Simultaneous Removal of Organic Dyes from Aqueous Solutions by Renewable Alginate Hybridized with Graphene Oxide,Journal of Chemical & Engineering Data

当前位置： X-MOL 学术 › J. Chem. Eng. Data › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Simultaneous Removal of Organic Dyes from Aqueous Solutions by Renewable Alginate Hybridized with Graphene Oxide
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-08-20 , DOI: 10.1021/acs.jced.0c00277
Hongjuan Bai ₁ , Junhang Chen ₁ , Zhantao Wang ₁ , Liujie Wang ₁ , Edvina Lamy ₂

Affiliation

Simultaneous adsorption of coexisting organic dyes from industrial wastewater is challenging, and the mechanisms of the coadsorption of these dyes remain unclear. Herein, renewable alginate hybridized with graphene oxide composites were used to investigate adsorption properties of methylene blue (MB) and neutral red (NR) in both single and binary systems. In the monocontaminant system of MB or NR, the adsorption isotherm followed the Langmuir model. Both pseudo-first-order and pseudo-second-order models could well describe the adsorption kinetics of MB and NR. With regards to the adsorption process for both dyes, a diffusion process with two stages was observed. However, in the coadsorption system, competitive adsorption of MB and NR occurred. The adsorption isotherm could be also well described by the Langmuir model, while adsorption kinetics was better fitted by the pseudo-second-order model. Compared to the single system, a one-stage diffusion process occurred in binary systems for both adsorption processes of MB and NR.

中文翻译：

可再生海藻酸盐与氧化石墨烯杂交同时去除水溶液中的有机染料

从工业废水中同时吸附共存的有机染料具有挑战性，并且这些染料共吸附的机理仍然不清楚。在本文中，可再生海藻酸盐与氧化石墨烯复合材料被用来研究亚甲基蓝（MB）和中性红（NR）在单体系和二体系中的吸附性能。在MB或NR的单污染物系统中，吸附等温线遵循Langmuir模型。伪一级和伪二级模型都可以很好地描述MB和NR的吸附动力学。关于两种染料的吸附过程，观察到具有两个阶段的扩散过程。但是，在共吸附系统中，发生了MB和NR的竞争性吸附。Langmuir模型也可以很好地描述吸附等温线，假二阶模型更好地拟合了吸附动力学。与单系统相比，二元系统中的MB和NR吸附过程都发生了一级扩散过程。

更新日期：2020-09-10

点击分享查看原文

点击收藏

阅读更多本刊最新论文