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首页> 外文期刊>Journal of Polymers and the Environment >Dual Function of Modified Palm Leaf Sheath Fibers in Adsorbing Reactive Yellow 3 and Cr(Ⅵ) From Dyeing Wastewater
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Dual Function of Modified Palm Leaf Sheath Fibers in Adsorbing Reactive Yellow 3 and Cr(Ⅵ) From Dyeing Wastewater

机译：改性棕榈叶鞘纤维在染色废水中吸附反应黄色3和Cr（Ⅵ）的双重功能

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摘要

The safe and effective treatment for dyeing wastewater including harmful metal ions, which are important environmental pollution sources, has not been solved in the realistic industry. Using natural materials with short regeneration cycle should be valued in recognized and effective adsorption techniques. In this study, hydroxyl-rich tannin molecules were successfully modified on palm leaf sheath fibers (PLSF) to obtain multifunctional adsorbent for simultaneous removal of dye molecules and heavy metal ions in dyeing wastewater. As a result, modified PLSF can effectively adsorb reactive yellow 3 (RY3) dye molecules with a maximum adsorption capacity of 83.19 mg/g from dyeing wastewater, while the sample loaded with RY3 can adsorb Cr(VI) with a maximum adsorption capacity of 189.48 mg/g. XRD, SEM, FT-IR, and stereomicroscope are used to characterize the adsorbent samples. The kinetic and thermodynamic analysis results show that the adsorption of RY3 and Cr(VI) by the adsorbent is consistent with pseudo-second-order kinetics and the Langmuir isotherm model. The thermodynamic parameters of Cr(VI) adsorption indicate that adsorption is a spontaneous endothermic process and has good reusability of Cr(VI).
机译：染色废水的安全有效治疗，包括有害金属离子，这是重要的环境污染来源，尚未在现实​​行业中得到解决。使用具有短再生循环的天然材料应估值，以公认的和有效的吸附技术。在该研究中，在棕榈叶鞘纤维（PLSF）上成功地改变了羟基的单宁分子，以获得多功能吸附剂，用于同时除去染色废水中的染料分子和重金属离子。结果，改性的PLSF可以有效地吸附具有83.19mg / g的最大吸附容量的反应性黄色3（RY3）染料分子，而用RY3负载的样品可吸附189.48的最大吸附容量。 mg / g。 XRD，SEM，FT-IR和立体显微镜用于表征吸附样品。动力学和热力学分析结果表明，吸附剂的RY3和Cr（VI）的吸附与伪二阶动力学和Langmuir等温模型一致。 Cr（VI）吸附的热力学参数表明吸附是一种自发的吸热过程，并且具有良好的Cr（VI）可重用性。

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