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Influential lead uptake using dried and inactivated-fungal biomass obtained from Panaeolus papilionaceus: biological activity, equilibrium, and mechanism
Biomass Conversion and Biorefinery ( IF 4 ) Pub Date : 2024-04-15 , DOI: 10.1007/s13399-024-05584-4
Zeynep Mine Şenol , Zehra Saba Keskin , Emine Dinçer , Amina Ben Ayed

In this study, the use of fungal (Panaeolus papilionaceus) biomass as a biosorbent was investigated to effectively remove Pb2+ ions from aquatic medium. The removal of Pb2+ ions using a fungal biosorbent was examined in a batch system in terms of initial solution pH, temperature, time, and initial Pb2+ concentration. Optimal operating conditions for biosorption of Pb2+ ions; pH: 4.5, T: 25 °C, and t: 24 h. The max biosorption capacity for Pb2+ ions was found to be 31.2 mg g−1 from the Langmuir model. Thermodynamic studies showed that Pb2+ ions biosorption into fungal biomass was possible, spontaneous, and endothermic. Additionally, the antimicrobial activity and antibiofilm activity of the extract of fungus were also investigated. It was determined that the fungal extract did not have antimicrobial properties. On the other hand, the extract has been shown to have the potential to prevent biofilm formation. 1 mg of the extract prevented the biofilm formation of Staphylococcus aureus by 87.85%. It has been observed that the biosorption mechanism of Pb2+ ions into fungal biomass includes the steps of surface biosorption, film diffusion, and intra-particle diffusion.



中文翻译:

使用从Panaeolus papilionaceus获得的干燥和灭活的真菌生物质影响铅的吸收:生物活性、平衡和机制

在这项研究中,研究了使用真菌(Panaeolus papilionaceus)生物质作为生物吸附剂来有效去除水生介质中的Pb 2+离子。在批处理系统中,根据初始溶液pH、温度、时间和初始Pb 2+浓度检查了使用真菌生物吸附剂去除Pb 2+离子的情况。 Pb 2+离子生物吸附的最佳操作条件; pH:4.5,T:25°C,t:24 小时。根据Langmuir 模型发现Pb 2+离子的最大生物吸附能力为31.2 mg g -1 。热力学研究表明,Pb 2+离子生物吸附到真菌生物质中是可能的、自发的和吸热的。此外,还研究了真菌提取物的抗菌活性和抗生物膜活性。经确定,真菌提取物不具有抗菌特性。另一方面,该提取物已被证明具有防止生物膜形成的潜力。 1毫克提取物可阻止87.85%的金黄色葡萄球菌生物膜形成。据观察,Pb 2+离子进入真菌生物质的生物吸附机制包括表面生物吸附、膜扩散和颗粒内扩散步骤。

更新日期:2024-04-15
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