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Title page for etd-0826113-163350


URN etd-0826113-163350 Statistics This thesis had been viewed 690 times. Download 0 times.
Author Pei-Shan Chien
Author's Email Address No Public.
Department Chemical Engineering
Year 2012 Semester 2
Degree Master Type of Document Master's Thesis
Language zh-TW.Big5 Chinese Page Count 117
Title PARA-XYLENE REMOVAL FROM PURIFIED TEREPHTHALIC ACID PROCESS WASTEWATER BY ACTIVATED CARBON ADSORPTION
Keyword
  • Activated carbon
  • Adsorption
  • P-xylene
  • Regeneration
  • Terephthalic acid
  • Terephthalic acid
  • Regeneration
  • P-xylene
  • Adsorption
  • Activated carbon
  • Abstract Terephthalic acid is widely used in a variety of petrochemical products, such as polyethylene terephthalate, polyester fiber, and polyester film. Due to its growing demand globally especial in Asian countries, many purified terephthalic acid plants have been and are to be built that generate large quantity of wastewater with very high amount of organic content. In a crude terephthalic acid purification process, p-xylene was used to extract and recycle p-toluic acid to the crude terephthalic acid process; the resultant wastewater stream was sent to water recovery system using membranes. The residual p-xylene in the wastewater stream could damage the membranes due to its reaction with the membranes. Therefore, this study used activated carbon adsorption to remove p-xylene from the simulated wastewater of the p-xylene extraction unit. Activated carbon regeneration method and the performance of regenerated carbon on p-xylene adsorption were also evaluated. The experimental results showed that p-xylene in the wastewater could be successfully removed by an activated carbon fixed bed and super-heated steam could effectively regenerate the activated carbon to restore its p-xylene adsorption capability.
    Advisor Committee
  • Jia-Ming Chern - advisor
  • Files indicate in-campus access at 5 years and off-campus access at 5 years
    Date of Defense 2013-07-26 Date of Submission 2013-08-26


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