Efficient Phytoremediation of Methyl Red and Methylene Blue Dyes from Aqueous Solutions by Juncus effusus.

IF 3.7 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY ACS Omega Pub Date : 2025-01-10 eCollection Date: 2025-01-21 DOI:10.1021/acsomega.4c07468

Oya Aydın Urucu, Benedetta Garosi, Rabi A Musah

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Abstract

The contamination of water with dyes stemming from the discharge of industrial waste poses significant environmental risks and health concerns. In this study, the phytoremediation potential of the wetland plant Juncus effusus was investigated (as a function of plant biomass, pH, contact time, and initial dye concentration) for the removal of methylene blue and methyl red dyes from wastewater. The experimental adsorption capacities under the optimum conditions were found to be 1.421 and 1.038 mg g^-1 plant wet weight for methylene blue and methyl red, respectively. Pseudo-first-order and pseudo-second-order models were employed to determine the kinetics of the phytoremediation adsorption process. The pseudo-second-order model was found to be the most suitable for both methylene blue and methyl red. The results were found to conform to the Freundlich equilibrium isotherm, with a correlation of R ² ≥ 0.99 for removal of both dyes. Confirmation of dye uptake by the plant was determined by using Fourier transform infrared spectroscopy (FTIR). Additionally, direct analysis in real time-high-resolution mass spectrometry (DART-HRMS) analysis of plant roots is reported here for the first time as a means to investigate dye degradation by plant roots.

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工业废水排放造成的水体染料污染对环境和健康造成了严重威胁。本研究调查了湿地植物 Juncus effusus 的植物修复潜力（作为植物生物量、pH 值、接触时间和初始染料浓度的函数），以去除废水中的亚甲基蓝和甲基红染料。实验发现，在最佳条件下，亚甲基蓝和甲基红的吸附容量分别为 1.421 和 1.038 mg g-1 植物湿重。采用伪一阶和伪二阶模型来确定植物修复吸附过程的动力学。结果发现伪二阶模型最适合亚甲基蓝和甲基红。结果发现，这两种染料的去除均符合 Freundlich 平衡等温线，相关系数 R 2 ≥ 0.99。傅立叶变换红外光谱法（FTIR）证实了植物对染料的吸收。此外，本文还首次报道了对植物根系进行实时高分辨质谱直接分析（DART-HRMS）的方法，以此来研究植物根系对染料的降解情况。

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来源期刊

ACS Omega Chemical Engineering-General Chemical Engineering

CiteScore

6.60

自引率

4.90%

发文量

3945

审稿时长

2.4 months

期刊介绍： ACS Omega is an open-access global publication for scientific articles that describe new findings in chemistry and interfacing areas of science, without any perceived evaluation of immediate impact.