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A clean and efficient flotation towards recovery of hazardous polyvinyl chloride and polycarbonate microplastics through selective aluminum coating: Process, mechanism, and optimization
Journal of Environmental Management2021
22 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 35
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Hui Wang,
Hongru Jiang,
Hongru Jiang,
Chongqing Wang
Chongqing Wang
Hongru Jiang,
Hongru Jiang,
Chongqing Wang
Hongru Jiang,
Hui Wang,
Hongru Jiang,
Hongru Jiang,
Hongru Jiang,
Chongqing Wang
Chongqing Wang
Hongru Jiang,
Hongru Jiang,
Hongru Jiang,
Hongru Jiang,
Hongru Jiang,
Hongru Jiang,
Chongqing Wang
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Yingshuang Zhang,
Hui Wang,
Hongru Jiang,
Chongqing Wang
Chongqing Wang
Hui Wang,
Hui Wang,
Hui Wang,
Yingshuang Zhang,
Hui Wang,
Hongru Jiang,
Hui Wang,
Chongqing Wang
Yingshuang Zhang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Yingshuang Zhang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Chongqing Wang
Hui Wang,
Yingshuang Zhang,
Hui Wang,
Chongqing Wang
Chongqing Wang
Chongqing Wang
Hui Wang,
Chongqing Wang
Hui Wang,
Hongru Jiang,
Yingshuang Zhang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Chongqing Wang
Chongqing Wang
Chongqing Wang
Chongqing Wang
Chongqing Wang
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Chongqing Wang
Hongru Jiang,
Hui Wang,
Chongqing Wang
Chongqing Wang
Hongru Jiang,
Chongqing Wang
Chongqing Wang
Chongqing Wang
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Hui Wang,
Chongqing Wang
Hui Wang,
Hui Wang,
Hui Wang,
Hongru Jiang,
Chongqing Wang
Hongru Jiang,
Chongqing Wang
Hongru Jiang,
Yingshuang Zhang,
Chongqing Wang
Chongqing Wang
Chongqing Wang
Hui Wang,
Chongqing Wang
Hongru Jiang,
Chongqing Wang
Chongqing Wang
Summary
Polyvinyl chloride (PVC) and polycarbonate (PC) microplastics are hazardous due to their chemical content but are difficult to separate for recycling. Researchers developed a flotation method using aluminum coating that cleanly separates these two plastic types.
Polyvinyl chloride (PVC) and polycarbonate (PC) microplastics are major sources of hazardous chlorine and bisphenol A, threatening the ecosystem and environment. Plastic recycling can control the source of microplastics pollution, but the recycling of PVC and PC will be prevented by invalid separation. We established a novel and clean flotation method to separate PVC and PC microplastics by using aluminum coating. Trace amounts of Al(OH) can selectively coat the PVC microplastics surface due to its strong affinity for PVC. The contact angle of PVC decreases by 24° due to abundant hydroxyl groups of Al(OH) coating, whereas PC remained hydrophobic. Response surface methodology (RSM) combining Box-Behnken design (BBD) is used to optimize modification. A quadratic model is established to predict PC purity, explore the interaction between pH, aluminum chloride concentration, and ultrasonic duration. The recovery and purity of microplastics can exceed 99.65% with parameter optimization. The effects of multi-component, brand, shape, size, and mass ratio of plastics are utilized to evaluate the application potential. The suitable situations and limits of this method are disclosed. The aluminum coating offers significant benefits over other modifications in terms of reaction temperature, treatment time, and pollution prevention. Flotation based on aluminum coating provides a new insight for separating and recycling microplastics.