在城市污水处理中,将含有克雷伯氏菌 K39 的本地微藻池作为去除大肠埃希氏菌的一种稳定而有效的生物技术策略。

IF 3.5 2区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY
Paride Salvatore Occhipinti, Nunziatina Russo, Paola Foti, Alessandra Pino, Cinzia L Randazzo, Antonino Pollio, Cinzia Caggia
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引用次数: 0

摘要

背景:近几十年来,由于人口增长、经济发展、气候变化和污染,对淡水的需求急剧增加。因此,任何废水处理策略都能在缓解淡水资源压力方面发挥作用:本研究提出了一种从人工湿地中分离出来的自生微藻池 (MP),作为城市污水处理系统二级处理的替代方案。将 MP 对大肠杆菌的去除效果与使用 Chlorella vulgaris 和 Scenedesmus quadricauda 获得的效果进行了比较。结果显示,两者的去除效果相当,2 天后,在接种了大肠杆菌的低密度样本中,四带小球藻和绿球藻诱导的大肠杆菌减少了 2.0 个单位 Log,自生大肠杆菌减少了 1.8 个单位 Log,而在接种了大肠杆菌的高密度样本中,四带小球藻、绿球藻和自生大肠杆菌分别减少了 2.8、3.4 和 2.0 个单位 Log。此外,对从 MP 中分离出的微藻菌株进行鉴定后发现,存在 Klebsormidium sp. K39、C. vulgaris、Tetradesmus obliquus 和 S. quadricauda。虽然 MP 的成分保持稳定,但在处理结束时,观察到微藻物种的分布有所不同,Klebsormidium sp:以微藻为基础的废水处理似乎是一种有价值的替代方法,尽管可以采用基于 "omics "方法的进一步研究,以更好地探索原位试验中 MP 物种组成的任何波动。© 2024 作者。食品与农业科学杂志》由约翰威利父子有限公司代表化学工业学会出版。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

An indigenous microalgal pool containing Klebsormidium sp. K39 as a stable and efficacious biotechnological strategy for Escherichia coli removal in urban wastewater treatment

An indigenous microalgal pool containing Klebsormidium sp. K39 as a stable and efficacious biotechnological strategy for Escherichia coli removal in urban wastewater treatment

An indigenous microalgal pool containing Klebsormidium sp. K39 as a stable and efficacious biotechnological strategy for Escherichia coli removal in urban wastewater treatment

An indigenous microalgal pool containing Klebsormidium sp. K39 as a stable and efficacious biotechnological strategy for Escherichia coli removal in urban wastewater treatment

An indigenous microalgal pool containing Klebsormidium sp. K39 as a stable and efficacious biotechnological strategy for Escherichia coli removal in urban wastewater treatment

BACKGROUND

In recent decades the demand for freshwater has drastically increased as a consequence of population growth, economic development, climate change and pollution. Therefore, any strategy for wastewater treatment can play a role in alleviating the pressure on freshwater sources.

RESULTS

In the present study an autochthonous microalgal pool (MP), isolated from a constructed wetland, was proposed as an alternative to the secondary treatment of an urban wastewater treatment system. The MP removal efficacy was compared to those obtained using Chlorella vulgaris and Scenedesmus quadricauda, against E. coli. Results exhibited a comparable removal efficacy and after 2 days, in samples inoculated with E. coli at lower density, S. quadricauda and C. vulgaris induced a decrease of 2.0 units Log and the autochthonous MP of 1.8 units Log, whereas in samples with E. coli at higher density the bacteria were reduced 2.8, 3.4 and 2.0 units Log by S. quadricauda, C. vulgaris and the autochthonous MP, respectively. Moreover, the identification of microalgal strains isolated from the MP revealed the presence of Klebsormidium sp. K39, C. vulgaris, Tetradesmus obliquus and S. quadricauda. Although the MP composition remained quite constant, at the end of the treatment, a different distribution among the microalgal species was observed with Klebsormidium sp. K39 found as dominant.

CONCLUSION

The microalgal-based wastewater treatment appears as a valuable alternative, although further investigations, based on ‘omics’ approaches, could be applied to better explore any fluctuation within the MP species composition in an in situ trial. © 2024 The Author(s). Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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来源期刊
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.
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