Pediococcus acidilactici 对水溶液中氯苯菊酯的生物吸附：动力学、等温线和机理。

IF 3.3 2区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Journal of the Science of Food and Agriculture Pub Date : 2024-11-13 DOI:10.1002/jsfa.14016

Mengmei Zhang, Xin Dai, Yijie Lu, Yunxiao Wan, Xingjie Wang, Jianlong Li, Kaidi Hu, Qin Li, Ning Zhao, Aiping Liu, Xinjie Hu, Yong Yang, Likou Zou, Shuliang Liu

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引用次数: 0

摘要

背景：Pediococcus acidilactici 是一种去除拟除虫菊酯类杀虫剂的有效吸附剂。本研究采用吸附测量法、扫描电镜法和傅立叶变换红外光谱法研究了 P. acidilactici D15 的生物吸附特性和机理。利用等温线和动力学模型分析了生物吸附过程：Langmuir等温线模型最好地描述了氯氰菊酯的生物吸附过程，P. acidilactici D15的最大吸附容量为21.404毫克/克。生物吸附似乎涉及到具有均匀作用力的单层覆盖。伪二阶模型也十分吻合。速率控制步骤包括颗粒内扩散、薄膜扩散和化学吸附。参与氯氰菊酯生物吸附的主要细胞成分是外多糖、球形体和细胞壁，尤其是肽聚糖。细胞表面的蛋白质、多糖和肽聚糖中的官能团（-OH、-NH、-CH3、-CH2、-CH、-CONH-、-CO 和 -C-O-C-）可能在与氯氰菊酯的结合中发挥了作用。此外，P. acidilactici D15 还能有效减少腌制废水中的氯氰菊酯：这些研究结果表明，P. acidilactici D15 可能是一种减少农药残留的潜在制剂，为处理含有此类农药残留的腌制废水奠定了基础。© 2024 化学工业协会。

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Biosorption of cypermethrin from aqueous solutions by Pediococcus acidilactici: kinetics, isotherms, and mechanisms.

Background: Pediococcus acidilactici is an effective adsorbent for removing of pyrethroid insecticides. This study investigated the biosorption characteristics and mechanisms of P. acidilactici D15 using adsorption measurement, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Isotherm and kinetic models were used to analyze the biosorption process.

Results: The Langmuir isotherm model best described the cypermethrin biosorption process, with the maximum adsorption capacity of P. acidilactici D15 being 21.404 mg/g. The biosorption appeared to involve monolayer coverage with uniform forces. The pseudo-second-order model also fits well. The rate-controlling steps involved intraparticle diffusion, film diffusion and chemosorption. The main cellular components involved in cypermethrin biosorption were exopolysaccharides, spheroplast, and cell wall, especially peptidoglycan. The functional groups (-OH, -NH, -CH₃, -CH₂, -CH, -CONH-, -CO, and -C-O-C-) from proteins, polysaccharides, and peptidoglycan on the cell surface likely played a role in binding cypermethrin. Additionally, P. acidilactici D15 effectively reduced cypermethrin in pickle wastewater.

Conclusion: These findings suggest that P. acidilactici D15 could be a potential agent for reducing pesticide residues, laying the groundwork for treating pickle wastewater containing such pesticide residues. © 2024 Society of Chemical Industry.

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来源期刊

Journal of the Science of Food and Agriculture 工程技术-农业综合

CiteScore

8.10

自引率

4.90%

发文量

634

审稿时长

3.1 months

期刊介绍： The Journal of the Science of Food and Agriculture publishes peer-reviewed original research, reviews, mini-reviews, perspectives and spotlights in these areas, with particular emphasis on interdisciplinary studies at the agriculture/ food interface. Published for SCI by John Wiley & Sons Ltd. SCI (Society of Chemical Industry) is a unique international forum where science meets business on independent, impartial ground. Anyone can join and current Members include consumers, business people, environmentalists, industrialists, farmers, and researchers. The Society offers a chance to share information between sectors as diverse as food and agriculture, pharmaceuticals, biotechnology, materials, chemicals, environmental science and safety. As well as organising educational events, SCI awards a number of prestigious honours and scholarships each year, publishes peer-reviewed journals, and provides Members with news from their sectors in the respected magazine, Chemistry & Industry . Originally established in London in 1881 and in New York in 1894, SCI is a registered charity with Members in over 70 countries.