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Module recycling
SolarMaterial offers an industry-wide solution for value-conserving recycling of all commercial PV modules. Defective modules of all designs and sizes are recycled.


Type of fault Cause
Glass breakage Transport or installation damage, spontaneous breakage, storm, lightning strike
Defective laminate Delamination, discoloration, corrosion
Electrical faults Connection socket faults, insulation damage, bypass diode faults, hot-spots, cable or plug corrosion
Other Defective structure, frame faults, production rejects

 

Deinstallation, storage and transport

For successful value-conserving recycling, all unnecessary consequential damages resulting from incorrect module disassembly or transport must be avoided:

  • Do not bend laminates with broken
        glass panes further or shatter them!
  • Stack the modules flat!
  • Do not throw the modules into the
        container from the roof!
  • Avoid damaging the embedded cells!
  • Do not remove sockets and frames.
  •  

    The modules can be transported and stored using standard packaging.

  • Wood or cardboard cases
  • Discarded or disposable frames
  • Disposable or europallets (also in pallet
        exchange system)
  •  

    The recycling process

    Process sequence:
  • Disconnection of PV module
        components in a thermal process step


  •  
  • Disassembly of glass and frame
        parts with subsequent feedback into
        their individual recycling loops

  • Component separation after a thermal process stage

  • Isolation of solar cells

  • Isolated solar cell
  • Removal of surface coating and
        diffusion layer in subsequent
        cleaning steps



  •  
  • Silicon wafers extracted by this method
        can be reprocessed into modern solar
        cells with a high degree of utilization.
        The efficiency of these cells matches
        the efficiency of cells made of new
        wafers.

  • Recycled wafer

     

    Schematic diagram

    Recycling-Prozess Schema

     

    Positive energy balance

    The recycling solution for PV modules results in a positive balance, both from an economical and ecological point of view.

    The energy payback time for modules with recycled wafers is only 30 percent of that of new products with the same performance. The reason for this is the huge saving of the energy required to produce a new wafer.

    Further information:

    » THE REAL ENVIRONMENTAL IMPACTS OF CRYSTALLINE SILICON PV MODULES
    » LIFE CYCLE ANALYSIS OF A SOLAR MODULE RECYCLING PROCESS


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