BỘ GIÁO DỤC VÀ ĐÀO TẠO TRƯỜNG ĐẠI HỌC SƯ PHẠM KỸ THUẬT THÀNH PHỐ HỒ CHÍ MINH ĐỒ ÁN TỐT NGHIỆP NGÀNH ENVIROMENTAL TECHNOLOGY STUDY ON THE REMOVAL OF COLOR FROM AQUEOUS SOLUTION USING TIO2 – CHITOSAN BEADS AND FILMS GVHD:Hoang Thi Tuyet Nhung SVTH:Dao Thanh Long MSSV: 15150018 Nguyen Hoang Thuy Tien MSSV:15150038 SKL 0 0 6 0 7 9 Tp. Hồ Chí Minh, tháng 7/2019 do an HCMC UNIVERSITY OF TECHNOLOGY AND EDUCATION FALCUTY FOR HIGH QUALITY TRAINING – ENVIROMENTAL TECHNOLOGY ----***---- GRADUATION THESIS STUDY ON THE REMOVAL OF COLOR FROM AQUEOUS SOLUTION USING TIO2 – CHITOSAN BEADS AND FILMS SUPERVISOR: Dr. Hoang Thi Tuyet Nhung STUDENTS: Dao Thanh Long 15150018 Nguyen Hoang Thuy Tien 15150038 COURSE: 2018 – 2019 HCMC, July 2019 do an SOCIALIST REPUBLUC OF VIETNAM Independence – Freedom – Happiness ----***---- MISSION OF GRADUATION THESIS Name: Dao Thanh Long Student ID: 15150018 Nguyen Hoang Thuy Tien 15150038 Major: Environmental Engineering and Technology Class: 15150CL2 Supervisor: Dr. Hoang Thi Tuyet Nhung Receive date: 03/2018 Submit date: 8/2018 1.
Topic: Study on the removal of color from aqueous solution using TiO2 – chitosan beads and films. Content implementation - Prepare bead and film forms from chitosan, glycerol and TiO2. - Observe the catalytic activity of samples with different kind of organic colors such as Methyl Orange, Near Wash Yellow, Acid Blue and Textile Color. - Examine the characteristics of the prepared material by the SEM, EDX, FTIR, XRD methods.
- Evaluate the effect of factors on the color reduction such as pH, hydraulic retention time, the concentration of TiO2, mass of material and initial color concentration. Ho Chi Minh, 29 / 7 / 2019 SUPERVISOR Hoang Thi Tuyet Nhung do an SOCIALIST REPUBLUC OF VIETNAM Independence – Freedom – Happiness ----***---- COMMENT OF SUPERVISOR Name: Dao Thanh Long Student ID: 15150018 Nguyen Hoang Thuy Tien 15150038 Major: Environmental Engineering and Technology Topic: Study on the removal of color from aqueous solution using TiO2 – chitosan beads and films. Hoang Thi Tuyet Nhung COMMENT 1. Content impletemation & amount of work:.
Defense: Yes/No. Evaluate of find:. Ho Chi Minh, / / 2019 SUPERVISOR Hoang Thi Tuyet Nhung do an SOCIALIST REPUBLUC OF VIETNAM Independence – Freedom – Happiness ----***---- COMMENT OF REVIEWER Name: Dao Thanh Long Student ID: 15150018 Nguyen Hoang Thuy Tien 15150038 Major: Environmental Engineering and Technology Topic: Study on the removal of color from aqueous solution using TiO2 – chitosan beads and films. Nguyen Van Suc COMMENT 1 Content impletemation & amount of work:.
do an 4 Defense: Yes/No. 5 Evaluate of find:. Ho Chi Minh, / / 2019 REVIEWER Assoc. Nguyen Van Suc do an ACKNOWLEDGEMENT We sincere and special gratitude goes to my supervisor Dr.
Hoang Thi Tuyet Nhung for her unreserved assistance towards the completion of this work. We express our thanks to Dr. Nguyen My Linh – Head of environment technology department, for her unrelenting support and help. We also say thank for the encouragement, guidance from the teachers and staff of FHQ, FCFT and from the seniors and our friends.
We would also like to thank to all environmental technologically teachers who have taught and helped us in four years of college. Last but not least, We express our gratitude to our parents for their support and encouragement throughout our study. Ho Chi Minh, 29 / 7 / 2019 Nguyen Hoang Thuy Tien Dao Thanh Long do an ABSTRACT The "Efficiencies of color removal using TiO2 – chitosan beads and films" project aims to create a low- cost and new eco-friendly material to remove colors in aqueous solution. In this study, methyl orange, near wash yellow, acid blue and textile color specifically used.
There are eight different kinds of materials were prepared: bare chitosan (C0) bead/film, Chitosan –TiO2 (CTi) bead/film, Chitosan – Gly (CG) bead/film, Chitosan – Gly – TiO2 (CGTi) bead/film. The materials were analyzed of chemical composition, structure, surface area of materials by modern physico-chemical analysis methods such as X-ray powder diffraction analysis (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy analysis (EDX) and Fourier transform infrared spectroscopy (FTIR) analysis. C0 bead, CG beads have the same low ability to remove colors and COD, only12 – 15% due to the adsorption capability of Chitosan. The decoloration efficiency of CTi beads are about 30 – 35%.
The highest decoloration efficiencie is of CGTi beads which are from70 to 75%. The optimal kind of material in bead form, HRT, mass and pH are CGTi10, 90 minutes, 2 g, pH = 5 with AB and NWYand pH = 6 with MO, respectively. The results show that CTi film has fewer treatment efficiencies than CGTi10 film and higher treatment efficiencies than C0 and CG. The treatment efficiencies of CGTi film is slightly higher compared with that of CGTi bead, due to the dispersion of TiO2 on the surface of the CGTi material which helps the photocatalytic catalytic process perform better.
The optimal kind of material in film form, HRT and pH are CGTi15, 30 minutes, pH = 3 and 5, respectively. Keywords: Glycerol, Chitosan, Tripolyphosphate, Crosslink, Decoloration, TiO2, … do an COMMITMENT Our name are Nguyen Hoang Thuy Tien and Dao Thanh Long, are students of K15 specialized Environmental Engineering Technology, student IDs: 15150038 and 15150018, respectively. We assure that this thesis is a scientific research of ourselves, completed under the guidance of Dr. Hoang Thi Tuyet Nhung.
The information references in this topic are collected from reliable, proven, widely publicized sources, and we cited it clearly in the Reference. The research results in this thesis were completed with our seriousness, honesty and guaranteed not overlapping with other topics. We would like to take the honor and prestige of ourselves to ensure this assurance Ho Chi Minh, 29 / 7 / 2019 Nguyen Hoang Thuy Tien Dao Thanh Long do an TABLE OF CONTENS LIST OF TABLES .i LIST OF FIGURES. ii LIST OF ACRONYMS.
The purpose and urgency of the study. Contents of the study. Scope, object and methods of the study .1 Scope of the study .2 Object of the study .3 Methods of the study. 5 Chapter 1: RESEARCH OVERVIEW.2 Research overview in Vietnam .7 Chapter 2: THEORETICAL OVERVIEW .1 OVERVIEW OF DYE .2 Classification of dyes .3 Type of dyes used for research .2 OVERVIEW OF CHITOSAN .2 History of formation and development .3 Chemical properties of Chitosan .4 Physical properties of Chitosan .5 Physical properties of Chitosan .6 Chitosan preparation process.7 Overview of researched Chitosan.3 OVERVIEW OF TiO2 .1 Formations and crystal structures of TiO2 .2 Properties of TiO2.3 Factors affecting photochemical catalytic process of TiO2 .4 Some limitations of TiO2.5 Some methods to increase photocatalytic activity of TiO2.6 Overview of research TiO2 (Degussa, P-25) .4 OVERVIEW OF GLYCEROL .1 Food industry applications .2 Medical, pharmaceutical and personal care applications .5 OVERVIEW OF SODIUM TRIPOLYPHOSPHATE (STPP) .6 OVERVIEW OF TAGUCHI METHOD (MINITAB SOFTWARE) .1 EQUIPMENT, TOOLS AND CHEMICALS .2 SYNTHESIS OF CGTI.2 Process of material preparation .3 Determination of materials physical properties .3 MATERIAL ANALYSIS METHODS .1 X-Ray Powder Diffraction analysis (XRD) .2 Fourier transform infrared spectroscopy analysis (FTIR) .3 Scanning electron microscope analysis (SEM) .4 Energy-dispersive X-ray spectroscopy analysis (EDX) .1 Creating standard curve .2 Decoloration efficiencies of bead materials .3 Decoloration efficiencies of CGTi films .4 Comparation of color removal between Chitosan - TiO2 beads and films.
47 Chapter 4: RESULTS AND DISCUSSION .1 CHARACTERISTICS OF MATERIALS .1 Physical properties of the material .2 Structure of material samples .3 FT-IR spectrum .4 Morphology of surface material .2 DECOLORATION EFFICIENCIES OF CGTi BEADS .1 Comparation of decoloration abilities among materials .2 Effect of the factors in the photocatalysis process .3 Experiment with UVA reactor .3 DECOLORATION EFFICIENCIES OF CGTi FILMS .1 Comparation of decoloration abilities among materials .2 Effect of the factors in the photocatalysis process .4 COMPARING TREATMENT ABILITIES BETWEEN CGTi BEAD AND FILM. viii do an LIST OF TABLES Table 2.1 Different types of dyes apply to different fabrics .2 Some structural properties of the shape of TiO2 .2 Results of optimal wavelength survey of Methyl orange, Near wash Yellow, Acid Blue and Textile Color .3 Variable optical density of solution MO standard curve .4 Variable optical density of solution NWY standard curve .5 Variable optical density of solution AB standard curve .6 Variable optical density of solution color degree standard curve .7 Summation of standard curve .8 Control factors and their levels used for the design of sunlight experiments with CGTi bead .9 Sunlight experiment with CGTi bead .10 Experimental model parameters .11 Control factors and their levels used for the design of sunlight experiments with CGTi film .12 Sunlight experiment with CGTi film .1 The content of elements of the sample C0 .2 The content of elements of the sample CGTi10 bead .3 Optimal values of CGTi bead and CGTi film. 67 Page i do an LIST OF FIGURES Fig 2.1 Chemical Structure Depiction of methyl orange .2 Chemical Structure Depiction of NWY .3 Chemical Structure Depiction of acid blue .4 Process of preparing chitosan .5 Crystal structures of TiO2.6 Crystal structures of TiO2.7 Schematic diagram of TiO2 photocatalyst mechanism .8 Band-gap energy of some photochemical catalysts .9 Chitosan-TPP Gel Bead Formation in the Absence of Porogen .10 Chitosan-TPP Gel Bead Formation in the Presence of Porogen .11 Chitosan-TPP Gel Bead after Removal of the Porogen .1 Gel solution preparation .2 Create CGTi bead .3 Create CGTi film .4 MO standard curve .5 NWY standard curve .6 AB standard curve .7 Color standard curve .8 Experiments model for CGTi bead under sunlight .9 Experiments model for CGTi bead with UVA light reactor .10 Experiments model for CGTi film under sunlight .1 Bead before dry .2 Bead after dry .4 XRD measurement results of CGTi when changed the concentration of TiO2. 49 Page ii do an Fig 4.5 XRD of CGTi10 bead before and after treatment .6 FTIR of CGTi and Chitosan bead samples .7 Morphology of surface material.8 Spectrum EDX sample Chitosan bead .9 Spectrum EDX sample CGTi10 bead .10 Decoloration efficiencies of C0, CG, CTi, CGTi10 beads for AB .11 COD removal efficiencies of C0, CG, CTi, CGTi10 beads for AB .12 Decoloration efficiencies of C0, CG, CTi, CGTi10 beads for TC .13 COD removal efficiencies of C0, CG, CTi, CGTi10 beads for TC .14 Factors affect the photochemical catalytic process of CGTi bead .15 Decoloration efficiencies of CGTi beads under UVA light for AB .16 Decoloration efficiencies of CGTi beads under UVA light for NWY .17 The result of AB (a) and NWY (b) under UVA light in flow experiment .18 Treatment efficiencies of Textile Color (a) and COD removal (b) .19 Color and COD removal efficiencies under sunlight and in dark for MO .20 Color and COD removal efficiencies under sunlight and in dark for NWY .21 Color and COD removal efficiencies under sunlight and in dark for AB .22 Decoloration efficiencies of C0, CG, CTi, CGTi15 films for AB .23 COD removal efficiencies of C0, CG, CTi, CGTi15 films for AB .24 Decoloration efficiencies of C0, CG, CTi, CGTi15 films for TC .25 COD removal efficiencies of C0, CG, CTi, CGTi15 films for TC .26 Factors affect photochemical catalytic processes of CGTi film .27 Decoloration efficiencies of CGTi bead and CGTi film (a) COD removal (b).
67 Page iii do an LIST OF ACRONYMS AB Axit Blue CB Conduction Band DA Degree of acetylication EDX Energy Dispersive X-Ray Analysis FDA Food and Drug Administration FT-IR Fourier Transform Infrared Spectroscopy MO Methyl Orange MW Moledule weight NWY Near Wash Yellow P25 TiO2 (particle size 25 nm), Degussa STPP Sodium Tripolyphosphate SEM Scanning electron microscopy TC Textile Color UV Ultraviolet light (10nm – 380 nm) VB Valence Band XRD X-ray diffraction Page iv do an INTRODUCTION Page 1 do an 1.