多糖类绿色絮凝剂：混凝效果的系统比较研究

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers Pub Date : 2025-03-22 DOI:10.1016/j.carbpol.2025.123527

Simon Leonhartsberger , Pierre Carmona , Bernhard Seidl , Karl-Juergen Mann , Martin Kozich , Irina Sulaeva , Christian Stanetty , Marko D. Mihovilovic

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引用次数: 0

摘要

在对绿色絮凝剂的追求的驱动下，本研究探索了阳离子化多糖如何提高混凝絮凝效率，填补了系统比较分析的空白。本文介绍了絮凝分数，它为絮凝评价和比较提供了一个强有力的框架。对淀粉、壳聚糖、菊粉、瓜尔胶、普鲁兰和羟乙基纤维素进行了测试，包括未改性的和用季铵化合物改性的。与阳离子聚丙烯酰胺（cPAM）和聚二烯基二甲基氯化铵（pDADMAC）等合成絮凝剂相比，混凝絮凝效果良好。利用AsFlFFF-MALS、NMR、PCD、流变学、SEM、图像分析和zeta电位等先进技术对这些多糖及其絮凝效果进行了全面表征。结果表明，阳离子化多糖对高岭土悬浮液（模型体系）和工业淀粉污泥的絮凝效果明显优于未改性的多糖。确定了影响絮凝作用的关键因素——分子量、电荷密度和粘度及其变化趋势，其中电荷密度越高，絮凝作用越强，特别是在高岭土悬浮液中，而分子量越高，絮凝作用越强。未改性多糖中，壳聚糖含量最高，阳离子普鲁兰和淀粉含量最高。本研究重点研究了生态友好型阳离子多糖，为优化水处理提供了见解，并对六种多糖的内在参数和絮凝效率进行了比较分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Polysaccharide-based green flocculants: A systematic and comparative study of their coagulation-flocculation efficiency

查看原文本刊更多论文

Polysaccharide-based green flocculants: A systematic and comparative study of their coagulation-flocculation efficiency

Driven by the quest for greener flocculants, this study explores how cationized polysaccharides can enhance coagulation-flocculation efficiency, filling a gap in systematic comparative analyses. We introduce here a flocculation score which provides a robust framework for flocculation evaluation and comparison. Starch, chitosan, inulin, guar gum, pullulan, and hydroxyethyl cellulose were tested, both unmodified and modified with quaternary ammonium compounds. Promising results in coagulation-flocculation were observed compared to synthetic flocculants like cationic polyacrylamide (cPAM) and Poly(Diallyldimethylammonium Chloride) (pDADMAC).

Advanced techniques such as AsFlFFF-MALS, NMR, PCD, rheology, SEM, image analysis, and zeta potential were used to thoroughly characterize these polysaccharides and their flocculation efficiency. Results revealed notable flocculation enhancement in kaolin suspension (model system) and industrial starch sludge with cationized polysaccharides over their unmodified counterparts. Key influencing factors —molecular weight, charge density, and viscosity— and their trends were identified, with higher charge densities notably enhancing flocculation particularly in kaolin suspensions, and higher molecular weight enhancing flocculation in industrial sludge. Chitosan emerged as the top unmodified polysaccharide, while cationic pullulan and starch were found to lead among modified polysaccharides.

This study highlights eco-friendly cationized polysaccharides, providing insights for optimizing water treatment and a comparative analysis of six polysaccharides' intrinsic parameters and flocculation efficiency.

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.