title: Pyrolytic Temperature Dependent and Ash Catalyzed Formation of Sludge Char with Ultra-High Adsorption to 1-Naphthol.
abstract: Massively produced sewage sludge brings a serious problem to environment. Pyrolysis is a promising and bifunctional technology to dispose the sewage sludge and recover energy, in which a large amount of pyrolytic sludge char is also produced. In this study, we proposed a value-added utilization of sludge char. We prepared an adsorbent with ultrahigh capacity for hydrophobic organic pollutant (1-naphthol) by pyrolysis of sludge and removal of the ash moiety from the sludge char. The adsorptive behavior of the adsorbent is strongly dependent on the pyrolytic temperature of sludge, and the maximum adsorption capacity of 666 mg g(-1) was achieved at 800 °C, which is comparable to deliberately modified graphene. Further exploration indicated that the robust adsorption to 1-naphthol is attributed to the catalytic effect of ash in sludge which facilitated the formation of more orderly graphitic structures and aromaticity at high pyrolytic temperatures.
authors: CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China , Hefei 230026, China.
authors: Xiao-Qing
authors: XQ
authors: Liu
authors: CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China , Hefei 230026, China.
authors: Hong-Sheng
authors: HS
authors: Ding
authors: CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China , Hefei 230026, China.
authors: Yuan-Ying
authors: YY
authors: Wang
authors: CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China , Hefei 230026, China.
authors: Wu-Jun
authors: WJ
authors: Liu
authors: CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China , Hefei 230026, China.
authors: Hong
authors: H
authors: Jiang
mesh_terms: D000327:Adsorption; D002384:Catalysis; D004777:Environment; D006358:Hot Temperature; D007700:Kinetics; D009284:Naphthols / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D012722:Sewage / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman
chemical_list: D009284:Naphthols; D012722:Sewage; C029350:1-naphthol