Dissertation > Excellent graduate degree dissertation topics show

Organic / inorganic composite weakly basic anion exchange resin synthesis and application of research

Author: LiFengGang
Tutor: LiChangHai
School: Changchun University of
Course: Polymer Chemistry and Physics
Keywords: A weakly basic anion exchange resin Hydrated iron oxide Copper oxide hydrate β-naphthalenesulfonic acid Breakthrough curve
CLC: X703.1
Type: Master's thesis
Year: 2010
Downloads: 66
Quote: 0
Read: Download Dissertation

Abstract


β-naphthalenesulfonic acid is important dye intermediates. Accompanied by the production of p-naphthalene sulfonic acid, resulting in a large number of sulfonic acid group-containing aromatic compounds wastewater. Ion Exchange and Adsorption as an effective method of chemical separation, with excellent separation selectivity and high concentration multiple, easy to operate, the effect is prominent. Composite reaction of hydrated iron oxide, and hydrated iron oxide load macroporous weakly basic anion exchange resin HFO-D301R were characterized by chemical precipitation method of macroporous weakly basic anion resin D301R. Hydrated iron oxide composite macroporous weakly basic anion exchange resin treatment of β-naphthalene sulfonic acid mixed wastewater, and carried out a systematic study of the process. Various factors affect the hydrated iron oxide composite resin HFO-D301R exchange of β-naphthalenesulfonic acid wastewater the adsorption thermodynamics Experimental study were investigated the influence of time, temperature, pH value, salt content, etc. of the process. Experimental results show that the composite ion exchange resin adsorption equilibrium time of β-naphthalene sulfonic acid wastewater 5h; exchange adsorption process is an exothermic process, the lower the temperature the higher the resin adsorption exchange capacity, low temperature conducive to the conduct of the exchange reaction of resin adsorption ; pH = 4 is conducive to the exchange adsorption conduct; major impact of the salt content of the process is a competitive exchange interaction of a large number of Cl-from the wastewater of SO42-and SO32-ions. With the increase of pH in the solution, the concentration of the solution of β-naphthalene sulfonic acid, indicating that the pH value is too high is not conducive to exchange adsorption reaction. In addition to these static factors, dynamic factors of exchange adsorption. The flow rate is low, the handling is better, as the flow rate increases, the penetration ahead of time, and the shape of the breakthrough curve to flatten completely penetrate prolonged. Containing doubling the concentration, the breakthrough time much earlier. 2BV / h and velocity made a breakthrough curves of the β-naphthalene sulfonic acid mixed acid wastewater. Β-naphthalenesulfonic acid as the representative was to study the adsorption in HFO-D301R resin exchange process. Application of the Langmuir model, the Freundlich model Weinberg equilibrium adsorption data were fitted using nonlinear least squares method, and found that the Freundlich model can more accurately reflect the exchange adsorption process. Van't Hoff equation, the Gibbs equation and the Gibbs-Helmholtz equation to describe the exchange of the adsorption process of obtained different temperature HFO-D301R the adsorption exchange of β-naphthalene sulfonic standard free energy change, and the the exchange adsorption enthalpy under different exchange adsorption amount change proved theoretically that the exchange adsorption process is an exothermic process. static exchange adsorption of β-naphthalenesulfonic acid in HFO-D301R resin shows a good dynamic characteristics. To fit the experimental data of dynamic exchange adsorption order kinetics process. Further study of the relationship of the exchange rate (F) was measured with time (t), found that the experimental data plotted by \sexual relations, a linear correlation coefficient of 0.94769, indicating that the process is controlled by particle diffusion.

Related Dissertations

  1. Electrochemical Polymerization of β-Naphthalene Sulfonic Acid in Mixed Electrolytes Containing Boron Trifluoride Diethyl Etherate,O631.5
  2. Preparation and Activity of Metal Supported Heterogenous Catalyst in Catalytic Ozonation of TNT,X703
  3. Sythesis and Electrochemical Capacitance Performance of Nanostructured Polyaniline,O633.21
  4. An Experimental Study on the Mechanism Controlling Trace Metal Distribution in Surface Water during Water/Colloid Interactoins,X52
  5. Study on Purification Process and Functional Product of Inulin,TS201
  6. Study on Pressure-Swing-Adsorption Enrichment of Coalseam Methane,TD712
  7. Easy regeneration of desulfurization and denitrification agent with high surface area and mechanistic study design,X701.3
  8. Modified mesoporous silica and its adsorption studies CO_2,X701
  9. A mixture of carbon dioxide and nitrogen or methane adsorption separation,X701
  10. Organic esters adsorption on activated carbon,O647.31
  11. Study on Transport of Nitrate-N and Application of Model in Main Soils in the Huang-Huai-Hai Plain,S158
  12. Study of Adsorption of Organic Acids in Different Medium Environment on Weakly Basic Resin by Potentiometric Method,O647.3
  13. Studies on Removal of Trace-Amount Radionuclide from Low-Level Liquid Wastes by Weakly Basic Exchange Resin,X703
  14. Research on the DSD Acid Wastewater Treatment Using Macro Porous Weak Base Ion-exchange Resin D301R,X703.1
  15. A Dynamic-method Study of Modified Porous Zeolite Pellet Adsorption Column Removing Ammonia-nitrogen from Water,X52
  16. Study on Adsorption and Desorption of 6-Aminopencillanic Acid (6-APA) on Ion-Exchange Resins,TQ465
  17. LDH low concentration SO_2 removal Dynamic Behavior and amplification properties of,O643.1
  18. Study on the Removal of Organic Acid Using Ion-exchange Resin during the Production of Fuel Ethanol,TQ223.122
  19. Study on Adsorption and Desorption of VOCs with Activated Carbon,X701
  20. Studies of Removing Ammonia with Modified Zeolite from Micro-polluted Water,TU991.2

CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization > Technology and methods
© 2012 www.DissertationTopic.Net  Mobile