Since the emergence of life cycle assessment (LCA), many studies have focused on the integration of uncertainties. Nevertheless, data quality assessment and statistical approaches are not yet widely used to quantify uncertainty, and when used, methodologies are neither uniform nor rigorous. Moreover, the data required to propagate and estimate the overall uncertainty are often lacking. Finally, the quantification of uncertainty could introduce more confusion in decision-making. In this context, we propose joint implementation of both the qualitative and quantitative approaches to estimate uncertainties when performing LCA of complex systems. Using an existing LCA on grocery bags, this study first attempts to demonstrate the usefulness of both the qualitative and quantitative approaches to deal with uncertainty. Secondly, given that data collection is very time-consuming, the usefulness of both the qualitative and quantitative approaches will be discussed.
- Inderscience Publishers
- Qualitative and quantitative approaches dealing with uncertainty ...
Environmental impacts of ocean-energy systems: a life-cycle assessment
Ocean-energy technologies — which harvest renewable energy from the sea — will have a significant role to play in a future low-carbon society. A recent life-cycle analysis of different ocean-energy devices has found that life-cycle environmental impacts are caused mainly by the materials used in the mooring, foundations and structures. Improving the efficiency and lifespan of the devices, as well as improving mooring and foundations and deploying devices further out at sea, will help to further reduce...
Environmental impact of recycling metals from ships: a life cycle assessment
New research has examined three different categories of Ecological Risk Assessment (ERA), each with different goals. The researchers find that overlaps between the three assessments could be combined to create a more comprehensive form of ERA, usable by regulators and environmental decision makers. Life cycle assessment (LCA) can measure the environmental impact of the different stages of a ship’s life cycle, from design to dismantling. This assessment focused on the impact of recycling the metal parts of a...
Exploring reach as potential data source for characterizing ecotoxicity in life cycle assessment
Toxicity models in life cycle impact assessment (LCIA) currently only characterize a small fraction of marketed substances. This is mainly due to limitations in the underlying ecotoxicity data. One approach to improve the current data situation in LCIA is to explore new data sources, such as the European database of the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH). The authors explored REACH as potential data source for LCIA based on matching reported ecotoxicity data for substances...
Life Cycle Analysis of Water Networks
AbstractWater authorities around the world are faced with the problem of ageing distribution networks and often only limited historical data on which to base a sound long term, cost efficient replacement policy. The LICAN approach to whole of life costing is introduced and a hypothetical case study is used to demonstrate the importance of such an approach. A selection of pipe networks utilizing different pipe materials (PVC, DI and PE) are modeled to determine their whole of life cost, taking into account installat...
Life cycle assessment comparison of photocatalytic coating and air purifier
This paper presents a comparison of two very different options for removal of undesirable microorganisms and airborne pollutants from the indoor environment of hospitals, schools, homes and other enclosed spaces using air purifiers and photocatalytic coatings based on nano titanium dioxide (TiO2). Both products were assessed by Life Cycle Assessment (LCA) methodology from cradle to grave. The assessment also includes comparison of two different nano TiO2 production technologies, one by continuous hydrothermal...