Adsorption characteristics of chitooligosaccharides onto activated charcoal in aqueous solutions
文献类型：CNKI期刊论文
| 作者 | YU Yu; LI Kecheng |
| 发表日期 | 2020-03-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | chitooligosaccharide adsorption activated charcoal kinetics isotherm |
| 英文摘要 | To investigate the adsorption characteristics of chitooligosaccharides in solution onto activated charcoal,we studied the optimal adsorption conditions and the adsorption mechanisms of the chitooligosaccharides onto activated charcoal,which will greatly promote the application of activated charcoal in the chitooligosaccharides separation and purification.We studied the effects of particle size of activated charcoal,pH of solution,contact time,temperature,and initial concentration of chitooligosaccharides on the adsorption behavior in batch mode experiments.Activated charcoal in fine particle size showed a high uptake of chitooligosaccharides.Weak alkaline solution(pH 8–9) was the most favorable to the adsorption.The adsorption equilibrium after 60 min was established,which followed a pseudo-second-order kinetic model.The adsorption capacity(Q_(max)) reached 0.195 g/g(chitooligosaccharides/activated charcoal) at 298 K.The adsorption was temperature-insensitive,and the adsorption isotherms could be best described by the Langmuir equation.Chitooligosaccharides adsorbed on activated charcoal could be desorbed in 50% ethanol solution in combination with an acidic condition(pH 2),reaching desorption efficiency of 96.0%.These findings are of great significance for the production and purification of amino oligosaccharides including chitooligosaccharides using activated charcoal. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Talent Research Foundation of Qingdao Agricultural University(No.1114347) |
| 卷 | v.38期:02页:37-45 |
| 语种 | 英文; |
| 分类号 | TQ424.1;O629.12 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188282]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofExperimentalMarineBiology,CenterforOceanMega-Science,InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineDrugsandBioproductsofQingdaoNationalLaboratoryforMarineScienceandTechnology 3.MarineScienceandEngineeringCollege,QingdaoAgriculturalUniversity |
| 推荐引用方式 GB/T 7714 | YU Yu,LI Kecheng. Adsorption characteristics of chitooligosaccharides onto activated charcoal in aqueous solutions. 2020. |
入库方式： OAI收割
来源：海洋研究所
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