摘要
针对溶剂萃取法提取废弃SCR催化剂浸出液中V和W单级萃取率较低的问题,首先采用由TOA、异癸醇和航空煤油混合制成的萃取体系进行单因素试验确定影响V和W萃取效果的主要因素和水平,在此基础上采用Box-Behnken响应面法开展V和W的萃取试验,并通过方差分析、模型可靠性分析以及3D响应面图研究影响因素及其交互作用对V和W萃取效果的影响。结果表明,影响V和W萃取率的因素显著性排序均为:TOA体积分数>相比O/A>pH值,交互作用的显著性排序均为:TOA体积分数和相比O/A>pH值和相比O/A>pH值和TOA体积分数。利用Design Expert软件对模型进行优化后的试验条件为:浸出液pH值为2.28、TOA体积分数为3.83%、相比O/A为0.23,此时V和W萃取率分别达到93.40%和99.37%,误差范围均在1%以内,证明了优化模型的可靠性,为后续高效回收V和W奠定了基础。
In order to address the issue of low single-stage extraction rate for V and W from the leachate of spent SCR catalyst using solvent extraction,an extraction system comprising(TOA),isodecyl alcohol,and aviation kerosene was employed in single-factor experiments.These experiments aimed to identify the primary factors and their levels influencing the extraction efficiency of V and W.Based on this,V and W extraction experiments were conducted using the Box-Behnken response surface methodology to investigate the impact of these factors and their interactions on the extraction process.This involved variance analysis,model reliability assessment,and 3D response surface mapping.The results demonstrate the significance ranking of the factors affecting the extraction rates of V and W is:TOA volume fraction>O/A ratio>pH.The significance ranking of the interaction effects is:TOA volume fraction and O/A ratio>pH and O/A ratio>pH and TOA volume fraction.The optimized experiment conditions of the model using Design Expert software are:leachate pH of 2.28,TOA volume fraction of 3.83%,and O/A ratio of 0.23,the extraction rates of V and W reach 93.40%and 99.37%respectively,with an error range within 1%.This demonstrates the reliability of the optimized model and provides a strong basis for efficient recovery of V and W in future processes.
作者
俞子铉
李强
李奇勇
何玉敏
游智雄
张云翔
YU Zixuan;LI Qiang;LI Qiyong;HE Yumin;YOU Zhixiong;ZHANG Yunxiang(College of Resources and Chemical Engineering,Sanming University,Sanming 365004,China;College of Chemical Engineering,Fuzhou University,Fuzhou 350108,China;Cleaner Production Technology Engineering Research Center of Fujian Universities,Sanming 365004,China)
出处
《有色金属(中英文)》
北大核心
2025年第4期595-606,共12页
Nonferrous Metals
基金
福建省科技厅引导性项目(2022Y0075)
三明市科技项目(2022-G-9,2023-S-1)
闽江源生态保护研究院培育项目(MJ2021001)。
关键词
萃取
V萃取率
W萃取率
响应面法
交互作用
extraction
V extraction rates
W extraction rates
response surface methodology
interaction
