净水技术2025，Vol.44Issue(6)：132-137,163,7.DOI:10.15890/j.cnki.jsjs.2025.06.016
废白土炭对印染废水中曙红Y和茜素红的吸附性能分析
Analysis of Spent Bleaching Earth Carbon for Adsorption Properties of Eosin Y and Alizarin Red in Printing and Dyeing Wastewater
摘要
Abstract
[Objective]The paper introduces the adsorption properties of spent bleaching earth carbon(SBE@C)for two typical dyes,eosin Y(EY)and alizarin red(AR),in printing and dyeing wastewater,and explores the effect of initial pH on the adsorption capacity.[Methods]Spent bleaching earth(SBE)was pyrolyzed under anoxic conditions to prepare SBE@C.The adsorption performance was evaluated using adsorption kinetics and isotherm models.In the experiment,methyl orange(MO)was introduced as an additional pollutant to form a multicomponent dye system comprising three dyes.Adsorption tests were conducted on this composite dye solution using different dosages(1,2,3 g/L)of SBE@C.The adsorption capacity at different time intervals was measured,and the influence of initial pH on adsorption performance was analyzed.[Results]The result showed that the adsorption of EY and AR by SBE@C followed the pseudo-second-order kinetic model,and the adsorption capacity decreased with increasing dosage.EY adsorption followed the Freundlich model,indicating multi-layer adsorption on a heterogeneous surface,while AR adsorption fitted the Langmuir model,suggesting a monolayer adsorption process.Under neutral and alkaline conditions,SBE@C exhibits strong and adsorption capacity toward dye solutions.The adsorption performance of SBE@C was pH-dependent,with stronger adsorption observed under neutral and alkaline conditions(pH value was 7,9,11),particularly at pH value was 7 and 9.[Conclusion]SBE@C exhibits excellent adsorption performance for EY and AR dyes in printing and dyeing wastewater.The adsorption capacity is significantly influenced by pH,with optimal performance under neutral and alkaline conditions.This study indicates that SBE@C is a promising,environmental friendly,and cost-effective adsorbent for wastewater treatment.关键词
废白土炭(SBE)/印染废水/吸附/曙红Y(EY)/茜素红(AR)Key words
spent bleaching earth carbon(SBE)/printing and dyeing wastewater/adsorption/eosin Y(EY)/alizarin red(AR)分类
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刘志鑫,李进松,王静雯,史亚慧,万东锦,张明畅..废白土炭对印染废水中曙红Y和茜素红的吸附性能分析[J].净水技术,2025,44(6):132-137,163,7.基金项目
郑州市科技协同创新专项重点项目(21ZZXTCX05) （21ZZXTCX05）
河南工业大学自科创新基金支持计划项目(2021ZKCJ09) （2021ZKCJ09）
