title: Sorption of bisphenol A, 17α-ethinyl estradiol and phenanthrene on thermally and hydrothermally produced biochars.
abstract: Thermal and hydrothermal biochars were characterized, and adsorption of bisphenol A (BPA), 17α-ethinyl estradiol (EE2) and phenanthrene (Phen) was determined to investigate the sorption characteristic difference between the two types of biochars. Thermal biochars were composed mostly of aromatic moieties, with low H/C and O/C ratios as compared to hydrothermal ones having diverse functional groups. Single-point organic carbon-normalized distribution coefficients (logK(OC)) of EE2 and BPA of hydrothermal biochars were higher than thermal biochars, while Phen logK(OC) values were comparable among them. X-ray diffraction and solid state nuclear magnetic resonance results suggested that hydrothermal biochars consisted of more amorphous aliphatic-C, possibly being responsible for their high sorption capacity of Phen. This study demonstrated that hydrothermal biochars could adsorb a wider spectrum of both polar and nonpolar organic contaminants than thermally produced biochars, suggesting that hydrothermal biochar derived from poultry and animal waste is a potential sorbent for agricultural and environmental applications.
authors.affiliation: State Key Laboratory of Water Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Sun
authors.forename: Kyoung
authors.initials: K
authors.lastname: Ro
authors.forename: Mingxin
authors.initials: M
authors.lastname: Guo
authors.forename: Jeff
authors.initials: J
authors.lastname: Novak
authors.forename: Hamid
authors.initials: H
authors.lastname: Mashayekhi
authors.forename: Baoshan
authors.initials: B
authors.lastname: Xing
mesh_terms: D000327:Adsorption; D001559:Benzhydryl Compounds; D004997:Ethinyl Estradiol / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010616:Phenanthrenes / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D013816:Thermodynamics; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D004997:Ethinyl Estradiol; D010616:Phenanthrenes; D010636:Phenols; C031181:phenanthrene; C006780:bisphenol A; D000098826:Bisphenol A Compounds