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⁻¹ 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 R² ≥ 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.

使用植物修复去除染料已证明其具有降解许多顽固染料的潜力。在本研究工作中，针对直接红 28 (DR28) 染料对Salvinia molesta Mitchell ( S. molesta )的植物修复能力的动力学研究进行了评估。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。^{对于 50 mg L -1}染料溶液，在 pH 6.5下含有 4 g S. molesta植物，可实现约 90% 的染料脱色。实验结果采用伪第一、伪第二和 Elovich 动力学模型进行评估。^{验证表明具有相关值 R 2}的伪二阶曲线最合适 ≥ 0.99。FTIR 研究支持通过植物毛状根和染料分子之间的官能团相互作用来植物提取 DR28。本研究的结果表明，S. molesta可用于修复在自然条件下被染料废水污染的水体和湿地。