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首页> 外文期刊>Journal of Polymers and the Environment >Novel Biodegradable Flocculating Agents Based on Grafted Starch Family for the Industrial Effluent Treatment
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Novel Biodegradable Flocculating Agents Based on Grafted Starch Family for the Industrial Effluent Treatment

机译：基于接枝淀粉家族的新型可生物降解絮凝剂用于工业废水处理

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摘要

Grafting of acrylamide (AM), N,N-dimethylacrylamide (DMA) and a mixture of N,N-dimethylacrylamide and acrylic acid (AA) onto starch family namely Starch (St), amylopectin (AP) and hydroxyethyl starch (HES) were carried out by free radical polymerization technique in water medium. The so prepared graft copolymers were characterized by different characterization techniques. The flocculation characteristics of all the graft copolymers were performed in an industrial textile dye effluent, a paper mill waste water and municipal sewage waste water. Their flocculation performances were also evaluated in 0.25 wt% iron ore slime, 1.0 wt% kaolin clay, 1.0 wt% coal and 1.0 wt% silica suspensions separately. A comparative study was also made among the three graft copolymers in each series (St, AP and HES) in all the suspensions along with the real waste water. The flocculation characteristics of the best performing graft copolymer was also compared with some commercial flocculants like magnafloc 1011, telfloc 2230 and percol 181 in all the synthetic suspensions, industrial effluents and municipal sewage waste water. In coal, iron ore slime and silica suspensions and in municipal sewage waste water polysaccharide-g-PDMA showed best results but in kaolin clay suspension, in paper mill effluent and in textile dye effluent polysaccharide-g-(PDMA-co-AA) showed best performance. Among all the graft copolymers, graft copolymer based on HES showed best flocculation performance when compared to other graft copolymers as well as to some commercially available flocculants.
机译：将丙烯酰胺（AM），N，N-二甲基丙烯酰胺（DMA）以及N，N-二甲基丙烯酰胺和丙烯酸（AA）的混合物接枝到淀粉家族（即淀粉（St），支链淀粉（AP）和羟乙基淀粉（HES））上通过自由基聚合技术在水介质中进行。如此制备的接枝共聚物通过不同的表征技术表征。所有接枝共聚物的絮凝特性均在工业纺织染料废水，造纸厂废水和市政污水中进行。还分别在0.25 wt％的铁矿泥，1.0 wt％的高岭土，1.0 wt％的煤和1.0 wt％的二氧化硅悬浮液中评估了它们的絮凝性能。还对所有悬浮液中每个系列的三种接枝共聚物（St，AP和HES）以及实际废水进行了比较研究。还比较了性能最佳的接枝共聚物的絮凝特性，并将其与某些商业絮凝剂（如magnafloc 1011，telfloc 2230和percol 181）在所有合成悬浮液，工业废水和城市污水中进行了比较。在煤，铁矿泥和二氧化硅悬浮液中以及在城市污水中，多糖-g-PDMA均显示出最佳结果，但在高岭土悬浮液中，造纸废水和纺织染料废水中，多糖-g-（PDMA-co-AA）显示最棒的表演。在所有接枝共聚物中，与其他接枝共聚物以及某些市售絮凝剂相比，基于HES的接枝共聚物表现出最佳的絮凝性能。

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