solar panel recycling

The Chinese Academy of Science has developed a new technique that uses non-toxic lemonene as a reagent to control the degree of EVA expansion during the decapsulation process of end-of-life photovoltaic modules. The proposed approach reportedly achieves the complete delamination of glass and backsheet without excessive damage to the solar cells

Solar panel waste will not be a problem because there is so little of it. However, there is a short-term problem in some places because panel deployment is growing fast and recycling is playing catch up.

Researchers in Australia have provided a series of recommendations to set up regulatory frameworks for PV module recycling and reuse. They said that, as a rule of thumb, landfill bans, tracking of the panels’ serial numbers, and a clear definition of ownership should always be included in the legislation for end-of-life solar products.

Recycling is of significant importance in a circular economy, yet some challenges have to be faced when recycling PV modules. The novel Hot Knife method to separate the crystalline silicon photovoltaic module front glass from the backsheet contributes only a few permill to the life cycle related potential environmental impacts of PV electricity.

A research group in the United States has developed a process to recover lead in its metallic form so that it can be reused in the PV industry. The process relies on a leaching solution based on a combination of acetic acid (CH3COOH) and hydrogen peroxide (H2O2), which the researchers said leaches the lead ‘in a matter of minutes.’

Engineers at the University of New South Wales (UNSW) have developed a new, more effective method to recycle end-of-life solar panels. The technique allows them to quickly and efficiently separate 99% of PV cell component materials.

A new study proposes blockchain-based solar passports to address the PV waste management challenge in India. It says such a framework would enable transparent tracking and verification of PV panels throughout their life cycle.

Scientists in China developed a novel swelling process to detach glass and EVA backsheets from solar modules at the end of their lifecycle. The technique utilizes an ester of a dicarboxylic acid known as dibasic ester. It reportedly prevents excessive cracking of solar cells.

Starting this year, ground-mounted solar modules in Germany can be replaced before the end of their service life, unlocking gigawatt-scale potential for new generation capacity without lengthy permitting processes or the need for new sites. Opinions differ as to what should happen with the decommissioned but still functioning modules, as pv magazine Deutschland’s Sandra Enkhardt reports.

Japan’s Shintora Kosan has developed a novel water jet technology to recover glass from end-of-life PV modules. It says it can pulverize the solar cells and the backsheets without damaging the glass.