دورية أكاديمية
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Plants release, pathogens decease: Plants with documented antimicrobial activity are associated with Campylobacter and faecal indicator attenuation in stormwater biofilters.

التفاصيل البيبلوغرافية
العنوان: Plants release, pathogens decease: Plants with documented antimicrobial activity are associated with Campylobacter and faecal indicator attenuation in stormwater biofilters.
المؤلفون: Galbraith P; Department of Civil Engineering, Monash University, Wellington Road, Clayton, Victoria 3800, Australia; CSIRO Agriculture and Food, Building 10, 39 Kessels Rd, Coopers Plains, Queensland 4108, Australia., Henry R; Department of Civil Engineering, Monash University, Wellington Road, Clayton, Victoria 3800, Australia., McCarthy DT; School of Civil and Environmental Engineering, Queensland University of Technology, 2 George St, Brisbane City, Queensland 4000, Australia. Electronic address: david.mccarthy@qut.edu.au.
المصدر: The Science of the total environment [Sci Total Environ] 2024 Jan 01; Vol. 906, pp. 167474. Date of Electronic Publication: 2023 Oct 05.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Amsterdam, Elsevier.
مواضيع طبية MeSH: Water Purification* , Campylobacter*, Escherichia coli ; Filtration ; Rain ; Australia
مستخلص: Stormwater biofilters demonstrate promising treatment of faecal microorganisms, however performance can vary with design and operational conditions. This study investigated whether plants with significant documented antimicrobial activity could improve faecal bacterial treatment within biofilters. Laboratory-scale biofilters (n = 30) were dosed with synthetic stormwater containing faecal bacteria Escherichia coli, Enterococcus faecalis and Campylobacter jejuni under south-eastern Australian climatic conditions. Systems vegetated with Melaleuca species, renowned for their in vitro antimicrobial activity, consistently enhanced removal of all tested culturable bacteria in total outflow and submerged zone water relative to other plant configurations. Within just 1-2 days of stormwater dosing, M. linariifolia submerged zones demonstrated significantly reduced bacterial concentrations compared to C. appressa (p = 0.023 and <0.001 for C. jejuni and E. coli, respectively), removing ∼1.47 log 10 MPN/100 mL E. coli, ∼1.14 log 10 MPN/100 mL E. faecalis and ∼0.81 log 10 MPN/L C. jejuni from inflow. These trends continued even after all but one M. linariifolia replicate perished during an extended drying period (p = 0.002 and 0.003 for C. jejuni and E. coli, respectively). Through a systematic process of elimination, these observations were attributed to enhanced bacterial attenuation with elevated plant inhibitory activity. Cumulative biofilter age reinforced plant-mediated bacterial treatment (p = 0.023 for E. faecalis), ostensibly due to increased plant size/growth and net biological activity. Notably, E. coli and E. faecalis attenuation improved with prolonged antecedent drying length (14 vs. 4 days; p < 0.0001 for both), while the converse was observed for C. jejuni (not significant). This study addresses significant knowledge gaps around plant-mediated faecal microbe treatment within biofilters, providing key direction for real-world system design to optimise stormwater pathogen treatment.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)
فهرسة مساهمة: Keywords: Antimicrobial; Biofilter; Campylobacter; Fecal microorganisms; Urban stormwater; Vegetation
تواريخ الأحداث: Date Created: 20231007 Date Completed: 20231115 Latest Revision: 20231115
رمز التحديث: 20231115
DOI: 10.1016/j.scitotenv.2023.167474
PMID: 37804974
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-1026
DOI:10.1016/j.scitotenv.2023.167474