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URN etd-0901115-110424 Statistics This thesis had been viewed 1441 times. Download 50 times. Author Li-Ling Huang Author's Email Address No Public. Department Chemical Engineering Year 2014 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 82 Title Adsorption and desorption of benzoic acid with copper-modified activated carbon Keyword Methanol Activated carbon Adsorption Benzoic acid Desorption Desorption Benzoic acid Adsorption Activated carbon Methanol Abstract In the recent years the industry develops very fast, thus many organic solvents and a large number of synthetic chemicals are used. Pure terephthalic acid ( PTA) is primarily used in the production of polyester fiber with major demand boost in Asia, therefore PTA process wastewater discharge increases with the increase in PTA demand. PTA process wastewater contains a lot of organic acids that are harmful to not only aquatic environment but also to human kind. In this study, activated carbon was modified with copper nitrate by impregnation method, and then used to adsorb the PTA process byproduct - benzoic acid, followed by desorption with methanol. According to the literature, copper in the modified activated carbon can form complexes with organic compounds, and thus increase the amount of organic compounds adsorbed by the activated carbon. The experimental results showed that benzoic acid in the wastewater could be successfully removed by copper-modified activated carbon and the adsorption amounts would not decrease at higher temperatures. It is quite possible to use methanol to desorb benzoic acid and to recover both benzoic acid and methanol. Advisor Committee Jia-Ming Chen - advisor
Fu-Chang Huang - co-chair
Tai-Shang Chen - co-chair
Files Date of Defense 2015-07-29 Date of Submission 2015-09-01