| Summary: | 碩士 === 嘉南藥理大學 === 環境工程與科學系 === 102 === The secondary aluminum metallurgy industry produces more than 10,000 metric tons of dross every year in Taiwan . In addition to aluminum oxide, the dross comprises metallic aluminum,aluminum nitride,aluminum carbide. Under moisture condition , it will easily release uncomfortable gases which is harmful to the environment. Moreover, improper treatment will result in severe air and water environmental problems . In this study, we try to use different basic chemical reagent, heating temperature, base concentration and liquid to solid ratio to optimize the nitrogen removal efficiency of the aluminum dross.
The results show that the nitrogen removal of the dross using sodium hydroxide as solution higher temperature is better than that using potassium hydroxide and lower temperature . Consequently , it was found that the removal of nitrogen content from aluminum dross at 70℃ for 1hr with the liquid to solid ratio of 100:1 showed the best results of 91.09% nitrogen removal efficiency .
|
|---|
