Dissertation > Excellent graduate degree dissertation topics show

Study on Adsorption Performance of Mesoporous γ-Al2O3to SO42- and F-of Beneficiation Wastewater

Author: WangYang
Tutor: ZhangXueFeng
School: Inner Mongolia University of Science and Technology
Course: Environmental Engineering
Keywords: mesoporous γ-Al2O3 dynamicexperiment adsorption SO42- F~-
CLC: X75
Type: Master's thesis
Year: 2013
Downloads: 4
Quote: 0
Read: Download Dissertation

Abstract


Tailings dam is composed of tailings accumulation, It stocks mainly used in metal andnonmetal mines to choose the ore tailings or other industrial waste residue. Ore dressing wastewaterdischarge to the tailings dam,so the water level continued to rise, the dam seepage water bring aseries of environmental problems. Some ion content exceeds bid,such as SS、F-、SO42-、Cl-andNH4+-N. With many years of circulation and enrichment, increasingly serious pollution of theenvironment. To take effective approach to management has also caused wide public concern.This article chooses homemade mesoporous γ-Al2O3as adsorbent, adsorption material fortailings dam seepage of SO42-and F-the dynamic adsorption of basic research. In smallexperimental stage, eperimental analysis from three aspects: mesoporous γ-Al2O3hape effect on theperformance of adsorption; Dynamic experiment of factors on the adsorption effect;pretreatment ofexperiment. The result show that: mesoporous γ-Al2O3have an effect on adsorptionperformance,partilcles and mesoporous γ-Al2O3consisted of SO42-and F-had better adsorptionperformance on SO42-and F-, the optimal operating conditions shall be: at the speed of0.06m/s;pH6and quality of mesoporous γ-Al2O3is250g. After pretreatment（sand filter, bentonite,electromagnetic flocculation and microcrystalline glass synergy） process adsorption effect increasedsignificantly.Through penetration experimentnal study, two forms of the same quality250g mesoporous γ-Al2O3can deal with wastewater38L and50L respectively.According to the test experiment of the parameters design and development the pilotexperiment system. Simulation of tailing dam seepage water treatment system for experiments.Wastewater through sand filter, bentonite and electromagnetic flocculation with microcrystallineglass synergy, wasteweater has carried out decoloring treatment,removal of suspended solids. Thenby parallel system which composes of zeolite and mesoporous γ-Al2O3, to adsorpt ammonianitrogen,SO42-,F-in water. Finally enter the chlorine ion permeation membrane system to reduce thecontent of Cl-. After processing system make the water up to standard-------The urban sewagerecycling industrial water water quality standards. Regeneration of saturated adsorption mesoporous γ-Al2O3, use distilled water and sodiumhydroxide solution as renewable liquid. The result show that saturated adsorption mesoporous γ-Al2O3can be regenerated by0.10mol/L sodium hydroxide solution in9minutes. In addition,saturated adsorption mesoporous γ-Al2O3used for the prepation of slag glass-ceramic, utilizationrate reached28%, the slag glass-ceramics system has superior comprehensive performance.

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. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  5. ( Hydroxy) Iron Oxide and the removal of arsenic in drinking water,O614.811
  6. Study on the Preparation of Medical Grade Glycerol from the By-product of Jatropha Biodiesel,TQ223.163
  7. The Research on Sulfate Leaching Properties of Cation-exchange Resin Used in Power Plants,TQ425.23
  8. Adsorption Effects of Phosphate and Chromium from Aqueous Solution by Adsorption Using LDH and Mg/Fe/Al Modified Montmorillonites,X703
  9. Optimization Design Andapplication of Extracting Methods of Maize (Zea Mays L.) Volatile Compounds,S513
  10. Study on Carboxyl Side Groups Containing Poly Aromatic Ether Sulfone Ketone and Modification of Epoxy,O631.3
  11. Ir surface NH 3 catalytic decomposition and oxidation reaction mechanism studies,X131.1
  12. First-Principles Study of Si/Ge Adsorption on Doping Graphene,O469
  13. Preparation of Water-Resistant Silica Gel Material and Study on Its Adsorption Properties for Two-Component VOCs,TQ127.2
  14. Formation of Microporous Mulberry Silk and Its Property,TS141
  15. First-Principles Studies on CeO2 -Based Catalysts,O469
  16. Syntheses, Structures, and Adsorpion Properties of Microporous Compounds Based on Polyoxometalates,O611.3
  17. Syntheses, Crystal Structures, and Adsorption Properties of Novel Tetracyanometallate-based Coordination Polymers,O631.3
  18. Syntheses, Structures and Properties of Metal-organic Coordination Polymers Based on Long-Chain Aromaticmulticarboxylate,O631.3
  19. First-principles Investigation of Cu, Ag, Au Atom Adsorption on CeO2 （111） and （110） Surfaces,TM911.4
  20. Molecular Conformation and Orientation and Adsorption Kinetics Models of Phospholipid at the Air/Water Interface,O647.31
  21. Study on Adsorption of Sn （Ⅳ） and Ce （Ⅲ） on TiO2 Nanoparticles,O647.32

CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > Mining, metallurgical industry,waste disposal and comprehensive utilization
© 2012 www.DissertationTopic.Net  Mobile