Life Cycle Assessment to Support Waste Management Strategies in a Circular Economy Context

2021 ◽  
pp. 1-28
Author(s):  
Lineker Max Goulart Coelho ◽  
Rafaella de Souza Henriques
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Circular Economy ◽  
Management Strategies

scholarly journals Using Life Cycle Assessment and Circular Economy Principles to Address Nutrient Depletion in Tanzanian Sisal Fibre Production

2021 ◽  
Author(s):  
Tracey Anne Colley ◽  
Judith Valerian ◽  
Michael Zwicky Hauschild ◽  
Stig Irving Olsen ◽  
Morten Birkved
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Marine Fish ◽  
Circular Economy ◽  
Nutrient Depletion ◽  
Fish Processing ◽  
Processing Waste ◽  
Sisal Fibre ◽  
Beneficial Use

Nutrient depletion in Tanzanian sisal production has led to yield decreases over time. We use nutrient mass balances embedded within a life cycle assessment to quantify the extent of nutrient depletion for different production systems, then used circular economy principles to identify potential cosubstrates from within the Tanzanian economy to anaerobically digest with sisal wastes. The biogas produced is then used to generate bioelectricity and the digestate residual can be used as a fertilizer to address the nutrient depletion. If no current beneficial use of the cosubstrate was assumed, then beef manure and marine fish processing waste were the best cosubstrates. If agricultural wastes were assumed to have a current beneficial use as fertilizer, then marine fish processing waste and human urine were the best cosubstrates. The largest reduction in environmental impacts resulted from bioelectricity replacing electricity from fossil fuels in the national electricity grid and improved onsite waste management practices. There is significant potential to revitalize Tanzanian sisal production by applying circular economy principles to sisal waste management and bioenergy production.

Life cycle assessment (LCA) of waste management strategies: Landfilling, sorting plant and incineration

Energy ◽  
2009 ◽  
Vol 34 (12) ◽  
pp. 2116-2123 ◽  
Author(s):  
Francesco Cherubini ◽  
Silvia Bargigli ◽  
Sergio Ulgiati
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Management Strategies

scholarly journals Addressing Nutrient Depletion in Tanzanian Sisal Fiber Production Using Life Cycle Assessment and Circular Economy Principles, with Bioenergy Co-Production

2021 ◽  
Vol 13 (16) ◽  
pp. 8881
Author(s):  
Tracey Anne Colley ◽  
Judith Valerian ◽  
Michael Zwicky Hauschild ◽  
Stig Irving Olsen ◽  
Morten Birkved
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Marine Fish ◽  
Circular Economy ◽  
Sisal Fiber ◽  
Nutrient Depletion ◽  
Fish Processing ◽  
Processing Waste ◽  
Beneficial Use

Nutrient depletion in Tanzanian sisal production has led to yield decreases over time. We use nutrient mass balances embedded within a life cycle assessment to quantify the extent of nutrient depletion for different production systems, and then used circular economy principles to identify potential cosubstrates from within the Tanzanian economy to anaerobically digest with sisal wastes. The biogas produced was then used to generate bioelectricity and the digestate residual can be used as a fertilizer to address the nutrient depletion. Life cycle assessment was used in a gate-to-gate assessment of the anaerobic digestion options with different cosubstrates. If no current beneficial use of the cosubstrate was assumed, then beef manure and marine fish processing waste were the best cosubstrates. If agricultural wastes were assumed to have a current beneficial use as fertilizer, then marine fish processing waste and human urine were the best cosubstrates. The largest reduction in environmental impacts resulted from bioelectricity replacing electricity from fossil fuels in the national electricity grid and improved onsite waste management practices. There is significant potential to revitalize Tanzanian sisal production by applying circular economy principles to sisal waste management to address soil nutrient depletion and co-produce bioenergy.

scholarly journals Improving Municipal Solid Waste Management Strategies of Montréal (Canada) Using Life Cycle Assessment and Optimization of Technology Options

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5701
Author(s):  
Tahereh Malmir ◽  
Saeed Ranjbar ◽  
Ursula Eicker
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Management System ◽  
Organic Waste ◽  
Solid Waste Management ◽  
Management Strategies ◽  
Municipal Solid Waste Management ◽  
Total Energy Consumption ◽  
Waste Management System

Landfilling of organic waste is still the predominant waste management method in Canada. Data collection and analysis of the waste were done for the case study city of Montréal in Canada. A life cycle assessment was carried out for the current and proposed waste management system using the IWM-2 software. Using life cycle assessment results, a non-dominated sorting genetic algorithm was used to optimize the waste flows. The optimization showed that the current recovery ratio of organic waste of 23% in 2017 could be increased to 100% recovery of food waste. Also, recycling could be doubled, and landfilling halved. The objective functions were minimizing the total energy consumption and CO2eq emissions as well as the total cost in the waste management system. By using a three-objective optimization algorithm, the optimized waste flow for Montréal results in 2% of waste (14.7 kt) to anaerobic digestion (AD), 7% (66.3 kt) to compost, 32% (295 kt) to recycling, 1% (8.5 kt) to incineration, and 58% (543 kt) to landfill.

scholarly journals Life Cycle Assessment of Municipal Solid Wastes: Development of Wasted Software

2021 ◽  
Author(s):  
Rodrigo Diaz
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Waste Management ◽  
Solid Waste Management ◽  
Management Strategies ◽  
Software Tool ◽  
Municipal Solid Wastes ◽  
Material Recycling ◽  
Management Plans ◽  
Computer Based

This thesis introduces WASTED (Waste Analysis Software Tool for Enironmental Decisions). It is a computer-based model that uses life-cycle assessment (LCA) methodology to estimate material flows and environmental impacts of solid waste management. The model consists of a number of separate submodels that describe a typical waste management process. These models are combined to represent a complete waste management system. Based on LCA methodologies, WASTED uses compensatory systems in order to account for the avoided impacts derived from energy recovery and material recycling. In this manner, a comprehensive "cradle-to-grave" analysis of waste management is possible. The purpose of this project is to provide waste managers, environmental researchers and decision makers with a tool that helps them to evaluate waste management plans and to improve the environmental performance of waste management strategies.

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