title: Biosorption of effluent organic matter onto magnetic biochar composite: Behavior of fluorescent components and their binding properties.
abstract: Effluent organic matter (EfOM) is of great concern as one of main sources of organic pollutants from biologically treated wastewater, which is harmful to the quality of receiving waters. In present study, magnetic biochar composite (MBC) was successfully prepared, characterizated and applied to EfOM treatment. The interaction between EfOM and MBC was explored by a combination of excitation-emission matrix (EEM), parallel factor analysis (PARAFAC), synchronous fluorescence, two-dimensional correlation spectroscopy (2D-COS), and molecular weight distribution. Result implied that two fluorescence components were derived from EEM-PARAFAC, and their relative fluorescence intensity scores expressed decreased trend. Moreover, fluorescence quenching of EfOM with increased MBC took place sequentially in the following order: protein-like fraction<fulvic-like and humic-like fractions. Molecular weight distribution suggested that MBC had different uptake ability to various size ranges of EfOM. The obtained results could provide a potential application of fluorescence spectroscopy for EfOM treatment assessment.
authors.affiliation: School of Resources and Environment, University of Jinan, Jinan 250022, PR China.
authors.forename: Dong
authors.initials: D
authors.lastname: Wei
authors.affiliation: School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
authors.forename: Huu Hao
authors.initials: HH
authors.lastname: Ngo
authors.affiliation: School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
authors.forename: Wenshan
authors.initials: W
authors.lastname: Guo
authors.affiliation: School of Resources and Environment, University of Jinan, Jinan 250022, PR China.
authors.forename: Weiying
authors.initials: W
authors.lastname: Xu
authors.affiliation: School of Resources and Environment, University of Jinan, Jinan 250022, PR China.
authors.forename: Yongfang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Resources and Environment, University of Jinan, Jinan 250022, PR China. Electronic address: dubin61@gmail.com.
authors.forename: Bin
authors.initials: B
authors.lastname: Du
authors.affiliation: Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Wei
mesh_terms: D002606:Charcoal / Q000737:chemistry*; D005163:Factor Analysis, Statistical; D005453:Fluorescence; D008280:Magnetics; D008970:Molecular Weight; D013050:Spectrometry, Fluorescence / Q000379:methods; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D002606:Charcoal; D062065:Wastewater; C540010:biochar
keywords: Effluent organic matter (EfOM); Excitation–emission matrix (EEM); Parallel factor analysis (PARAFAC); Synchronous fluorescence spectroscopy; Two-dimensional correlation spectroscopy (2D-COS)