文献类型：期刊文献

英文题名：Adsorption of copper ions on Magnolia officinalis residues after solid-phase fermentation with Phanerochaete chrysosporium

作者：Tao, Fengyun[1,2];Liu, Yangping[1];Chen, Junliang[1];Wang, Peng[1];Huo, Qing[1,2]

第一作者：陶凤云;Tao, Fengyun

通讯作者：Huo, Q[1];Huo, Q[2]

机构：[1]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]Beijing Key Lab Biomass Waste Resource Utilizat, Beijing 100023, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]corresponding author), Beijing Key Lab Biomass Waste Resource Utilizat, Beijing 100023, Peoples R China.|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2019

卷号：17

期号：1

起止页码：1173-1184

外文期刊名：OPEN CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000505256400001)】；

基金：This work was financially supported by National Natural Science Foundation of China (Grant No. 11475020 and No. 81511140298), project of Beijing Key Laboratory of Biomass Waste Resource Utilization and high-level students development plan in Beijing colleges and universities.

语种：英文

外文关键词：Magnolia officinalis residues; fermentation modification; adsorbent; copper ion; adsorption model

摘要：The disposal of residues while manufacturing Chinese medicine has always been an issue that concerns pharmaceutical factories. Phanerochaete chrysosporium was inoculated into the residues of Magnolia officinalis for solid-phase fermentation to enzymatically hydrolyze the lignin in the residues and thus to improve the efficiency of removal of the copper ions from residues for the utilization of residues from Chinese medicine. With the increase in activities of lignin-degrading enzymes, especially during the fermentation days 6 to 9, the removal rate of copper ions using M. officinalis residues increased dramatically. The rate of removal reached the maximum on the 14th day and was 3.15 times higher than the initial value. The rate of adsorption of copper ions on the fermentation-modified M. officinalis residues followed the pseudo-second-order kinetics. The adsorption isotherms were consistent with the Freundlich models. The adsorption enthalpy was positive, indicating that it was endothermic and elevation in temperature was favorable to this adsorption process. The adsorption free energy was negative, implying the spontaneity of the process. The copper ions adsorbed could be effectively recovered using 0.2 M hydrochloric acid solution. After five successive cycles of adsorption-regeneration, the fermentation-modified M. officinalis residues exhibited a stable adsorption capacity and greater reusability. The M. officinalis residues fermented with P. chrysosporium are low-cost and environmentally friendly copper ions adsorbent, and this preparation technique realizes the optimum utilization of Chinese medicine residues.