Wind turbine blade end-of-life options: An eco-audit comparison

Abstract

Wind energy has developed rapidly over the last two decades to become one of the most promising economical and green sources of renewable energy, responding to concerns about use of fossil fuels and increasing demand for energy. However, attention is now turning to what happens to end-of-life wind turbine waste, and there is scrutiny of its environmental impact. In this study, we focus on one aspect of this, the blades. We analyse and compare end-of-life options for wind turbine blade materials (mainly glass fibre reinforced plastic and carbon fibre reinforced plastic) in terms of environmental impact (focusing on energy consumption), using our own data together with results gathered from the literature. The environmental impacts of each end-of-life option are discussed, looking at processing energy consumption, the recycling benefits and the effect of blade technology development trends. There is considerable variability in the results, and lack of consensus on predictions for the future. We therefore analyse the results using a range of different scenarios to show how the 'optimal' solutions are influenced by trends in blade composition and end-of-life process development. The most environmentally favourable process is dependent on whether the materials used for the blades are glass fibre composite or carbon fibre composite. The extent to which process improvement might affect the viability of different end-of-life processes has been assessed by looking at 'crossover' points for when the environmental impact becomes favourable. This analysis gives new insight into areas where research into process technologies could be targeted to enable significant end-of-life environmental benefits.

A Sustainable Approach to the Low-Cost Recycling of Waste Glass Fibres Composites towards Circular Economy

“…Due to the high strength and stiffness of fibre reinforced polymers (FRPs), they are widely used in a growing number of fields including automotive, aircraft, aerospace, wind turbines, and civil infrastructure [1][2][3][4][5]. The net global glass fibre (GF) market is expected to reach USD 12 billion by 2025, according to a 2019 Global Market Insights, Inc. report.…”

A Strategic Study on the Environmental Impacts of Wind Turbine Blade Materials, their Improvements, Economics and End-Life-Options

“…A comparison for options regarding end-of-life for WT blade materials (specifically Glass Fibre Reinforced Plastic and Carbon Fibre-reinforced plastic), with respect to environmental impact, energy consumption and the benefits of recycling and the trends progressing for development in blade technology. The options available, rather achievable rely over material of the blade; generally are composites of glass and carbon fibre (Liu et al, 2019). The blade and other WT components are now enforced towards greener practices of composite waste treatment instead of incinerating or landfill.…”

Sustainable Development Assessment of Zinc Oxide Production focused on Agribusiness

“…Finally, Liu et al (2019) compared different windturbine end-of-life options by using the Ecoaudit tool. This is because more concern is dedicated now to end-of-life turbine waste.…”

“…What was once apparently infinite has reached a critical point. Therefore, many authors (Djassemi, 2011;Javaid et al, 2015;Comitê, 2016;Koronis and Silva, 2018;Hamid and Lim, 2019;Liu et al, 2019) have studied the environmental impacts of different processes trying to restore part of our natural resources. People from different countries have been claiming for public policies to preserve natural resources.…”