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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and Characterization of Acrylamide-Based Aluminum Flocculant for Turbidity Reduction in Wastewater
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Synthesis and Characterization of Acrylamide-Based Aluminum Flocculant for Turbidity Reduction in Wastewater

机译：降低废水浊度的丙烯酰胺基铝絮凝剂的合成与表征

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摘要

Polymeric flocculants of aluminum hydroxide-poly[acrylamide-co-(acrylic acid)], AHAMAA, were prepared by solution polymerization using aluminum hydroxide as a coagulant in the presence of acrylamide (AM) and acrylic acid (AA) as a comonomer pair with N,N'-methylenebisacrylamide as a crosslinking agent. The crosslinking was initiated by ammonium persulfate with N,N,N',N'-tetramethylethylenediamine as an initiator. The water absorbency of crosslinked poly[AM-co-AA] was always higher than that of AHAMAA and was found to be correlated to the storage modulus of the polymers, which was higher for AHAMAA than that of crosslinked poly[AM-co-AA]. The residual aluminum concentration of AHAMAA (0.09-0.2 mg L-1) indicated the stability of the polymer flocculant which was in good agreement with the observed tan delta and the higher G '' and G' values. Both the crosslinked poly[AM-co-AA] and AHAMAA satisfactorily reduced the turbidity of kaolin suspensions, but the latter gave a better reduction performance.
机译：在丙烯酰胺（AM）和丙烯酸（AA）为共聚单体对的情况下，以氢氧化铝为凝聚剂，通过溶液聚合制备氢氧化铝-聚[丙烯酰胺-共-（丙烯酸）]的高分子絮凝剂AHAMAA。 N，N′-亚甲基双丙烯酰胺作为交联剂。用N，N，N′，N′-四甲基乙二胺为引发剂的过硫酸铵引发交联。交联聚[AM-co-AA]的吸水率始终高于AHAMAA，并发现与聚合物的储能模量相关，AHAMAA的吸水率高于交联聚[AM-co-AA] ]。 AHAMAA的残留铝浓度（0.09-0.2 mg L-1）表明聚合物絮凝剂的稳定性与所观察到的正切增量和较高的G''和G'值高度吻合。交联的聚[AM-co-AA]和AMAHAA均令人满意地降低了高岭土悬浮液的浊度，但是后者提供了更好的还原性能。

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