Abstract:FA discharged from the wastewater treatment plant were extracted from purifi ed effl uents for the quantitative and qualitative analysis. The treated sewage from municipal treatment plants was acidifi ed to pH <2 and extracted with ion exchange resins in a laboratory column. After desorption with NH 4 OH, the fulvic acids were condensed under vacuum and tested for mass performance, UV-VIS light spectra, IR absorption spectra, elementary composition and other elements. Their structure was analysed and compared … Show more
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