A Study on the Adsorption of Manganese(Ⅱ) and Cobalt(Ⅱ) Ions with using Strong Acidic Cation Exchange Resin

• Main Authors: Chen-En Wu, 吳承恩
• Other Authors: 蔡德華
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/2yhvzy

碩士 === 國立臺北科技大學 === 化學工程研究所 === 97 === In this study, the strong acidic cation exchange resin C-160 was used as the solid absorbent to adsorb and exchange the heavy metal manganese(Ⅱ) and cobalt(Ⅱ) in the aqueous solution. To probe into the characteristic of the static adsorption process, we examined the effects of changing metal concentration, initial pH value, the metal proportion of manganese(Ⅱ) and cobalt(Ⅱ), the resin grams and the work temperature. The results of experiments show that: the adsorption of C-160 resin to metal is fast and the time of reaching adsorbed balance is longer than 120 minutes. The saturated adsorbing quantity of the resin for the metal concentration is above 44 mM. The saturation absorbed amount for manganese(Ⅱ) and cobalt(Ⅱ) are 1.543 mmol/g and 1.515 mmol/g. In the binary composition solution system of manganese(Ⅱ) and cobalt(Ⅱ), the selectivity of resin for manganese(Ⅱ) is higher than that of cobalt(Ⅱ). As initial pH value was decreased, the adsorbed balance amount reduced. As for the working temperature, the adsorbed balance amount increased with temperature. The resin grams followed the opposite trend. For the binary composition solution system, fixing the metal proportion of cobalt(manganese) at 1, it was observed that with the metal proportion of manganese(cobalt) increased, the adsorbed balance amount of the resin for manganese(cobalt) increased but that of for cobalt(manganese) decreased.