Dissertation > Excellent graduate degree dissertation topics show

Preparation and Adsorption Performance of Activated Carbon Monolith

Author: ChenHanGuang
Tutor: JinJunSu
School: Beijing University of Chemical Technology
Course: Chemical Engineering and Technology
Keywords: activated carbon monolith adhesive adsorption benzene nitrogen adsorption isotherm
CLC: TQ424.1
Type: Master's thesis
Year: 2012
Downloads: 58
Quote: 0
Read: Download Dissertation

Abstract


Canisters and filters loaded with activated carbon are widely used forchemical defense and chemical accidents rescue thanks to the great adsorptionperformance of activated carbon to chemical warfare agents and toxicindustry chemicals (TICs). However, now the chemical defense equipmentscan not well meet the requirement used for chemical accidents rescue for itsshot protective time, bulk dimension, difficulties in flexibility andreplacement, and so on. Therefore, it is great significance and practical valuefor the research and development of new activated carbon materials for theimprovement of chemical protection.A new kind of material called activated carbon monolith (ACM) wassuccessfully prepared with BN09granular activated carbon and EVA resin asraw materials on the basis of screening evaluation and optimization of processparameters. Its hydrodynamic performance, compressive strength and porestructure were tested. Benzene was selected as adsorbate and its dynamicadsorptive behaviors on the ACM bed have been studied. The effects of thethickener, adhesive contents, inlet concentrations and airflow velocity on thedynamic adsorptive capacity for benzene of ACM were investigated incomparison with that of BN09granular activated carbon and ACM thatprepared with sodium carboxymethyl cellulose(CMC).The air resistance of ACM was less than that of granular activated carbonin the air volume of0.016-0.08m3/h·cm2, which can meet the demand ofadsorbing the toxic and hazardous gas in high air volume on chemical defense.The compressive strength of the ACM is more than0.12MPa per unit square centimeter area, which could be used as adsorbent for air purification. TheBET area of the ACM is about701m2/g and its micropore volume is morethan0.404mL/g, which has high benzene adsorptive capacity.The experimental results indicated that the thickener and the adhesivecontents are inversely proportional to adsorption performance; the dynamicadsorption capacity increased with the rise of benzene vapor concentrations,and the adsorption rate is all most constant; the adsorption rate increased withthe rise of the airflow velocity, and the dynamic adsorption capacity is allmost constant. The benzene dynamic adsorption capacity of ACM thatprepared with CMC has little loss in comparison with that of BN09granularactivated carbon, but its adsorption rate was very low; the benzene dynamicadsorption capacity of106.39mg/cm3and the adsorption rate of920.43min-1of this ACM was obtained in the optimal conditions, with the decline of theadsorption performance less than10%and the breakthrough time less than5%.Wheeler equation and Yoon-Nelson equation are used to correlate thedynamic adsorption data, and the correlation coefficients were from0.985to0.999, which indicated the calculated values agreed with the experimentaldata well.

Related Dissertations

  1. Density Functional Theory Study of Dimethyl Ether Adsorption on the Low-Index Pt Surface,O485
  2. Preparation of Based on the Phenolic Resin of Activated Carbon and Adsorption-Photopcatalytical Character of Supported TiO2,TQ424.19
  3. Competitive Adsorption of Phenolic/Ethanol onto Silica Fiber Effected by Ultrasound in RTM Process,TB332
  4. Study on Cosmogonical Myth of Bon,B989.1
  5. Studies on Synthesis, Characterization and Properties of Fe-V Co-doped TiO2 Catalyst,O614.411
  6. Establishment of ELISA for Detecting Cd-MT of Pteria Penguin and Preliminary Study of ELISA-kit,X835
  7. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  8. ( Hydroxy) Iron Oxide and the removal of arsenic in drinking water,O614.811
  9. Under microaerobic conditions closed calcium carbide furnace exhaust COS gas adsorption purification,X781
  10. The Research about the Processing and Performance of Waterproof Breathable Laminated Fabrics,TS195.6
  11. Ion Exchange Removal of Hexavalent Selenium in Raw Water,X703
  12. Study on the Chimisorption Removal of FCC Gasoline Sulfur Compound,TE624.55
  13. Preparationandapplication of Pan-Based Amphoteric Ion Exchange Fiber,TQ342.31
  14. Study on the Preparation of Medical Grade Glycerol from the By-product of Jatropha Biodiesel,TQ223.163
  15. Experiment Study of the Biogas Purification Process by Zeolite Filling Washing,TQ221.11
  16. Study on the Synthesis and Adsorption Behaviour of Chitosan Derivative,TS254.9
  17. Preparation of Activated Carbon from Tobacco Stems and Application for Low Concentration Phosphine Adsorption,X712
  18. Adsorption Effects of Phosphate and Chromium from Aqueous Solution by Adsorption Using LDH and Mg/Fe/Al Modified Montmorillonites,X703
  19. Optimization Design Andapplication of Extracting Methods of Maize (Zea Mays L.) Volatile Compounds,S513
  20. Analysis of Adsorption Mechanism of Drinking-water Defluorination Material Bio-F,O621.25
  21. Preparation of Layered Double Hydroxide Material and Research Adsorption Capacity,O611.4

CLC: > Industrial Technology > Chemical Industry > Reagents and the production of pure chemicals > Adsorbent > Activated carbon
© 2012 www.DissertationTopic.Net  Mobile