吸附
水溶液
解吸
镧系元素
尖晶石
材料科学
纳米颗粒
Zeta电位
萃取(化学)
铁氧体(磁铁)
化学
无机化学
分析化学(期刊)
离子
色谱法
纳米技术
物理化学
复合材料
有机化学
冶金
作者
Reza Asadi,Hadi Abdollahi,Zohreh Boroumand,Amir Shafiee Kisomi,Mohammad Hossein Karimi Darvanjooghi,Sara Magdouli,Satinder Kaur Brar
标识
DOI:10.1016/j.envpol.2022.119770
摘要
In this research, a novel CoFe2O4-GO (Graphen Oxide) resulting from the combination of high applicable magnetic and organic base materials and synthesized with a simple and fast co-precipitation route was synthesized for the REEs (Rare Earth Elements) extraction. This adsorbent could remove the La3+, Ce3+, Nd3+ and Eu3+ by maximum adsorption capacity of 625, 626, 714.2, 1111.2 mg/g at optimized pH = 6, respectively. A data-driven model was obtained using Group Method of Data Handling (GMDH)-based Neural Network to estimate the adsorption capacity of these LREEs as a function of time, pH, temperature, adsorbent ζ (zeta)- potential, initial concentration of lanthanides ions, and ε which is defined by the physico-chemical properties of lanthanides. The results clearly indicated that the model estimate the experimental values with good deviation (mostly less than 10%) and it can be used for the prediction of the results from other similar researches with less than 25% deviation. The results of sensitivity analysis indicated that the adsorption capacity is more sensitive to pH of the solution, temperature, and ε. Finally, the desorption studies showed an excellent removal efficiency (97%) at least for three adsorption-desorption cycles. These results claimed that the CoFe2O4-GO is a highly efficient adsorbent for the REEs extraction.
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