Adsorbtion/Desorption on Activated Carbon for Chlorinated Aromatic Compounds in a Static Bed Reactor

• Main Authors: Heng Wei, Yang, 楊恒偉
• Other Authors: Chieh Lin
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/37907394873366044041

碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 95 === This research is to investigate chlorinated aromatic compounds adsorption/desorption reacting with adsorbent on furnace bed by using static bed reactor. The operation parameters include different inlet concentration, temperature, and adsorbents. We aim to understand the adsorption/desorption condition on activated carbon for chlorinated aromatic compounds in the incinerator. The primary experimental results show that (1) When the temperature is 160℃, the adsorption experiment resulte in different inlet concentration could increase gas phase molecule adsorbed on the activated carbon (2) Inlet concentration is 0.2%, the adsorption experiment showed in the different temperature could furnace bed temperature than 2,4,6-trichlorophenol point(246℃). The run of 260℃ is higher than the 160℃ run. (3) When the temperature is 260℃ and the inlet concentration is 0.2%, the adsorption experiment did resulte in the different adsorbents for could unable to provide more and absorb site. (4) Experiments with 2,4,6-trichlorophenol desorption from actived carbons were completed in 50 minutes. The results showed that the dechlorination and the chlorination both can happen. The primary compounds of dechlorination were 2-chlorophenol, 2,4-dichlorophenol, and 2,6-dichlorophenol. Pentachlorophenol appear during the chlorination reaction.(5) In the different conditions, the adsorption/desorption experiment did resulte physical adsorption as well as compounds conversion. (6) The SEM used to observe active carbon structure on the surface. The resulted show activated carbon structure to change on the surface after adsorption/desorption experiment. (7) When comparing with activated carbon and fly ash, fly ash particle forms irregular form and small size than the activated carbon particle, the ones that can't be to provide the absorb site. The surface structure of activated carbon presents more micropore, can provide more absorbing the absorb site .