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Improving water quality and mitigating CH 4 and N 2 O production in urban landscape water simultaneously by optimizing calcium peroxide dosage.

التفاصيل البيبلوغرافية
العنوان: Improving water quality and mitigating CH 4 and N 2 O production in urban landscape water simultaneously by optimizing calcium peroxide dosage.
المؤلفون: Liang ZH; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China., Wang Y; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China. Electronic address: wangyi1003@xauat.edu.cn., Zhao HY; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China., Fu TT; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China., Liu YQ; Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom., Zhang K; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China., Wang YN; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China., Ouyang HL; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China., Yin JN; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China.
المصدر: The Science of the total environment [Sci Total Environ] 2024 Jun 01; Vol. 927, pp. 172270. Date of Electronic Publication: 2024 Apr 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: Methane*/analysis , Nitrous Oxide*/analysis , Water Quality* , Peroxides*/analysis, Water Pollutants, Chemical/analysis ; Greenhouse Gases/analysis
مستخلص: Recent studies show that greenhouse gas (GHG) emissions from urban landscape water are significant and cannot be overlooked, underscoring the need to develop effective strategies for mitigating GHG production from global freshwater systems. Calcium peroxide (CaO 2 ) is commonly used as an eco-friendly reagent for controlling eutrophication in water bodies, but whether CaO 2 can reduce GHG emissions remains unclear. This study investigated the effects of CaO 2 dosage on the production of methane (CH 4 ) and nitrous oxide (N 2 O) in urban landscape water under anoxic conditions during summer. The findings reveal that CaO 2 addition not only improved the physicochemical and organoleptic properties of simulated urban landscape water but also reduced N 2 O production by inhibiting the activity of denitrifying bacteria across various dosages. Moreover, CaO 2 exhibited selective effects on methanogens. Specifically, the abundance of acetoclastic methanogen Methanosaeta and methylotrophic methanogen Candidatus_Methanofastidiosum increased whereas the abundance of the hydrogenotrophic methanogen Methanoregula decreased at low, medium, and high dosages, leading to higher CH 4 production at increased CaO 2 dosage. A comprehensive multi-objective evaluation indicated that an optimal dosage of 60 g CaO 2 /m 2 achieved 41.21 % and 84.40 % reductions in CH 4 and N 2 O production, respectively, over a 50-day period compared to the control. This paper not only introduces a novel approach for controlling the production of GHGs, such as CH 4 and N 2 O, from urban landscape water but also suggests a methodology for optimizing CaO 2 dosage, providing valuable insights for its practical application.
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 © 2024. Published by Elsevier B.V.)
فهرسة مساهمة: Keywords: Active control; Calcium peroxide; Potent greenhouse gas production; Urban landscape water
المشرفين على المادة: OP0UW79H66 (Methane)
7FRO2ENO91 (calcium peroxide)
K50XQU1029 (Nitrous Oxide)
0 (Peroxides)
0 (Water Pollutants, Chemical)
0 (Greenhouse Gases)
تواريخ الأحداث: Date Created: 20240407 Date Completed: 20240424 Latest Revision: 20240425
رمز التحديث: 20240425
DOI: 10.1016/j.scitotenv.2024.172270
PMID: 38583627
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-1026
DOI:10.1016/j.scitotenv.2024.172270