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Optimizing of malachite green extraction from aqueous solutions using hydrophilic and hydrophobic nanoparticles
Journal of Molecular Liquids ( IF 6 ) Pub Date : 2020-03-30 , DOI: 10.1016/j.molliq.2020.113014
Peyman Jalilvand , Ahmad Rahbar-Kelishami , Toraj Mohammadi , Hadi Shayesteh

In this study, malachite green (MG) dye extraction was investigated using the supported liquid membrane (SLM) from the aqueous solution. Response surface methodology (RSM) based on the central composite design (CCD) was performed for determining the optimum of operating parameters include pH, feed concentration, and carrier. Extraction percentage of MG after 10 h in optimum condition, feed phase pH of 6, feed concentration of 135.1 mg/mL, and carrier of 21.91%v/v is 93.15%. Influence of presence hydrophilic TiO2 and hydrophobic SiO2 nanoparticles were investigated on extraction percentage and stability of the system. The hydrophilic TiO2 nanoparticles have a negative effect on the SLM and decreased extraction percentage of MG dye and stability of the SLM. The SiO2 hydrophobic nanoparticle caused to improved stability of the SLM system and increased the MG dye extraction percentage. Under optimal operating conditions, loading of the SiO2 hydrophobic nanoparticles to 5 mg/mL, the stability of the system, and MG dye extraction efficiency were obtained 99.07% and 70 h, respectively.



中文翻译:

使用亲水性和疏水性纳米粒子优化从水溶液中提取的孔雀石绿

在这项研究中,使用支持的液膜(SLM)从水溶液中研究了孔雀石绿(MG)染料的提取。进行了基于中央复合设计(CCD)的响应面方法(RSM),以确定包括pH,进料浓度和载体在内的最佳操作参数。在最佳条件下10 h,进料阶段pH为6,进料浓度为135.1 mg / mL,载体为21.91%v / v的MG的提取率为93.15%。研究了亲水性TiO 2和疏水性SiO 2纳米粒子的存在对体系萃取率和稳定性的影响。亲水性TiO 2纳米颗粒对SLM有负面影响,并且会降低MG染料的提取率和SLM的稳定性。SiO 2疏水性纳米粒子改善了SLM系统的稳定性,并提高了MG染料的提取率。在最佳操作条件下,SiO 2疏水性纳米粒子的负载量为5 mg / mL,系统的稳定性和MG染料的提取效率分别达到99.07%和70 h。

更新日期:2020-03-31
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