| 发酵废渣黑根霉菌对铅离子吸附机理的研究 |
| |
| 引用本文： | 张利 孔德领 等. 发酵废渣黑根霉菌对铅离子吸附机理的研究[J]. 离子交换与吸附, 1996, 12(4): 317-323 |
| |
| 作者姓名： | 张利 孔德领 等 |
| |
| 作者单位： | 南开大学分子生物学研究所 |
| |
| 摘 要： | 发酵工业废渣黑根霉菌对Ｐｂ２＋有很好的吸附作用，饱和吸附量可达８８ｍｇ／ｇ。本文通过电子显微镜观察，能谱测定以及红外光谱测定等分析手段，研究了这种生物吸附剂对Ｐｂ２＋的吸附机理。碱处理前后黑根霉的结构及吸附量变化揭示了吸附作用点的位置。动力学研究表明，在ｐＨ４．２时，黑根霉对Ｐｂ２＋的吸附是一快速吸附过程，Ｈ＋、Ｆｅ３＋和Ｚｎ２＋对吸附有干扰，说明存在竞争吸附。
|
| 关 键 词： | 黑根霉菌，铅，吸附 |
MECHANISM STUDY OF LEAD BIOSORPTION BY RHIZOPUS NIGRICANS |
| |
| Zhang Li, Kong Deling, Tu Juan, Zhao Li, Yu Yaoting. MECHANISM STUDY OF LEAD BIOSORPTION BY RHIZOPUS NIGRICANS[J]. Ion Exchange and Adsorption, 1996, 12(4): 317-323 |
| |
| Authors: | Zhang Li Kong Deling Tu Juan Zhao Li Yu Yaoting |
| |
| Abstract: | Nonliving Rhizopus nigricans exhibits lead uptake capacity from aqueous solutions up to 88mg/g. The mechanism of lead sequestering by this type of biomasswas studied by using experimental techniques such as electron microscopy, X--rayenergy dispersion analysis and iR spectroscopy. Comparison of the uptake betweenNaOH--treated and untreated biomass shows that the adsorption takes place in thecell wall chitin structure. The kinetic study of lead biosorption revealed a very rapidrate of uptake at PH 4. 2. Interference of Fi3 and Zn2 colons with lead biosorption is indicated. |
| |
| Keywords: | Rhizopus nigricans biomass Lead Adsorption |
| 本文献已被 CNKI 维普 等数据库收录！ |
