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首页> 外文期刊>Journal of Polymers and the Environment >The Flotation by Selected Depressants as an Efficient Technique for Separation of a Mixed Acrylonitrile Butadiene Styrene, Polycarbonate and Polyoxymethyleneplastics in Waste Streams
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The Flotation by Selected Depressants as an Efficient Technique for Separation of a Mixed Acrylonitrile Butadiene Styrene, Polycarbonate and Polyoxymethyleneplastics in Waste Streams

机译：选定的抑制剂进行浮选，作为分离废水中混合的丙烯腈-丁二烯-苯乙烯，聚碳酸酯和聚甲醛塑料的有效方法

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摘要

The virgin acrylonitrile butadiene styrene(ABS), polycarbonate (PC) and polyoxy methylene(POM) available in a plastic mix were separated from each other by a flotation technique with the aid of several depressants. Also, a Design-Expert (R) statistical software was used to predict plastics flotation using input data including conditioning time, flotation tank temperature and pH and depressants concentration. It revealed that the flotation technique was effective for separation of studied plastics by selected depressants. Understanding the adsorption-desorption phenomena and effective parameters on this process was crucial to explain the activity and selectivity of a depressant on a plastic surface. The increasing conditioning time up to 15min had adverse effect on the floatability of the all studied plastics conditioned with tannic acid (TA). TA and methyl isobutyl carbinol (MIBC) had not any effect on floatability of PC and POM in all studied depressant concentrations. The flotation of ABS reached to 85% for flotation tank pH of 6.5 with 15min depressant conditioning at 35 degrees C as flotation tank temperature. A complicate phenomenon involved and predominated in flotation of studied plastics. Proposed equations by Design-Expert (R) predicted close plastic flotation values when compared with corresponding experimental values.
机译：通过浮选技术在几种抑制剂的帮助下将塑料混合物中可用的原始丙烯腈丁二烯苯乙烯（ABS），聚碳酸酯（PC）和聚甲醛（POM）彼此分离。同样，使用Design-Expert（R）统计软件，使用包括调节时间，浮选槽温度和pH值以及抑制剂浓度在内的输入数据来预测塑料的浮选。结果表明，浮选技术可有效地通过选定的抑制剂分离所研究的塑料。了解此过程中的吸附-解吸现象和有效参数对于解释塑料表面抑制剂的活性和选择性至关重要。增加长达15分钟的调理时间对使用鞣酸（TA）调理的所有研究塑料的漂浮性都有不利影响。在所有研究的抑制剂浓度下，TA和甲基异丁基甲醇（MIBC）对PC和POM的漂浮性没有任何影响。在浮选槽温度为35摄氏度的条件下，在15分钟的减压条件下，浮选槽的pH值为6.5时，ABS的浮选达到了85％。在浮选的塑料中涉及并占主导的复杂现象。与相应的实验值相比，Design-Expert（R）提出的方程式预测了接近的塑料浮选值。

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