Disassembly diagram of scrapped photovoltaic panel copper sheet

How to recover scrapped PV panels?

Scrapped PV panels are recovered comprehensively. Leaching efficiency of Ag is over 96% by HNO 3. The impurities in solar cells are removed efficiently. Cu strips are purified and recovered by replacement reaction. The proposed method for PV panels recycling is profitable.

How to recycle discarded PV panels?

Regarding the specific recycling process, there are three main difficulties in recycling discarded PV panels: component separation, purification of Si, and recovery of Cu strips. Firstly, in terms of component separation, the primary step is the elimination of EVA, as it binds the various layers together.

How to recycle Si-based PV panels?

In order to realize green and efficient recycling of PV panels, the recycling process includes the following stages: pretreatment, leaching of Ag, purification of Si powder, and recovery of Cu strips. The process flow diagram is presented in Fig. 1. Fig. 1. Process flow diagram of recycling Si-based PV panels.

How to remove Eva from glass based PV panel recycling?

Hence, Tokoro et al. (2021) developed an innovative selective grinding technology to liberate glass and resin attached to the glass in Si-based PV panel recycling. Additionally, chemical process is also applied to remove EVA. Trichloroethylene was used to dissolve the EVA with the enhancement of microwave ( Pang et al., 2021 ).

Should PV panels be recycled?

As current PV installations reach the final decommissioning stage, recycling and material recovery will be preferable to panel disposal. The developing PV recycling industry typically treats EOL PV panels through separate batch runs within existing general recycling plants. This allows for material recovery of considerable components.

How to recycle c-Si PV panels?

5.4.1.1. Method 1 In the recycling of c-Si PV panels there is a frame which needs to be removed before the sandwich layer-like structure is dismantled. The next step is the removal of the EVA layer to separate the glass from the Si cell (delamination). The delamination methods are split into chemical and thermal.