应用化学
應用化學
응용화학
CHINESE JOURNAL OF APPLIED CHEMISTRY
2009年
12期
1450-1455
,共6页
孟冠华%欧承慧%陶冬民%刘宝河
孟冠華%歐承慧%陶鼕民%劉寶河
맹관화%구승혜%도동민%류보하
AJS-02树脂%NDA-150树脂%Cu~(2+)%吸附%脱附
AJS-02樹脂%NDA-150樹脂%Cu~(2+)%吸附%脫附
AJS-02수지%NDA-150수지%Cu~(2+)%흡부%탈부
AJS-02%NDA-150 resin%Cu~(2+)%adsorption%desorption
合成了一种L-酪氨酸修饰的螯合吸附树脂(AJS-02),并与超高交联树脂NDA-150作对比,研究了其对Cu~(2+)的吸附和脱附行为. 静态实验结果表明,在研究的浓度范围内,吸附平衡数据符合Langmuir等温吸附方程. Cu~(2+)在AJS-02上的吸附量大于其在NDA-150上的吸附量. Cu~(2+)在2种树脂上的吸附过程为物理和化学作用的共同结果. 吸附动力学符合液膜扩散方程,液膜扩散为吸附速率的主要控制步骤. 动态吸附-脱附实验表明,动态穿透吸附量和总吸附量分别为4.05×10~(-3)和6.44×10~(-3) mol/L,使用5%HCl进行脱附,脱附率达到90%以上.
閤成瞭一種L-酪氨痠脩飾的螯閤吸附樹脂(AJS-02),併與超高交聯樹脂NDA-150作對比,研究瞭其對Cu~(2+)的吸附和脫附行為. 靜態實驗結果錶明,在研究的濃度範圍內,吸附平衡數據符閤Langmuir等溫吸附方程. Cu~(2+)在AJS-02上的吸附量大于其在NDA-150上的吸附量. Cu~(2+)在2種樹脂上的吸附過程為物理和化學作用的共同結果. 吸附動力學符閤液膜擴散方程,液膜擴散為吸附速率的主要控製步驟. 動態吸附-脫附實驗錶明,動態穿透吸附量和總吸附量分彆為4.05×10~(-3)和6.44×10~(-3) mol/L,使用5%HCl進行脫附,脫附率達到90%以上.
합성료일충L-락안산수식적오합흡부수지(AJS-02),병여초고교련수지NDA-150작대비,연구료기대Cu~(2+)적흡부화탈부행위. 정태실험결과표명,재연구적농도범위내,흡부평형수거부합Langmuir등온흡부방정. Cu~(2+)재AJS-02상적흡부량대우기재NDA-150상적흡부량. Cu~(2+)재2충수지상적흡부과정위물리화화학작용적공동결과. 흡부동역학부합액막확산방정,액막확산위흡부속솔적주요공제보취. 동태흡부-탈부실험표명,동태천투흡부량화총흡부량분별위4.05×10~(-3)화6.44×10~(-3) mol/L,사용5%HCl진행탈부,탈부솔체도90%이상.
An adsorption resin modified by L-tyrosine acid, AJS-02, was synthesized, and its adsorption-desorption performance for Cu~(2+) was compared with that of NDA-150. The equilibrium adsorption data were fitted to Langmuir isotherm and the adsorption capacity for AJS-02 was higher than that of NDA-150, which may be attributed to the polar groups in the network of AJS-02. The adsorption of Cu~(2+) to AJS-02 involved physisorption and chemisorption. Kinetic analysis shows that the adsorption rate was mainly governed by the film diffusion. Dynamic adsorption and desorption studies for Cu~(2+)to AJS-02 show that the breakthrough adsorption capacity and the total adsorption capacity were 4.05×10~(-3) and 6.44×10~(-3) moles per liliter resin, respectively. Above 90% regeneration efficiency for the adsorbent was achieved by the desorption of 5% hydrochloric acid.
