生物加工过程Issue(2)：70-75,6.DOI:10.3969/j.issn.1672-3678.2015.02.014
N 乙酰神经氨酸在离子交换树脂AD 1上的吸附热／动力学
Adsorption equilibrium and kinetics of Neu5Ac adsorption from aqueous solution onto an anion-exchange resin
摘要
Abstract
Ionic exchanger AD⁃1 was used to study the adsorption of Neu5Ac from its aqueous solution. The maximal adsorption capacity of Neu5Ac onto the resin was 0�39 g/g, temperature independent, through a batch equilibrium system. The Langmuir isotherm was used to describe the thermodynamics. The macropore diffusion and the macropore⁃micropore diffusion in series accounted for the diffusion process of Neu5Ac- ions into the resin pores,the macropore diffusivity was 1�453×10-8 m2/min while the micropore diffusivity was 9�153 × 10-15 m2/min. The influence of the particle size on the ion⁃exchange process was also studied through the macropore⁃micropore diffusion model,which indicated that kinetics of the process could be improved by using smaller adsorbent particles. Good fitting was achifeved with the model,which verifies the accuracy of the model.关键词
Neu5Ac/离子交换吸附平衡/吸附动力学/大孔微孔扩散模型/大孔扩散模型Key words
Neu5Ac/anionic exchanger adsorption equilibrium/adsorption kinetics/macropore-micropore diffusion mode/macropore diffusion mode分类
化学化工引用本文复制引用
张旭东,吴菁岚,庄伟,应汉杰..N 乙酰神经氨酸在离子交换树脂AD 1上的吸附热／动力学[J].生物加工过程,2015,(2):70-75,6.基金项目
国家杰出青年基金（21025625）；国家高技术研究发展计划（863计划）（2012AA021202）；国家重点基础研究发展计划（973计划）（2011CBA00806）；国家自然科学基金青年基金（21106070）；长江学者和创新发展计划（PCSIRT）；江苏省高校优势学科建设工程 （）
