Brown Algal Residue for the Recovery of Metal Ions—Application to La(III), Cd(II), and Ni(II) Sorption

Daniel Ballesteros‐Plata; Yue Zhang; Enrique Rodríguez‐CastellónThierry VincentEric Guibal

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Brown Algal Residue for the Recovery of Metal Ions—Application to La(III), Cd(II), and Ni(II) Sorption

机译：用于金属离子回收的褐藻残留物——在La（III）、Cd（II）和Ni（II）吸附中的应用

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Abstract Removing hazardous metals and recovering valuable strategic metals from wastewater has become an important challenge for the industry. Herein, brown algal biomass residue (AR, after bio‐stimulant extraction, currently poorly valorized) is tested for the removal of Ni(II), Cd(II), and La(III) from aqueous solutions. This valorization of industrial waste makes profit of residual amounts of alginate‐based materials, which have a strong affinity for metal cations. Fourier transform infrared (FTIR) and X‐ray photoelectron spectroscopy (XPS) techniques are used for characterizing metal/biosorbent interactions. Uptake kinetics are relatively fast (equilibrium being reached in 180–240 min). The Sips equation fits the sorption isotherms; the maximum sorption capacities at pH ≈5 reach up to 0.84 mmol La g−1, 0.92 mmol Cd g−1, and 0.78 mmol Ni g−1. In binary solutions, AR shows marked preference for La(III) over divalent cations. This selectivity may be increased by complexing base metals with EDTA, opening the route for the selective recovery of rare earth elements. HCl solution reveals more efficient (>90% for La(III), ≈82% for Cd(II) and Ni(II)) than CaCl2 solution at pH 2 for metal desorption. This waste residue from biostimulant extraction (in brown algal biomass) can be valorized for the recovery of hazardous and strategic metal ions.

机译：摘要消除有害金属和恢复有价值的战略金属废水成为这个行业的一个重要挑战。在此,褐藻生物质残渣(后,基于“增大化现实”技术生物检测兴奋剂提取,目前不佳限价)检测镍(II),Cd (II),洛杉矶(III)水的解决方案。稳定物价的工业废料使利润剩余数量的海藻酸量的基础材料,这对金属阳离子有很强的亲和力。傅里叶变换红外(FTIR)和X射线光电子能谱(XPS)技术用于描述金属/ biosorbent交互。(平衡达到180 - 240分钟)。口方程适合吸附等温线;在≈5 pH值达到最大吸附能力0.84更易与拉克−1,0.92更易与Cd g−1和0.78更易倪g−1。偏爱(III) /二价阳离子。这种选择性可能增加了络合贱金属与EDTA、开放的路线稀土元素的选择性复苏。解决方案显示更有效(> 90%解决方案在pH值2金属解吸。从生物刺激素提取残渣(布朗藻类生物量)可以规定价格的复苏危险和战略金属离子。

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来源
《Advanced Sustainable Systems》 |2023年第3期|n/a-n/a|共16页
作者
Daniel Ballesteros‐Plata; Yue Zhang; Enrique Rodríguez‐CastellónThierry VincentEric Guibal;
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Centre des Matériaux des Mines d'Alès;

Campus de Teatinos;

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正文语种英语
中图分类环境科学、安全科学;
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Brown Algal Residue for the Recovery of Metal Ions—Application to La(III), Cd(II), and Ni(II) Sorption

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