Centre for Water Sciences, Chitkara University Institute of Engineering and Technology, Chitkara University, Rajpura, Punjab, 140401, India.
Bull Environ Contam Toxicol. 2022 Mar;108(3):437-442. doi: 10.1007/s00128-021-03297-2. Epub 2021 Jun 17.
The dye removal using phytoremediation has demonstrated its potential to degrade many recalcitrant dyes. The kinetic investigations for phytoremediation ability of Salvinia molesta Mitchell (S. molesta) were evaluated for Direct Red 28 (DR28) dye in the present research work. The potential of S. molesta was analysed at different pH and different initial dye concentrations. About 90 % of dye decolorization was achieved for 50 mg L dye solution with 4 g of S. molesta plant at pH 6.5. The experimental results were evaluated with pseudo-first, pseudo-second and Elovich kinetic models. The validation indicated the most suitable curve with Pseudo-second order having the correlation value R ≥ 0.99. FTIR studies supported the phytoextraction of DR28 through functional group interaction between plant hairy roots and dye molecules. The results of the present studies suggests that S. molesta can be utilized for remediation of water bodies and wetlands contaminated with dye wastewater in natural conditions.
利用植物修复去除染料已显示出其降解许多难处理染料的潜力。本研究工作评估了水鳖（Salvinia molesta Mitchell）（S. molesta）对直接红 28（DR28）染料的植物修复能力的动力学研究。在不同的 pH 值和不同的初始染料浓度下分析了 S. molesta 的潜力。在 pH 值为 6.5 时，用 4 g 的 S. molesta 植物处理 50 mg L 的染料溶液，可实现约 90%的染料脱色。实验结果用拟一级、拟二级和 Elovich 动力学模型进行了评估。验证表明，最适合的曲线是具有相关值 R≥0.99 的拟二级曲线。FTIR 研究支持了通过植物根毛与染料分子之间的官能团相互作用对 DR28 的植物提取。本研究的结果表明，S. molesta 可用于修复受天然条件下染料废水污染的水体和湿地。
