Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 6, Issue 4, Pages 4196-4205Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2018.06.029
Keywords
Activated biochar; Surfactant; Fluorescence spectra; Adsorption
Categories
Funding
- National Natural Science Foundation of China [21677138]
- Fundamental Research Funds for the Central Universities [WK2060190063]
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Removal of polycyclic aromatic hydrocarbons (PAHs) in treated wastewater by adsorbents is a simple and efficient method. However, most of investigations were focused on the adsorption of single pollutant, and little is known about the interference of coexisted pollutants, especially the ubiquitous surfactants. In this study, the interference mechanism of surfactants on biochar adsorption performace to 1-naphthol was investigated by fluorescence spectrum coupling X-ray photoelectron spectroscopy analysis. Although the adsorption performance of activated biochar cannot be hindered by low concentration of surfactant (10 mg/L) both in synthetic and real wastewater, high concentrations of surfactant significantly inhibit the adsorption performance of activated biochar. Fluorescence spectra suggested that a new complex may form by the interaction of SDBS and 1-naphthol, although it could not be structurally identified, which does impede the adsorption of 1-naphthol. Competition of surfactants for the active sites on the adsorbent and replacement of the adsorbed 1-naphthol are other effective factors.
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