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| 1 | Impact of crystalline and amorphous iron-and aluminum hydroxides on mechanisms of phosphate adsorption and desorption显示文摘Fourier-transform infrared(FT-IR) spectroscopic experiments were carried out during phosphate adsorption on highly crystalline gibbsite, poorly crystalline 2-line-ferrihydrite and amorphous iron–aluminum–hydroxide mixtures in the molar ratio 1:0, 10:1, 5:1, 1:1, 1:5, 1:10 and 0:1. The OH stretching vibrational bands were utilized to analyze changes in structural and surface OH groups during adsorption, because the position of characteristic P\O vibrational bands can shift depending on reaction conditions, pH or adsorbed phosphate content.Adsorption and desorption kinetics were studied at pH6 and different initial phosphate concentrations to achieve varying phosphate coverage on the mineral surfaces. For gibbsite the formation of AlHPO_4 and Al_2HPO_4 can be assumed, while for ferrihydrite, a FeHPO_4 or Fe_2PO_4 complex and the precipitation of FePO_4 with longer equilibration time were proposed.Fe_2HPO_4 or a Fe_2PO_4 surface complex was deduced for Fe-hydroxides, an AlH_2PO_4 surface complex was identified for Al-hydroxide, and both displayed either hydrogen bonds to neighboring hydroxyl groups or hydrogen bonds to outer-sphere complexes. Fe:Al-hydroxide mixtures with high Al ratios showed a low phosphate desorption rate, while ferrihydrite and the Fe:Al-hydroxide mixtures with high Fe ratios had almost negligible desorption rates. It was concluded that within the weakly associated amorphous FeO(OH) materials, FePO_4 precipitated, which was bound by outer-sphere hydrogen bonds. With high Al ratios, desorption increased, which indicated weaker phosphate binding of both inner-sphere and outer-sphere complexes and hence, either no or minor quantities of precipitate. Ferrihydrite showed a more rigid structure and a lower extent of precipitation compared to amorphous Fe-hydroxide. | Stella Gypser Florian Hirsch Anja M.Schleicher Dirk Freese | 2018 | Journal of Environmental Sciences2018，30，8： | 14 |
| 2 | Diagnosis and treatment of autoimmune hepatitis显示文摘 | Albert J. Czaja Deborah K. Freese | 2002 | Hepatology2002，，2： | 3 |
| 3 | Diagnosis of Epstein-Barr virus infection in hairy leukoplekia by using nucleic acid hybridization and noninvasive techniques 显示文摘 | De Souza YG Freese UK Greenspan D | 1990 | J Clin Microbiol1990，28，12： | 1 |
| 4 | A viscohyperelastic finite element model for rubber显示文摘 | Johnson A R Quigley C J Freese C E | 1995 | Comput Methods Appl Mech Engrg1995，127，： | 1 |
| 5 | Kinetic evidence for an enamine mechanism in the acid-catalyzed cleavage of β-amino alcohols显示文摘 | Freese R F Greene M G | 1973 | J Org C he m1973，38，11： | 1 |
| 6 | Diagnosis and treatment of autoimmune hepatitis显示文摘 | CzajaAJ Freese DK | 2002 | Hapatology2002，36，： | 1 |
| 7 | Guideline for the evaluation of cholestatic jaundice in infants:recommendations of the North American Society for Pediatric Gastroenterology,Hepatology and Nutrition显示文摘 | Moyer V Freese DK Whitington PF | 2004 | J Pediatr Gastroenterol Nutr2004，39，2： | 1 |
| 8 | Long-term kinetics of phosphate release from soil 显示文摘 | Lookman R Freese D Merckx R | 1995 | Environmental Science & Technology1995，29，6： | 1 |
| 9 | Size-and coa- ting-dependent uptake of polymer-coated Gold nanoparticles in primary human dermal microvascular endothelial cells显示文摘 | FREESE C GIBSON M I KLOK H A | 2012 | Bio- macromolecules2012，13，5： | 1 |
| 10 | Liver rejection: an analysis of the use of biopsy in determining outcome of rejection 显示文摘 | Freese DK Sharp HL | 1987 | Am J Surg Pathol1987，11，1： | 1 |
| 11 | Diagnosis and treatment of autoimmune hepatitis 显示文摘 | Czaja AJ Freese DK American Aaaoeiation for the study of Liver Disease | 2002 | Hepatotogy2002，36，： | 1 |
| 12 | A multilevel treatment of moir6 fringe data using finite elements 显示文摘 | Freese C E Gee L | 1999 | Experimental Mechanics1999，39，4： | 1 |
| 13 | When do older aduhs turn to the Intemet for health information? Findings from the Wisconsin Longi- tudinal Study 显示文摘 | Flynn K E Smith M A Freese J | 2006 | Journal of General Internal Medicine2006，21，12： | 1 |
| 14 | Implications of Differences in Psychological Contractsfor Human Resources Management 显示文摘 | Freese C Schalk R | 1996 | European Journal of Work and Org-anizational Psychology1996，，5： | 1 |
| 15 | Acylation of aromatic compounds on H-Beta zeolites显示文摘 | FREESE U HEINRICH F ROESSNER F | 1999 | Catal Today1999，49，13： | 1 |
| 16 | Acylation of aromatic compound on H-Beta zeolites显示文摘 | Heinrich F Roessner F | 1999 | Catal Today1999，49，： | 1 |
| 17 | Analysis of harvest morbidity and radiographic outcome-sing autografi for anterior cervical fusion显示文摘 | Schnee CL Freese A Weil RJ | 1997 | Spine1997，22，19： | 1 |
| 18 | Function of lipophilic acids as antimicrobial food additives 显示文摘 | FREESE E SHEW CW GALLIERS E | 1973 | Na- ture1973，，241： | 1 |
| 19 | Reframing one' s teaching: Discovering our teacher selves through reflection and inquiry显示文摘 | Freese A | 2006 | Teach- ing and Teacher Education2006，，22： | 1 |
| 20 | Diagnosis and treatment of autoim- mune hepatitis显示文摘 | Czaja AJ Freese DK | 2002 | Hepatology2002，36，2： | 1 |
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