  10.1016/j.watres.2018.07.037

来源: Elsevier

【 摘 要 】

The removal efficiency of 6 micro-grain AC (mu GAC) was examined for 23 selected pharmaceutical compounds, usually found at trace level in municipal wastewater treatment plant (WWTP) effluents. Two different sets of experiments were carried out using distilled water and a real WWTP secondary effluent in order to understand the adsorption mechanisms of pharmaceuticals, including the role of the presence of background organic matter. Physical and chemical properties of mu GACs and target pollutants were checked for their potential to predict the pharmaceutical removal. Textural properties of mu GACs, and especially the mesopore volume, seemed to play the most important role during the adsorption without background organic matter whereas the chemistry of the mu GACs, such as the presence of surface oxygen groups and the point of zero charge, could have more influence in the experiments with WWTP effluent water. Positively charged molecules are better adsorbed due to the influence of the background organic matter and the presence of oxygenated groups in the surface of the mu GACs. The UV254 removal correlated well with the pharmaceutical removal and it is confirmed as an indicator to control the performance of pharmaceuticals adsorption with mu GACs in tertiary treatment. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

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