An Innovative Method for the Extraction of Metal from Waste Cathode Ray Tubes through a Mechanochemical Process Using 2-[Bis(carboxymethyl)amino]acetic Acid Chelating Reagent
作者： Narendra Singh , Jinhui Li , Xianlai Zeng
DOI: 10.1021/ACSSUSCHEMENG.6B00875
关键词:
摘要: To minimize electronic waste and reduce the environmental impact of hazardous metals, a new greener approach has been developed for extraction lead barium metals from cathode ray tube (CRT) glass. The process steps comprise an initial mechanical activation CRT funnel glass then wet ball milling powder using metal chelate reagent 2-[bis(carboxymethyl)amino]acetic acid (NTA) water at room temperature. After mechanochemical treatment, desired ≳99 mass % contained in was extracted as metal–NTA species pure nonleaded SiO2 material matrix. separation accelerated by ball-milling atomization high stability constant species. separation, maximal amounts ions (∼99 %) were obtained PbSO4 BaSO4, respectively, with addition ferric sulfate. Notably, method does not require heat doe...
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