Impact of urbanism on source separation systems: A life cycle assessment.

Sci Total Environ

TBI, Université de Toulouse, CNRS, INRAE, INSA, 135 avenue de Rangueil, 31077 Toulouse CEDEX 04, France.

Published: April 2024


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

This study aims to assess the effect of different urban configuration regarding the choice of wastewater management of the district with source separation systems. Understanding this link can guide researchers, and also urban actors, in order to choose the best source separation solution to implement in a specific urban configuration. For this purpose, an integrated modelling approach was used to model the district with different types of urban planning, the water resources recovery facility (WRRF) and create a life cycle inventory to carry out a life cycle assessment (LCA). Six different urban configurations were tested with three different source separation scenarios and compared with an advanced WRRF with high level of nutrients and organic matter recovery. This study concludes that urine source separation is beneficial compared to advanced WWRF for all the urban configurations. Sewer construction was identified as the main contributor to environmental impact for the low-density configuration (pavilions), limiting the benefits of source separation in this urban settlement. Blackwater separation with a decentralised treatment is only beneficial for high densely populated area. Treatment of blackwater and greywater for reuse, has greater impact than reference scenario, in all urban configurations, due to high energy consumption for greywater treatment. Future research should therefore explore technical solutions for limiting the energy consumption.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.scitotenv.2024.171050DOI Listing

Publication Analysis

Top Keywords

source separation
24
life cycle
12
urban configurations
12
separation systems
8
cycle assessment
8
urban
8
urban configuration
8
compared advanced
8
energy consumption
8
separation
7

Similar Publications

Synchrotron light sources are powerful platforms for cutting-edge, multidisciplinary research, with dozens currently in operation, construction or commissioning worldwide. It is widely recognized that different research areas have specific demands for source capabilities. For the majority of synchrotron facilities, delivering high-brightness, high-flux synchrotron radiation stably through high-current electron beams is the primary mode of operation.

View Article and Find Full Text PDF

Background: Certain scientific publications suggest that medications with high protein binding, such as phenytoin, have lower-than-expected serum levels in patients receiving enteral nutrition (EN) preparations or nutritional supplements. Valproic acid (VPA) is highly protein bound but currently no interactions with EN that would reduce serum levels have been documented.

Case Description: A 69-year-old patient receiving enteral VPA oral solution via a nasojejunal tube experienced a clinically significant decrease in serum concentration when EN was initiated.

View Article and Find Full Text PDF

Development and characterization of a prototype selenium-75 high dose rate brachytherapy source.

Med Phys

September 2025

Medical Physics Unit, Department of Oncology, Faculty of Medicine, McGill University, Montréal, Québec, Canada.

Background: Se ( 120 days, 215 keV) offers advantages over Ir ( 74 days, 360 keV) as a high dose rate brachytherapy source due to its lower gamma energy and longer half-life. Despite its widespread use in industrial gamma radiography, a Se brachytherapy source has yet to be manufactured.

Purpose: A novel Se-based source design with a vanadium diselenide core, titled the SeCure source, was proposed.

View Article and Find Full Text PDF

Total laryngectomy (TLE) results in the permanent separation of the respiratory and digestive tracts, requiring all airway interventions to occur exclusively via a neck stoma. Although airway obstruction in post-laryngectomy patients is uncommon, it can rapidly become fatal without prompt recognition and understanding of the altered anatomy. Here, we report the case of a patient with a recent TLE for squamous cell carcinoma, who presented to a rural Emergency Department (ED) in acute respiratory distress.

View Article and Find Full Text PDF

Low-carbon competitiveness of cities in solid waste disposal systems: Spatial and temporal variations in greenhouse gas emissions in the Yangtze River Delta.

Waste Manag

September 2025

Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; China Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address:

As one of the major sources of greenhouse gas (GHG) emissions, the municipal solid waste (MSW) management system was regarded as a key contributor to the construction of a low-carbon society. Understanding the evolution of waste treatment facilities and the corresponding GHG emissions was essential for assessing the low-carbon competitiveness of local communities. In this study, facility-level data were used to estimate GHG emissions from the waste management system in the Yangtze River Delta (YRD) and analyze their temporal and spatial variations.

View Article and Find Full Text PDF