Solar battery recovery or causing severe pollution

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

According to the Data of the German Federal Bureau of Statistics, 5.8% of German total power generation comes from photovoltaic power supported by the state. However, this part of the energy transition plan is not good choice, because studies have pointed out that there is a contaminant substance such as lead and cadmium in solar cells.

Researchers at the University of Stuttgart, Germany are studying that these environmentally harmful things are released from the photovoltaic assembly. They want to find ways to slow down and even prevent harmfulness. This project jointly participated by the German Photovoltaic Research Institute (IPV) and residential area water conservancy projects, Water Quality and Waste Treatment Research Institute (ISWA), received funding by the German Federal Economic Department over 800,000 euros.

The heavy metals containing solar components are important to lead and cadmium. Lead is stored in solder, and cadmium is used in the form of cadmium telluride to produce specific thin film solar cells. In addition to the damage to the soil, the exhaust gas can also be discharged into the air into lead dust.

The human body is important by eating such as green leafy vegetables and drinking water to lead. In vivo, lead will impair nervous system and reproductive function. Some lead compounds and even carcinogenesis.

Metal cadmium is important for protective coating, a small amount for alloy, battery and as a stabilizer. The human body is abnormal on cadmium. The disturbance of the kidney function is a symbol of cadmium poisoning.

The EU "Electronic Machine Equipment Hazard Limit Directive" specifies the maximum content of lead and cadmium in photovoltaic components, lead is 0.1% of total weight, and the harm of greater cadmium is 0.01%.

Of course, the photovoltaic device is not included in this directive. In a report, Stuttgart's researchers said that the pollutant substance released from the damaged components through the acidic solution. And solar cells have to mill mills to form powder.

But ISWA's Michaelkoch emphasizes that it is only worst about here. "The intact photovoltaic module is not in danger even if it is used. "In addition, there is a certain risk in the processing of components.

Baden-W¨¹rttemberg is fundamentally not allowed photovoltaic components to landfill. After some special circumstances such as fire, the photovoltaic assembly enters the landfill, and the rinsing may increase the harm. Therefore, special landfills are specially filled with fire waste.

According to the University of Stuttgart, the global installation assembly exceeds 17 million tons. The term is now expected to be 20 to 25 years. Although the manufacturer has a regenerative process.

IPV Chairman J¨¹rgenWerner warned that non-professional processing of damage and low efficiency components may cause harm, such as components, will be discarded after the development of our country will be discarded to unregulated landfill.

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