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首页> 外文期刊>Journal of Polymers and the Environment >Amino-Acid-Modified-Cashew Gum Flocculant: Synthesis, Characterization, and Application
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Amino-Acid-Modified-Cashew Gum Flocculant: Synthesis, Characterization, and Application

机译：氨基酸改性腰果胶絮凝剂的合成，表征及应用

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摘要

Amphoteric poly(O-methacryloyl-l-serine)-grafted cashew gum (CG-g-P(SerMA)) flocculant was obtained with highly efficient in separation and sequential recovery of kaolin particles from aqueous suspension. The highest flocculation efficiency was achieved with a flocculant synthesized using an O-methacryloyl-l-serine:cashew gum molar ratio of 3:1. The CG-g-P(SerMA) at a dosage of 3.0mg L-1 resulted in a flocculation efficiency of more than 90% within 20min for kaolin suspension. The efficiency, in standard experiments, the flocculant CG-g-P(SerMA) was superior to cashew gum and polyacrylamide-based commercial flocculants. The flocculation mechanism involves electrostatic interactions between the negatively charged surface of the kaolin and the protonated amino groups of the flocculant under acidic conditions. These results provide new opportunities and challenges for understanding and improving the removal of impurities present in water and wastewater.
机译：获得了两性聚（O-甲基丙烯酰基-1-丝氨酸）接枝腰果胶（CG-g-P（SerMA））絮凝剂，该絮凝剂可以高效地从水性悬浮液中分离和依次回收高岭土颗粒。使用以3：1的O-甲基丙烯酰基-1-丝氨酸：腰果胶摩尔比合成的絮凝剂可获得最高的絮凝效率。 CG-g-P（SerMA）的剂量为3.0mg L-1，导致20分钟内高岭土悬浮液的絮凝效率超过90％。在标准实验中，絮凝剂CG-g-P（SerMA）的效率优于腰果胶和聚丙烯酰胺基商业絮凝剂。絮凝机理涉及在酸性条件下高岭土带负电的表面与絮凝剂质子化氨基之间的静电相互作用。这些结果为理解和改善水和废水中杂质的去除提供了新的机遇和挑战。

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