Dissertation > Excellent graduate degree dissertation topics show

Study on Sludge Activated Carbon Preparation and Its Adsorption Properties of Phenol and Nitrobenzene

Author: LiDaoJing
Tutor: ZhangLiQiu
School: Beijing Forestry University
Course: Environmental Science
Keywords: Excess sludge Activated Carbon Phenol Nitrobenzene Adsorption kinetics Adsorption mechanism
CLC: X703
Type: Master's thesis
Year: 2011
Downloads: 167
Quote: 0
Read: Download Dissertation

Abstract


Research excess sludge of municipal wastewater treatment plant sludge-based activated carbon as the main raw material preparation, resource utilization of excess sludge at the same time, understand the nature of the sludge-based activated carbon adsorption characteristics of phenol and nitrobenzene. Orthogonal experiment to determine the optimum conditions for the preparation of activated carbon to iodine value as index. Binding the iodine value of the activated carbon, the specific surface area, pore size distribution, surface morphology, surface functional groups and the surface potential, to evaluate the nature of the activated carbon prepared. The system sludge carbon adsorption of phenol and nitrobenzene, and compared with the purchase of wood commodities activated carbon, investigated the adsorption characteristics of phenol and nitrobenzene. The results show that: in optimum conditions: zinc chloride concentration of 30% zinc shavings than 1:0.8, activation temperature 600 ℃, activation time 60 min, the corncob doping ratio under 50% activated carbon Iodine value 678 mg / g, BET specific surface area of ??712.8 m2 / g. Pure sludge system was activated carbon (SAC) is lower than the surface area of ??the surface functional groups of acidic groups mainly phenol and nitrobenzene adsorption kinetics data are most in line with the fake two adsorption kinetic equation. Phenol molecular diameter larger, more developed in hole SAC slightly greater than the rate of adsorption of phenol commodity carbon (MAC). Nitrobenzene molecules smaller diameter, the adsorption rate was mainly associated with the number of pores on the SAC adsorption rate is much smaller than the MAC. SAC the nitrobenzene adsorption value of greater than phenol adsorption value, low specific surface area, and its aqueous solution of phenol and nitrobenzene saturated adsorption volume low than the MAC. Phenol and nitrobenzene adsorption curve on the SAC were S-type and L-type, indicating that the water molecules are strongly competitive adsorption of phenol, nitrobenzene role of weak competition. Then based on the analysis of the nature of the activated carbon and the two organisms, initially inferred phenol adsorption depends mainly on the ratio of surface area of ??the activated carbon, and nitrobenzene adsorption value jointly determined by the specific surface area and the surface functional groups. This inference adsorption compared results from the SAC and MAC specific surface area and the saturated adsorption amount of correspondence between the aqueous phase and the organic phase is validated. Wherein the specific surface area of ??the SAC MAC-1/4, the phenol adsorption value MAC, 1/4, the nitrobenzene adsorption value of 1/3 of the MAC. SAC phenol adsorption value compared to the water in the organic phase, the the nitrobenzene adsorption of low value compared to the water. The nitrobenzene adsorption value compared to MAC the water is essentially the same the the nitrobenzene adsorption value greatly reduce. These results further indicate that the hydrophobicity and polarity of the organic adsorption in an aqueous solution of phenol and nitrobenzene greater impact. Of nitrobenzene polar hydrophobic than phenol, hydrophobicity makes the competitive adsorption of water molecules weaker polarity makes induction forces between phenol and SAC, SAC nitrobenzene adsorption value is greater than the phenol adsorption value.

Related Dissertations

  1. Preparation of Based on the Phenolic Resin of Activated Carbon and Adsorption-Photopcatalytical Character of Supported TiO2,TQ424.19
  2. Study on Activated Carbon Supported Cerium Catalytic Ozone Oxidation of Chloramphenicol,X703
  3. Under microaerobic conditions closed calcium carbide furnace exhaust COS gas adsorption purification,X781
  4. Effects of Enzymes on Metabolism of Polycyclic Aromatic Hydrocarbons in Plant,X173
  5. Preparation of Activated Carbon from Tobacco Stems and Application for Low Concentration Phosphine Adsorption,X712
  6. Study of Nitrobenzene Wastewater’s Treatment by Combination of Immobile Phanerochaete Chrysosporium and Activated Sludge,X703
  7. Theeffect of Environmental Factor on Rooting Culture of Paeonia Suffruticosa in Vitro,S685.11
  8. Adsorption Effects of Phosphate and Chromium from Aqueous Solution by Adsorption Using LDH and Mg/Fe/Al Modified Montmorillonites,X703
  9. Study on the Algae-Lytic Mechanism of Algicidal Bacteria on Microcystis Aeruginosa and the Algiciadal Substance Characteristics,X173
  10. Synthesis and Application of New Halogen-free Flame Retardant Cotton with Expandable Anti-wrinkle Agent PNX,TQ314.248
  11. Study on Oxidation Treatment of Phenol Contaminted Soil Using Potassium Ferrate,X53
  12. Preparation of Electrode by Electrodeposition and Study on Performance of Degradation Phenol Wastewater,X703
  13. Research on Isolation and Polyphasic Taxonomy of a Phenol Tolerant Novel Species-Comamonas Zonglianii BF-3~T,X172
  14. Development of Functional Automotive Interior Textiles,TS106.6
  15. Adsortions of Dye by Modified Activated Carbon and Heavy Metals by Rice Husk-Based Activated Carbon,X703
  16. Effects of Different Vegetation Restoration Types on Soil Carbon, Nitrogen and Microbial Flora in Guandi Mountain,S154.4
  17. Study on the Treatment of Domestic Wastewater by Sequencing Batch Membrane Bioreactor,X703
  18. Effects of Phenol on Digestive Function of Moina Macrocopa,X174
  19. Influence of Aromatic and Nitrogen Compounds on Desulfurization onto Activated Carbon,TE624.5
  20. Preparation of Phenol Molecularly Imprinted Polymers on the Surface of Silica and Its Application in DGT Technique,O621.2
  21. Studies on the Catalytic Performance of Modified Activated Carbon in the Regeneration of Fe(Ⅱ)EDTA Solution,TQ424.1

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