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Study on the Antagonistic Potential of Biosynthesized Hematite Nanoparticles During Water and Wastewater Treatment

机译：生物合成赤铁矿纳米粒细胞拮抗潜力在水和废水处理过程中的研究

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摘要

Microbial pollution of water is one of the hazardous factors that threaten public health and the surrounding ecosystem. Therefore, the development of environmentally benign nanoparticles with exceptional properties has increased the drive toward improvement of water/wastewater disinfection. Accordingly, we aim to address the antagonistic effect of biogenic hematite nanoparticles (HNPs) against a broad spectrum of microorganisms and in water/wastewater disinfection systems. The minimum inhibitory concentration of HNPs at a range of 0.075-9.6 mgmL(-1) is examined. The results demonstrate that Gram-positive bacteria are more susceptible to HNPs than Gram-negative ones. In addition, the growth of Candida albicans and Aspergillus brasiliensis is inhibited by applying 1.2 mgmL(-1) of HNPs, which indicates antifungal activity. Moreover, HNPs (0.3mgmL(-1)) inhibits 58.7, 50.5, and 86.3% of the growth of Staphylococcus aureus, Pseudomonas aeruginosa biofilms, and Chlorella vulgaris, respectively. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) of untreated and HNPs-treated cells of Escherichia coli, Staphylococcus aureus, Clostridium perfringens, Candida albicans, and Chlorella vulgaris are studied, and the ultrastructure micrographs show ultrastructure deformities caused by HNPs. Remarkable disinfection strength reaches up to 99.8%, mainly with increasing dose and contact time. The current study highlights the efficiency of HNPs as a biocide, which could contribute to water/wastewater treatment as an alternative for chlorine.
机译：微生物污染水是威胁公共卫生和周围生态系统的危险因素之一。因此，具有特殊性质的环境良性纳米颗粒的发展增加了对水/废水消毒的改善的驱动。因此，我们的目的是解决生物原赤铁矿纳米粒子（HNP）对广谱微生物和水/废水消毒系统的拮抗作用。检查了0.075-9.6mml（-1）范围内的HNP的最小抑制浓度。结果表明，革兰氏阳性细菌比革兰氏阴性腺更容易受到HNPS的影响。此外，通过施加1.2mgml（-1）的HNPS，抑制念珠菌蛋白和曲霉属Brasiliensis的生长，这表明抗真菌活性。此外，HNPS（0.3mgml（-1））抑制了58.7,50.5和86.3％的葡萄球菌，假单胞菌铜绿素，铜绿假单胞菌和胡萝卜拉的生长。研究了透射电子显微镜（TEM）和扫描电子显微镜（SEM）的未处理和HNPS处理的细胞，葡萄球菌，葡萄球菌，蛋白质流量，念珠菌，Cantida albicans和Collarla Valarla valgaris，并且超微结构显微照片显示由HNP引起的超微结构畸形。显着的消毒强度达到高达99.8％，主要是随着剂量和接触时间的增加。目前的研究突出了HNP作为杀生物剂的效率，这可能导致水/废水处理作为氯的替代品。

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  • 来源
    《Clean》 |2019年第6期|1800418.1-1800418.10|共10页
  • 作者

    Eltarahony Marwa; Zaki Sahar; Kheiralla Zeinab; Abd-El-Haleem Desouky;

  • 作者单位

    City Sci Res & Technol Applicat Genet Engn & Biotechnol Res Inst Environm Biotechnol Dept Alexandria Egypt;

    City Sci Res & Technol Applicat Genet Engn & Biotechnol Res Inst Environm Biotechnol Dept Alexandria Egypt;

    Ain Shams Univ Coll Women Arts Sci & Educ Cairo Egypt;

    City Sci Res & Technol Applicat Genet Engn & Biotechnol Res Inst Environm Biotechnol Dept Alexandria Egypt;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    biocides; disinfection; iron nanoparticles; water-borne pathogens;

    机译：杀生物剂;消毒;铁纳米粒子;水性病原体;

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