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"Determination of design and operating paremeters for activated

"Determination of design and operating paremeters for activated 」於資料集「EPQSummary_Air」由單位「行政院環境保護署」的郭先生所提供,聯繫電話是02-2311-7722 EXT.2399,最近更新時間為:2022-01-15 01:13:50。 欄位Project Title的內容是"Determination of design and operating paremeters for activated carbon bed in liquid crystal display recycling plant and development of novel Hg carbon adsorbent by microwave-assistant technology" , 欄位Project Subject的內容是" The goals of this project are (1) acquiring commercial activated carbon (SAC) and preparing novel Hg adsorbent, (2) performing Hg adsorption tests, and (3) conducting kinetic analysis of Hg adsorption breakthrough curves and obtaining designing parameters and suitable operating parameters of Hg adsorber. To prepare novel Hg adsorbent, a high-sulfur containing char named waste oil sands coke, from oil refinery processes, was selected as the precursor to produce activated carbon via microwave-assisted activation. The experimental results showed that the production yield of activated carbon decreased as the power level or activation time increased. The inherent sulfur contents of activated carbons mostly escaped during the microwave chemical activation process. In contrast to conventional chemical activation, the duration of microwave chemical activation was relatively short. The pores of activated carbons from conventional chemical activation are micropores, similar to those from microwave chemical activation. Microwave chemical activation is a time-effective methodology to prepare activated carbon. However, the properties of activated carbons from microwave activation would be more unstable and unpredictable compared with conventional chemical activation. The adsorption efficiency of the coke-made activated carbon is similar to commercial SAC. Therefore, the novel adsorbent has the potential for commercializing. Additionally, we compared two kinds of commercial activated carbons which are used for adsorbing mercury vapor. The results showed that the adsorption efficiency of commercial chlorine-impregnated activated carbon was greater than that of sulfur-impregnated activated carbon. Though the amount of sulfur content in commercial SAC was similar to the lab-synthesized SAC, the adsorption efficiency of commercial SAC was smaller than that of the other. This result may be due to the diversity of functional groups by different impregnation temperature conducted and the decrease in surface area. The operation specification of commercial SAC is in accordance with the current standard for replacement frequency of Hg-removal activated carbon for the vent hood system used for recycling of waste electrical and electronic equipment. Based on the characteristics of different activated carbons examined in this study, the current specifications could be modified based on the properties of activated carbon used." , 欄位Project Year的內容是2018 , 欄位Organizer的內容是"Recycling Fund Management Board" , 欄位Executive Unit的內容是"國立臺灣大學環境工程學研究所" , 欄位Reporting download URL的內容是https://epq.epa.gov.tw/project/filedownload.aspx?fid=180080 , 欄位Publish Date的內容是20190101

Project Title

"Determination of design and operating paremeters for activated carbon bed in liquid crystal display recycling plant and development of novel Hg carbon adsorbent by microwave-assistant technology"

Project Subject

" The goals of this project are (1) acquiring commercial activated carbon (SAC) and preparing novel Hg adsorbent, (2) performing Hg adsorption tests, and (3) conducting kinetic analysis of Hg adsorption breakthrough curves and obtaining designing parameters and suitable operating parameters of Hg adsorber. To prepare novel Hg adsorbent, a high-sulfur containing char named waste oil sands coke, from oil refinery processes, was selected as the precursor to produce activated carbon via microwave-assisted activation. The experimental results showed that the production yield of activated carbon decreased as the power level or activation time increased. The inherent sulfur contents of activated carbons mostly escaped during the microwave chemical activation process. In contrast to conventional chemical activation, the duration of microwave chemical activation was relatively short. The pores of activated carbons from conventional chemical activation are micropores, similar to those from microwave chemical activation. Microwave chemical activation is a time-effective methodology to prepare activated carbon. However, the properties of activated carbons from microwave activation would be more unstable and unpredictable compared with conventional chemical activation. The adsorption efficiency of the coke-made activated carbon is similar to commercial SAC. Therefore, the novel adsorbent has the potential for commercializing. Additionally, we compared two kinds of commercial activated carbons which are used for adsorbing mercury vapor. The results showed that the adsorption efficiency of commercial chlorine-impregnated activated carbon was greater than that of sulfur-impregnated activated carbon. Though the amount of sulfur content in commercial SAC was similar to the lab-synthesized SAC, the adsorption efficiency of commercial SAC was smaller than that of the other. This result may be due to the diversity of functional groups by different impregnation temperature conducted and the decrease in surface area. The operation specification of commercial SAC is in accordance with the current standard for replacement frequency of Hg-removal activated carbon for the vent hood system used for recycling of waste electrical and electronic equipment. Based on the characteristics of different activated carbons examined in this study, the current specifications could be modified based on the properties of activated carbon used."

Project Year

2018

Organizer

"Recycling Fund Management Board"

Executive Unit

"國立臺灣大學環境工程學研究所"

Publish Date

20190101

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