博士面试答辩PPT英文版(科研陈述).ppt

申请者 : - 申请导师: - 2015年3月25日,-大学博士申请科研陈述,Outline,1. Personal Information 2. Research Progress During Graduate Period 3. Research Topics and Interests,1.Personal Information,Education： 09/2012-06/2015. Food Science, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University. 09/2008-06/2012. B. Eng., Food Science and Engineering, Anhui Agricultural University. 09/2008-06/2012. Chu Zhou High School. Awards： National Encouragement Scholarship, Professional Third-class Scholarship, Triple A Outstanding Student , Outstanding Student Leaders, School Outstanding Graduation Thesis, etc.,Personal Information,Language Proficiency: Ability to search and read English literature skillfully from all kinds of English database. Ability to write English papers independently. Computer Skills: Microsoft office, Endnote, Origin, Omnic, Photoshop, Spass, Chemical Office, XPert Highscore Plus, etc.,2. Research Progress During Graduate Period,Water-drinking fluorosis covered about 2.2 million km2, 1.4 millions of people,Limitations of traditional adsorbent ： （1）Narrow pH range （2）Low adsorption capacity（3）Secondary pollution,Fig. 2-1 Distribution of fluorosis in China,2.1 Background：Distribution of fluorosis in China,2. Research Progress During Graduate Period,2.2 Removal of fluoride from drinking water using tea waste loaded with Al/Fe oxides,Fig. 2-2 Graphical abstract of tea waste loaded with Al/Fe oxides,2. Research Progress During Graduate Period,Fig. 2-3 Effect of pH on the qe of biosorbents,Table 2-1 The adsorption capacity of fluoride,q0 of activated alumina was 1.45 mg/g at pH 7 (Jagtap, 2012).,2.2 Removal of fluoride from drinking water using tea waste loaded with Al/Fe oxides,pH of drinking water: 6.0-8.0,Research Progress,2.2 Removal of fluoride from drinking water using tea waste loaded with Al/Fe oxides,Fig. 2-4 Residual concentration of Fe (a) and Al (b) in fluoride solution with pH after adsorption,pH of drinking water: 6.0-8.0,2. Research Progress During Graduate Period,2. Research Progress During Graduate Period,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),Fig. 2-4. Molecular structure of APAM,Carboxylic acid functional groups of organic acids have demonstrated a positive effect on enhancement of fluoride adsorption from aqueous (Velazquez-Jimenez, 2014; Li, 2013; Wang, 2011).,2. Research Progress During Graduate Period,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),Fig. 2-5 SEM images of Tea-Al (a) and Tea-APAM-Al (b),Table 2-2 Surface area, pore volume and pore diameter of biosorbents.,15 times,16 times,2. Research Progress During Graduate Period,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),Fig. 2-6. Effect of pH on the adsorption capacity of biosorbents,pH of drinking water: 6.0-8.0,Table 2-3 The adsorption capacity of fluoride,q0 of activated alumina was 1.45 mg/g at pH 7 (Jagtap, 2012),29 times,2. Research Progress During Graduate Period,Fig. 2-4. Molecular structure of APAM,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),Fig. 2-7 Concentration of fluoride and sulfate ions in solution as a function of contact time with initial fluoride concentration of 30 mg/L,The results indicated that anion exchange with sulfate ions was one of the important mechanisms for fluoride removal,2. Research Progress During Graduate Period,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),The band at 1109 cm-1 disappeared after adsorption of fluoride implying that SO42 had played an important role in fluoride removal.,Fig. 2-8. FTIR spectra of biosorbents,2. Research Progress During Graduate Period,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),Tea-APAM-Al showed a remarkable increase from 4.02% to 15.99% in comparison to Tea-Al. The quantity of sulfate ion could be increased with the participation of APAM among the loading progress. Sulfate ions might be replaced by fluoride, which was consistent with the results of FTIR and adsorption experiments.,Table 2-4 XPS analysis of Tea-Al, Tea-APAM-Al before and after fluoride adsorption,NaF：684.5 eV,The results suggested that Al atoms participated in fluoride adsorption process. A new F (1s) peak was found at 685.5 eV, which was higher than the 684.5 eV for NaF, signifying that surface reactions had occurred.,2. Research Progress During Graduate Period,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),Fig. 2-9 XPS spectra of the Al 2p (a) and F 1s (b) of Tea-APAM-Al before and after adsorption,2. Research Progress During Graduate Period,2.3 Tea waste supported Al oxides nanoparticles with help of Anionic polyacrylamide (Tea-APAM-Al),Table 2-5 Chemical parameters of ground water before and after treatment with Tea-APAM-Al,2. Research Progress During Graduate Period,Summarize:,Two kinds of Tea-Al-Fe exhibited superior fluoride adsorption than traditional adsorbents. Tea-Al-Fe could be used to remove fluoride without pH adjustment. The residual concentrations of Al and Fe in drinking water adsorbed by Tea-Al-Fe at different pH ranges from 5.0 to 10.0 were below the WHO standard.,2. Research Progress During Graduate Period,Publications 1 2 3 4 5,3.Research Topics and Interests,3.1 The potential abilities of polysaccharide and its derivatives to remove fluo