利用活性纳米复合表面增强阳离子染料去除和吸附过程的高活性：活化和等温线模型

IF 0.4 Q4 ENVIRONMENTAL SCIENCES

Asian Journal of Water, Environment and Pollution Pub Date : 2023-11-27 DOI:10.3233/ajw230076

Aseel M. Aljeboree, A. Alkaim

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引用次数: 0

摘要

本研究合成了一种新型低成本材料--多碳纳米管/氧化锌纳米复合材料（MWCNT/ZnO），该纳米复合材料可用作去除工业用水中染料的吸附剂，如阳离子模型马克西龙蓝（GRL）染料，以便通过 FESEM、TEM 和 BET 研究吸附方法的吸附机理。对 Freundlich 和 Langmuir 两种等温线模型进行了研究，根据数据确定其符合等温线 Freundlich 估计，R2>0.9798。在最佳条件下，在 GRL 染料中用水对（MWCNT/ZnO）纳米复合材料进行了再活化和再利用，直至第 5 周期。在使用（MWCNT/ZnO）纳米复合材料 3 个周期后，效率仍然显著（>80%），看来（MWCNT/ZnO）纳米复合材料可能是一种可再生的吸收剂，此外，离子强度的影响增加了 GRL 染料在水介质中的溶解度。因此，加入盐后，水溶液会降低去除率。此外，通过比较几种表面（ZnONPs、MWCNT、MWCNT/ZnO），发现 MWCNT/ZnO 纳米复合材料是去除 GRL 染料的最佳表面。

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Enhanced High Activity for Removal and Adsorption Process of Cationic Dye by Using Active Nanocomposite Surface: Reactivation and Isotherm Models

In this research, a new low-cost material was synthesised multi carbon nanotube/Zinc oxide nanocomposite (MWCNT/ZnO), nanocomposite used as a sorbent for dye removal from industrial Water treatment, as like cationic model Maxillon blue (GRL) dye in order to find the adsorption mechanism of adsorption methods were studied via FESEM, TEM, and BET. Two models of Freundlich and Langmuir isotherm were studied, and according to the data, it was established that it conforms to the isotherm Freundlich estimation on the value of R2 > 0.9798. The reactivation and re-use of (MWCNT/ZnO) nanocomposite were performed by using water in the GRL dye up to Cycle 5 under the best conditions. After the 3 cycles of using (MWCNT/ZnO) nanocomposite, the efficiency is still significant (>80%) and it appears that the (MWCNT/ZnO) nanocomposite is a probable re-newable absorber, moreover, the effect of ionic strength increases the solubility of the GRL dye in aqueous medium. Thus, when salt is added, the aqueous solution decreases the removal percentage. Also, a comparison among several surfaces (ZnONPs, MWCNT, MWCNT/ZnO), found MWCNT/ZnO nanocomposite the best surfaces to remove GRL dye.

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来源期刊

Asian Journal of Water, Environment and Pollution ENVIRONMENTAL SCIENCES-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Asia, as a whole region, faces severe stress on water availability, primarily due to high population density. Many regions of the continent face severe problems of water pollution on local as well as regional scale and these have to be tackled with a pan-Asian approach. However, the available literature on the subject is generally based on research done in Europe and North America. Therefore, there is an urgent and strong need for an Asian journal with its focus on the region and wherein the region specific problems are addressed in an intelligent manner. In Asia, besides water, there are several other issues related to environment, such as; global warming and its impact; intense land/use and shifting pattern of agriculture; issues related to fertilizer applications and pesticide residues in soil and water; and solid and liquid waste management particularly in industrial and urban areas. Asia is also a region with intense mining activities whereby serious environmental problems related to land/use, loss of top soil, water pollution and acid mine drainage are faced by various communities. Essentially, Asians are confronted with environmental problems on many fronts. Many pressing issues in the region interlink various aspects of environmental problems faced by population in this densely habited region in the world. Pollution is one such serious issue for many countries since there are many transnational water bodies that spread the pollutants across the entire region. Water, environment and pollution together constitute a three axial problem that all concerned people in the region would like to focus on.