Scientists have developed a method in which the organic acid in orange peel can be used to remove precious metals from used batteries. The new method offers an alternative to the current approach where strong acids are used to remove metals.
Scientists from Nanyang University of Technology in Singapore say that lithium-ion batteries used to manufacture new batteries precious metals extraction and to propose a more environmentally friendly model in the reuse process from fruit peel waste found a way to benefit.
Every year, 1.3 billion tons of food waste and 50 million tons of e-waste are generated on a global scale. In current methods, batteries are exposed to temperatures over 500 degrees Celsius to remove precious metals from used batteries. To remove precious metals from batteries strong acid solutions or weak acid solutions with hydrogen peroxide are used. These methods pose both security risks and dangers and hydrogen peroxide It causes by-products such as mixing into the atmosphere.
Metals in used batteries can be removed with organic acid
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Scientists, as a result of their research, citric acid, an organic acid They found that it could be used for the same process. Cobalt, lithium, nickel and manganese in used batteries, scientists who want to support their discovery with experiments 90 percentThey succeeded in removing. This suggests that the new approach can be compared with the method using hydrogen peroxide.
According to the statement made, the new approach, both food waste and A complete method to reduce electronic waste reveals that resources are kept in use for as long as possible zero waste circular economy make up. According to scientists, with the new method, precious metals in used batteries can be successfully extracted in an environmentally friendly way and minimal waste is generated during this process.