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Magnetic bionanoparticles of Penicillium sp. yz11-22N2 doped with Fe3O4 and encapsulated within PVA-SA gel beads for atrazine removal
Bioresource Technology ( IF 11.4 ) Pub Date : 2018-03-31 , DOI: 10.1016/j.biortech.2018.03.103
Jiaping Yu , Huijun He , William L. Yang , Chunping Yang , Guangming Zeng , Xin Wu

A novel magnetic bionanomaterial, Penicillium sp. yz11-22N2 doped with nano Fe3O4 entrapped in polyvinyl alcohol-sodium alginate gel beads (PFEPS), was successfully synthesized. The factors including nutrient substance, temperature, pH, initial concentrations of atrazine and rotational speeds were presented and discussed in detail. Results showed that the highest removal efficiency of atrazine by PFEPS was 91.2% at 8.00 mg/L atrazine. The maximum removal capacity for atrazine was 7.94 mg/g. Meanwhile, it has been found that most of atrazine were removed by metabolism and degradation of Penicillium sp. yz11-22N2, which could use atrazine as the sole source of either carbon or nitrogen. Degradation kinetics of atrazine conformed to first-order kinetics model. The intermediates indicated that the possible pathway for atrazine degradation by PFEPS mainly included hydrolysis dechlorination, dealkylation, side-chain oxidation and ring-opening.



中文翻译:

青霉菌的磁性生物纳米粒子。yz11-22N2掺杂Fe 3 O 4并封装在PVA-SA凝胶珠中,用于去除r去津

新型磁性生物纳米材料,Penicillium sp。成功地合成了掺入聚乙烯醇-海藻酸钠凝胶珠(PFEPS)中的纳米Fe 3 O 4掺杂的yz11-22N2。介绍并详细讨论了营养物质,温度,pH,阿特拉津的初始浓度和转速等因素。结果表明,在8.00 mg / L阿特拉津时,PFEPS去除阿特拉津的最高效率为91.2%。阿特拉津的最大去除量为7.94 mg / g。同时,已经发现,大部分阿特拉津通过青霉的代谢和降解而被去除。sp。yz11-22N2,它可以使用at去津作为碳或氮的唯一来源。阿特拉津的降解动力学符合一级动力学模型。中间体表明,PFEPS降解阿特拉津的可能途径主要包括水解脱氯,脱烷基,侧链氧化和开环。

更新日期:2018-03-31
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