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Amyloid Fibrils Aerogel for Sustainable Removal of Organic Contaminants from Water.
Advanced Materials ( IF 29.4 ) Pub Date : 2020-02-06 , DOI: 10.1002/adma.201907932
Mohammad Peydayesh 1 , Meret Kim Suter 1 , Sreenath Bolisetty 1, 2 , Samy Boulos 3 , Stephan Handschin 1 , Laura Nyström 3 , Raffaele Mezzenga 1, 4
Affiliation  

Water contamination by organic pollutants is ubiquitous and hence a global concern due to detrimental effects on the environment and human health. Here, it is demonstrated that amyloid fibrils aerogels are ideal adsorbers for removing organic pollutants from water. To this end, amyloid fibrils prepared from β-lactoglobulin, the major constituent of milk whey protein, are used as building blocks for the fabrication of the aerogels. The adsorption of Bentazone, Bisphenol A, and Ibuprofen, as model pollutants, is evaluated under quasi-static conditions, without use of energy or pressure. Through adsorption by amyloid fibrils aerogel, excellent removal efficiencies of 92%, 78%, and 98% are demonstrated for Bentazone, Bisphenol A, and Ibuprofen, respectively. Furthermore, the maximum adsorption capacity of amyloid fibrils aerogel for Bentazone, Bisphenol A, and Ibuprofen is 54.2, 50.6, and 69.6 mg g-1 , respectively. To shed light on the adsorption equilibrium process, adsorption isotherms, binding constants, saturation limits, and the effect of pH are evaluated. Finally, the regeneration of the aerogel over three consecutive cycles is studied, exhibiting high reusability with no significant changes in its removal performance. These results point at amyloid fibrils aerogels as a sustainable, efficient, and inexpensive technology for alleviating the ubiquitous water contamination by organic pollutants.

中文翻译:

淀粉样原纤维气凝胶,用于可持续去除水中的有机污染物。

有机污染物对水的污染无处不在,因此由于对环境和人类健康的有害影响而引起全球关注。在此,证明淀粉样蛋白原纤维气凝胶是从水中去除有机污染物的理想吸附剂。为此,由β-乳球蛋白(乳清蛋白的主要成分)制备的淀粉样原纤维被用作制造气凝胶的基础材料。在准静态条件下,在不使用能量或压力的情况下,评估了作为模型污染物的Bentazone,双酚A和布洛芬的吸附。通过淀粉样蛋白原纤维气凝胶的吸附,对Bentazone,双酚A和布洛芬的去除效率分别为92%,78%和98%。此外,淀粉样原纤维气凝胶对Bentazone的最大吸附能力,双酚A和布洛芬分别为54.2、50.6和69.6 mg g-1。为了阐明吸附平衡过程,需要评估吸附等温线,结合常数,饱和极限和pH的影响。最后,研究了气凝胶在三个连续循环中的再生,显示出高可重复使用性,其去除性能无明显变化。这些结果表明,淀粉样蛋白原纤维气凝胶是一种可持续,高效且廉价的技术,可减轻普遍存在的有机污染物对水的污染。研究了气凝胶在三个连续循环中的再生,显示出高可重复使用性,其去除性能无明显变化。这些结果表明,淀粉样蛋白原纤维气凝胶是一种可持续,高效且廉价的技术,可减轻普遍存在的有机污染物对水的污染。研究了气凝胶在三个连续循环中的再生,显示出高可重复使用性,其去除性能无明显变化。这些结果表明,淀粉样蛋白原纤维气凝胶是一种可持续,高效且廉价的技术,可减轻普遍存在的有机污染物对水的污染。
更新日期:2020-03-24
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