Dissertation > Excellent graduate degree dissertation topics show

Experimental Study on Extracting Humic Acid from Huolinhe Lignite

Author: JiangPengWei
Tutor: MaZhiJun
School: Liaoning Technical University
Course: Mineral Processing Engineering
Keywords: Lignite Humic acid Solvent Extraction rate Orthogonal test
CLC: S141
Type: Master's thesis
Year: 2011
Downloads: 99
Quote: 0
Read: Download Dissertation

Abstract


The reserves of humic acid is huge and the distribution is wide, it has been extensively used in the fields like industry, agriculture, medicine, environment protection, etc. The lignite of China is the main source of the natural humic acid becauuse of it contains a lot of humic acid. This paper adopts the method of the raw coal preoxidation by nitric acid, uses sodium pyrophosphate and sodium hydroxide solution as the extraction agents, extracting humic acid from the lignite. The results indicate that the optimal processing condition can be achieved when nitrate concentrations is 12%, acid-coal proportion is 1:4, oxidized temperature is 90℃, oxidation time is 40 min, extraction liquid concentration is 12%, liquid-solid ratio concentration 200ml/g, extraction temperature is 100℃and extraction time is 140 min, the rate of humic acid production can reach to 41.18%. The infrared spectrum analysis of the standard humic acid and the products of the test show that the products in the experiment are indeed humic acid. Preliminary discussing the mechanism of the lignite preoxidation by nitric acid and the mechanism of adopting sodium pyrophosphate and sodium hydroxide solution as the extraction agents, adopt focal sodium and naohlye as an experiment extraction agent mechanism. The route of extracting humic acid from Huolinhe lignite not only can improve the lignite comprehensive utilization value but also can increase the economic efficiency of the enterprises, it has broadly development prospect.Through comparing the infra-redspectrum of the standard humic substances and the products, the results showed the test products are indeed humic acid. Preliminary discusse the mechanism of oxidation process and extraction. Experimental study and theoretical analysis shows that the route of the test is feasible, which can be got higher rate of humic acid, and realized the comprehensive utilization and efficient utilization of the lignite, established the research foundation of the followed pilot and industrialized mass production.

Related Dissertations

  1. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  2. High hydrothermal stability of nickel-based catalyst and hydrogenation of butyne diol,TQ223.162
  3. The Research of Drying of Huolinhe Lignite,TD849.2
  4. Solvent Extraction of Zinc from Zn （Ⅱ）-NH3 Complex System by New Extractant,TF813
  5. Study on Liver-targeting Galactosylated Palmitoyl Chitosan Polymeric Micelles as Drug Carriers,R943
  6. Preliminary Study of Allelopathic Effects between Marine Algae,X173
  7. Dianchi Lake sediment heavy metal release mechanism analysis and its influencing factors,X524
  8. Study on Organic Additives Applied to Electrodeposited Copper Foil,TF811
  9. Simulation Research of Key Technique for Electromagnetic Tomography,O441.4
  10. Nitrendipine gastric floating sustained release microspheres,R94
  11. Mechanical polishing γ- aminobutyric acid synthesis precursors and the condensation reaction of Applied Research,R914
  12. Studies on the Lipase-catalyzed Esterification of Oleyl Ferulate,R914
  13. Apparent spicy chili products Fuzzy Evaluation Method,S641.3
  14. Study on the Impact of Two Water Environment Factors on the Interaction between Polycyclic Aromatic Hydrocarbons and Humic Acids,X13
  15. The Study on Saving Energy Envelop in Improving Hot and Humid Environment of Village Residences in Chongqing,TU111.4
  16. Performance and Mechanism of Simultanious Removal of Cr(Ⅵ) and As(Ⅴ) by Fe(Ⅱ) from Contaminated Water,TU991.2
  17. Study on the Comprehensive Utilization of Apple Pomace,TS255
  18. Study on Processing and Syability of Artemisia Argyi Volatile Oil-β-cyclodextrin Inclusion Compound,TQ461
  19. Based naphthalene fluorescent molecule synthesis, characterization and photophysical properties,O621.3
  20. The Study on Solvent Vapor-phase Method Degreasing Technology of Masson Pine,TQ351.4
  21. Two kinds of low molecular weight heparin (LMWH) production technology and quality standard,TQ464.5

CLC: > Agricultural Sciences > Agriculture as the foundation of science > FERTILIZERS > Farm manure
© 2012 www.DissertationTopic.Net  Mobile