Dissertation > Excellent graduate degree dissertation topics show

Research on Adsorption of Formaldehyde on Material Prepared by Amino Acid

Author: ZhengXi
Tutor: TianSenLin
School: Kunming University of Science and Technology
Course: Environmental Engineering
Keywords: Formaldehyde Amino acids Indoor air Adsorption
CLC: X51
Type: Master's thesis
Year: 2010
Downloads: 74
Quote: 0
Read: Download Dissertation

Abstract


In recent years, as people's living standards gradually improved indoor air pollution problems have become increasingly prominent, causing widespread concern in the community. Formaldehyde as one of the major indoor air pollutants can enter the body through the respiratory system and skin, the human body has the potential, widespread, long-term harm. Therefore, the purification of formaldehyde in the indoor air of great significance. Formaldehyde in indoor air by indoor decoration materials in a continuous, slow release, and constantly tired set of indoor formaldehyde concentration exceeded indoors. Thus, the purification method of formaldehyde need to be effective in the long range. Characteristics of formaldehyde in indoor air, there is an urgent need to study a new approach to a solution of formaldehyde pollution. In this paper, based on the chemical combination to reduce indoor formaldehyde concentration of ideas, research an adsorption of formaldehyde in indoor air purification materials. The use of the reaction of an amino acid with formaldehyde to generate the principles of the hydroxymethyl derivatives, amino acids for the purification of the active ingredient, the amino acid supported on the carrier blank purification, to prepare a processing formaldehyde adsorption purification materials. Based on the idea of ??the indoor environment can be applied, the initially selected five kinds of purification carrier: quantitative filter paper (fast, slow, medium speed), microporous membrane fabric. As purifying the active components selected according to the amino acid structure of the three typical amino acids: glycine, lysine, alanine. The prepared formaldehyde adsorption purification material was placed in the adsorption purifier, formaldehyde gas slowly and at a constant rate through the adsorption purification materials, contrast by purification of the formaldehyde concentration in the material before and after change to measure the effect of purifying material. The main findings are as follows: (1) carrier screening: load is that three kinds of amino acids were made of 15 kinds 5 kinds of vector the adsorption purification materials, comparative study of the adsorption purification materials made of each amino acid derived purifying effect : Slow quantitative filter paper ≈ speed quantitative filter paper the ≈ fast quantitative filter paper gt; microporous membrane of gt; fabric, adsorption effects associated with the amino acid load materials as well as materials aperture size. The greater the load, the smaller the aperture, the better the adsorption effect. (2) the active ingredient selection: load the three amino acids in the selected blank vector - Slow quantitative filter paper, to prepare three kinds of adsorption purification materials. Comparative study of the three kinds of amino acids as the effect of the material of the active ingredient adsorption purification, purification effect as follows: glycine GT ≈ lysine,; alanine. (3) of various factors on the purification effect: glycine as active ingredient, the immersion time of the preparation of the adsorbent material were studied, the concentration of the impregnating solution, the pH of the impregnating solution, cleaning temperature, the concentration of formaldehyde and formaldehyde gas flow rate on the purifying effect the influence of the draw impregnation time no significant effect on the adsorption effect, the higher the concentration of the impregnating solution, the better the adsorption effect, suitable impregnation concentration of 20%, the higher the pH of the impregnating solution, the more favorable the adsorption of formaldehyde gas, suitable impregnation pH value 10; elevated temperature is not conducive to the removal of formaldehyde. With the increase in the concentration of formaldehyde, the removal efficiency decreased, but the total removal of formaldehyde increases.

Related Dissertations

  1. The Study on Arabidopsis Thaliana Heat Shock Factor HSFA 1d Response to Formaldehyde Stress,Q945.78
  2. Studies on the Preparation of 20% Chlorpyrifos CS and Its Analytic Methods,S482.3
  3. Concentration and Impact Factors of Typical VOCs in Indoor Air in Hangzhou,X51
  4. Study the Detection and Adsorption of Formaldehyde in Indoor Air,X831
  5. Based magnetic fluid assembled hollow magnetic carbon microspheres and functional complexes,TB383.4
  6. Study on the Characteristic of High Selective Purify Nitrogen Dioxide in Medical Nitric Oxide by Activated Carbon,TQ126.24
  7. Early Cytogenetic Damage of Plywood Workers Occupationally Exposed to Formaldehyde,R131
  8. Ag / CTS imprinted gel Preparation and properties of the ball,TQ424
  9. Subcritical hydrothermal treatment of municipal sewage sludge and its application,X703
  10. Preparation and eggplant stalks activated carbon adsorption of dye wastewater,O647.32
  11. Fly Ash - PNP and MB regeneration process wastewater characteristics,X703
  12. Agricultural urea resin formaldehyde emission laws and regulation,TQ323
  13. Interior decoration of formaldehyde in air pollution after detection, analysis and control,X831
  14. Straw pots formaldehyde release on seed germination and Countermeasures Discussion,S359
  15. Research of Schisandra to Exercise Rat’s Immune Function and Antioxidation in Formaldehyde Environment.,R114
  16. Studies on the Sorption Behaviors of Phenanthrene and Methylene Blue on Marine Sediments,X703
  17. Adsorption of Carbofur Onto Organic Bentonite in Water,X703
  18. The Genetic Evolution of H5N1 Subtype Influenza Virus Isolated and Identified from Water of the Tibetan Plateau,S852.65
  19. Synthesis of Dithioamino Starch Xanthogenate and Its Applicationin Absorption of Heavy Metal lons in a Aqueous Solutions,X703
  20. Adsorption and Oxidation of CO on the Highly Active Catalyst CU-CEO2 （111）: First Principles Study,O469
  21. Microbial immobilization technology and immobilized bioreactor wastewater isophthalonitrile,X786

CLC: > Environmental science, safety science > Environmental pollution and its prevention > Atmospheric pollution and its control
© 2012 www.DissertationTopic.Net  Mobile