Adsorption of manganese(Ⅱ) on cellulose fibre and effect of different states of manganese(Ⅱ) on decomposition of hydrogen peroxide
The adsorption of “fresh Mn(Ⅱ) and “aged Mn(Ⅱ) on eucalyptus holocellulose was characterized under alkaline conditions. There was a good linear relationship between adsorbed Mn(Ⅱ) on cellulose and free Mn(Ⅱ) added. “Aged Mn(Ⅱ) showed stronger affinities to cellulose compared to “fresh Mn(Ⅱ) in the range of 0-18.18 μmol/gcellulose Mn(Ⅱ) added. Approximately 40% of free “aged Mn(Ⅱ) added was adsorbed on cellulose fiber. Adsorption of “aged Mn(Ⅱ) reached the ceiling about 7.66 μmol/gcellulose. Moreover, the effect of different states of Mn(Ⅱ) on catalytic decomposition of hydrogen peroxide, such as free “aged Mn(Ⅱ) and adsorbed “aged Mn(Ⅱ) on cellulose, was assessed. “Aged Mn(Ⅱ) adsorbed on cellulose fibre showed similar influence on peroxide decomposition compared to free “aged Mn(Ⅱ). In addition, DTPA showed a strong stability on peroxide with free “aged Mn(Ⅱ), and it was better to add alkali and hydrogen peroxide to DTPA reaction mixture solution as quickly as possible. MgSO4 combined with DTPA was the best way to stabilize peroxide in presence of “aged Mn(Ⅱ) adsorbed on cellulose fibre, and nearly half of peroxide could remain after 40 min.
Zhang Xuejin Li Youming Lu Ruijiang
State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangdong; China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）