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Preparation of Iron Carbon Composite Material by Extracting Iron from Bauxite Residue and Its Adsorption of Heavy Metal Cd(II)
Bulletin of Environmental Contamination and Toxicology ( IF 2.7 ) Pub Date : 2022-06-09 , DOI: 10.1007/s00128-022-03539-x
Xiaoli Lei 1 , Zixuan Wang 1 , Jiamin Qi 1 , Xingyuan Wang 1 , Yubao Chen 1 , Bin Li 1 , Yue Zhou 1
Affiliation  

An effective method of iron extraction from bauxite residue was explored, and iron was used to prepare iron carbon composite material, which have a good adsorption effect on the heavy metal cadmium. After acid washing, acid leaching, Fe(III) reduction and ferrous oxalate decomposition, FeSO4·H2O(RM) was successfully extracted from bauxite residue, and the iron loss was only 4.35%. FexOy-BC(RM) nanocomposite materials were prepared by loading FeSO4·H2O(RM) onto walnut shell biochar (BC) (a kind of agricultural and forestry waste) by an in situ reduction and oxidation method. The results showed that the adsorption effect of FexOy-BC(RM) on Cd(II) was better than that of commercial FexOy-BC. XPS, TEM, SEM characterization analysis showed that FexOy-BC(RM) immobilized Cd(II) by adsorption, complexation, etc.to achieve a highly efficient adsorption of heavy metal Cd(II) in wastewater.



中文翻译:

铝土矿渣提铁制备铁碳复合材料及其对重金属Cd(II)的吸附

探索了一种从铝土矿渣中提取铁的有效方法,利用铁制备铁碳复合材料,对重金属镉具有良好的吸附作用。经过酸洗、酸浸、Fe(III)还原和草酸亚铁分解,成功地从铝土矿渣中提取了FeSO 4 ·H 2 O(RM),铁损仅为4.35%。负载FeSO 4 ·H 2制备FexOy-BC(RM)纳米复合材料O(RM) 原位还原氧化法在核桃壳生物炭 (BC)(一种农林废弃物)上。结果表明,FexOy-BC(RM)对Cd(II)的吸附效果优于商业FexOy-BC。XPS、TEM、SEM表征分析表明,FexOy-BC(RM)通过吸附、络合等方式固定化了Cd(II),实现了对废水中重金属Cd(II)的高效吸附。

更新日期:2022-06-10
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