估计瑞典城市废水系统中化学品和微塑料的化石碳贡献:基于模型的方法
Efstathios Reppas-Chrysovitsinos1, Magdalena Svanström1, Gregory Peters1
1Division of Environmental Systems Analysis, Department of Technology Management and Economics, Chalmers University of Technology, Gothenburg, SE412 96, Sweden.
Heliyon
|September 26, 2024
概括
废水处理厂 (WWTP) 的化石碳排放量很大,占总碳排放量的12-17% . 微塑料和有机化学品是导致这种流入的关键因素,因此需要将它们纳入气候评估中.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 废水管理 废水管理
背景情况:
- 废水处理厂 (WWTP) 的温室气体排放评估越来越需要将化石碳纳入其中.
- 2019年政府间气候变化专门委员会 (IPCC) 准则修订强调了这一必要性,并得到了越来越多的实验证据的支持.
- 了解化石碳流对于准确评估城市水系统对气候影响至关重要.
研究的目的:
- 开发和应用基于模型的方法来估计瑞典城市废水系统内的化石碳流.
- 量化化石碳对WWTP总体碳排放的贡献.
- 确定进入水污染工厂的化石碳的主要来源,特别是微塑料和有机化学品.
主要方法:
- 利用基于模型的方法来估计化石碳流.
- 采用了瑞典城市废水系统中化学和聚合物材料流量的数据.
- 分析了化石碳流入的组成,区分了微塑料和有机化学物质.
主要成果:
- 化石碳约占瑞典下水道系统总碳排放量的12-17%左右.
- 这一发现与实验数据一致,这些实验数据显示化石碳对WWTP影响的贡献在4%至28%之间.
- 微塑料约占化石碳流入的13%,而有机化学品贡献了剩余的83%.
结论:
- 化石碳是城市废水系统碳排放的重要组成部分.
- 该研究量化了微塑料和有机化学品作为WWTP化石碳来源的重要作用.
- 准确的温室气体评估必须考虑化石碳,包括微塑料和化学品的贡献.
更多相关视频
相关概念视频
Mechanistic Models: Compartment Models in Individual and Population Analysis
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least squares (OLS)...
Freshwater Microbial Ecology
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic systems...
Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...


