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Purification of dye-contaminated ethanol-water mixture using magnetic cellulose powders derived from agricultural waste biomass
Carbohydrate Polymers ( IF 11.2 ) Pub Date : 2021-01-22 , DOI: 10.1016/j.carbpol.2021.117690
Sijie Zhou , Liangjun Xia , Zhuan Fu , Chunhua Zhang , Xiangyu Duan , Shiyu Zhang , Yunli Wang , Cailing Ding , Xin Liu , Weilin Xu

Eco-friendly ethanol (EtOH)-water (H2O) mixture has demonstrated huge potential in the textile industry. However, the uncontrolled discharge of dye-contaminated EtOH-H2O mixture to the ecosystem has numerous adverse effects. Herein, a sustainable approach utilizing the agricultural waste biomass-Juncus effusus (JE) to synthesize magnetic cellulose JE powders (M-JEPs) has been proposed for purification of dye-contaminated EtOH-H2O mixture. Batch experiments and physical-chemical analyses were performed to explore the adsorption performance and mechanism. The as-prepared cellulose M-JEPs exhibited ultrafast adsorption performance, which can reach the adsorption equilibrium within 10 min. The adsorption isotherms and kinetics demonstrated that the adsorption fitted well with the Langmuir isotherm and pseudo-second-order kinetic models, exhibiting the maximum adsorption capacity towards C.I. Reactive Red 195 and C.I. Reactive Blue 222 of 58.21 mg/g and 86.06 mg/g at the temperature of 303K. These findings indicate the feasibility of using cellulose M-JEPs for rapid purification of the dye-contaminated EtOH-H2O mixture.



中文翻译:

利用源自农业废弃物生物质的磁性纤维素粉末纯化染料污染的乙醇-水混合物

环保的乙醇(EtOH)-水(H 2 O)混合物在纺织工业中显示出巨大的潜力。但是,染料污染的EtOH-H 2 O混合物不受控制地排放到生态系统中会产生许多不利影响。在此,利用农业废物生物量一可持续的方法灯心草(JE),以合成磁性纤维素JE粉末(M-JEPs)已经提出了用于染料污染的EtOH-H的纯化2O混合物。进行了批处理实验和理化分析,以探讨其吸附性能和机理。所制备的纤维素M-JEPs具有超快的吸附性能,可以在10分钟内达到吸附平衡。吸附等温线和动力学表明,吸附与朗缪尔等温线和拟二级动力学模型吻合得很好,对CI活性红195和CI活性蓝222的最大吸附容量分别为58.21 mg / g和86.06 mg / g。温度303K。这些发现表明使用纤维素M-JEP快速纯化被染料污染的EtOH-H 2 O混合物的可行性。

更新日期:2021-01-28
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