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Textile with a hydrogel and iron oxide nanoparticles for wastewater treatment after reactive dyeing
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-09-18 , DOI: 10.1002/app.49954
Daniela Atanasova 1 , Desislava Staneva 1 , Ivo Grabchev 2
Affiliation  

In this work, we describe for the first time the synthesis of a hydrogel with iron oxide nanoparticles, uniformly distributed in its structure on a polyamide fabric by surface initiated photopolymerization. The type of outgoing iron ions Fe(II), Fe(III), and the combination between them influences the properties of the iron oxide particles and the obtained composite materials (PAF2, PAF3, and PAF32). All composite materials have been investigated as catalysts in heterogeneous Fenton process for treating real industrial wastewater after dyeing of cotton fabric with reactive dye Drimarene K‐7B. Different conditions on the degradation of this dye have been investigated. The best result for discoloration has been obtained with PAF2 at concentration 9.4 g L−1 and pH = 2.2 in the presence of H2O2 (93.3 mmol L−1, where 78% of dye was degraded for 24 h and 90.5%‐for 48 h. The high salinity of wastewaters, typical for dyeing with reactive dyes favors discoloration, while surface‐active agents hinder the process. The obtained material is reusable and is more effective in less polluted water solutions. It has been found that the composite material can be used repeatedly.

中文翻译:

具有水凝胶和氧化铁纳米粒子的纺织品,用于反应性染色后的废水处理

在这项工作中,我们首次描述了通过表面引发的光聚合反应,将具有氧化铁纳米粒子的水凝胶合成成均匀分布在聚酰胺织物上的结构。流出的铁离子Fe(II),Fe(III)的类型及其组合会影响氧化铁颗粒和所得复合材料(PAF2,PAF3和PAF32)的性能。所有的复合材料均已作为非均相Fenton工艺中的催化剂进行了研究,以用活性染料Drimarene K-7B对棉织物进行染色后,用于处理实际的工业废水。已经研究了该染料降解的不同条件。在H 2存在下,浓度为9.4 g L -1且pH = 2.2的PAF2可获得最佳的脱色结果O 2(93.3 mmol L -1,其中78%的染料被降解24小时,90.5%-被降解48小时。废水中的高盐度(通常用于活性染料染色)有助于褪色,而表面活性剂阻碍了该过程所获得的材料是可重复使用的,并且在污染较少的水溶液中更有效,已经发现该复合材料可以重复使用。
更新日期:2020-09-18
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