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首页> 外文期刊>Journal of Applied Polymer Science >Functionalized galactoglucomannan-based hydrogels for the removal of metal cations from aqueous solutions
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Functionalized galactoglucomannan-based hydrogels for the removal of metal cations from aqueous solutions

机译：功能化半乳葡甘露聚糖基水凝胶，用于从水溶液中去除金属阳离子

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摘要

New types of hydrogels derived from O-acetyl galactoglucomannan (AcGGM) hemicellulose have been synthesized and characterized. The objective of this work was to analyze the sorption capacity (S) of three types of hydrogels containing AcGGM derivatives incorporated into the carboxylic groups of the polymer chain in the AA hydrogel, sulfonic groups in the APA hydrogel, and amide groups in the acrylamide (Aam) hydrogel. These hydrogels are capable of interacting and removing ions such as cadmium [Cd(II)], copper [Cu(II)], lead [Pb(II)], nickel [Ni(II)], and zinc [Zn(II)]. The results show that AA and Aam hydrogels had a lower sorption capacity of ions compared to the APA hydrogel, which had a high sorption capacity. The maximal sorption capacity was determined by the successive enrichment method, obtaining Pb(II) amount of 48.3 mg/g of AA hydrogel, 65.8 mg/g of APA hydrogel, and 40.8 mg/g of Aam hydrogel. Hence, Pb(II) ions are greatly retained by the three hydrogels. These results are promising for the development of new materials with potential applications in metal ion removal. (C) 2016 Wiley Periodicals, Inc.
机译：合成和表征了衍生自O-乙酰基半乳糖甘露聚糖（AcGGM）半纤维素的新型水凝胶。这项工作的目的是分析三种类型的水凝胶的吸附能力（S），这些水凝胶包含并入AA水凝胶中聚合物链的羧基，APA水凝胶中的磺酸基和丙烯酰胺中的酰胺基的AcGGM衍生物（ Aam）水凝胶。这些水凝胶能够相互作用和去除离子，例如镉[Cd（II）]，铜[Cu（II）]，铅[Pb（II）]，镍[Ni（II）]和锌[Zn（II） ]。结果表明，与具有高吸附能力的APA水凝胶相比，AA和Aam水凝胶具有较低的离子吸附能力。通过连续富集法确定最大吸附容量，得到48.3 mg / g AA水凝胶，65.8 mg / g APA水凝胶和40.8 mg / g Aam水凝胶的Pb（II）量。因此，Pb（II）离子被三种水凝胶大大保留。这些结果对于开发具有在金属离子去除中潜在应用的新材料很有希望。 （C）2016威利期刊公司

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