Adsorption performance of antimony by modified iron powder

Abstract

Modified iron powders were obtained by ball-milling and acid modification and the adsorption behavior and mechanism for Sb(iii) and Sb(v) analyzed. The improved adsorption capacity and low cost show the application potential of the modified material.

Antimony Isotope Fractionation during Adsorption on Iron (Oxyhydr)oxides

“…1 The affinity of Sb(V) toward the iron oxides depends on Sb species, pH, and the characteristics of iron (oxyhydr)oxides, and the bidentate mononuclear edge-sharing complex is involved in the adsorption process. 44,45 The process of heavy isotope enrichment in mine drainage water can be attributed to the adsorption of Sb(OH) 6 − on Fe hydroxides. 24,27,46 Enhancing comprehension of the process of fractionation during adsorption can provide valuable insights into the utilization of isotope tracer approaches.…”

“…Prior research on nontraditional stable isotopes indicates adsorption is commonly recognized as a significant mechanism that often leads to stable isotope fractionation. − ,− The adsorption of Zn onto iron (oxyhydr)­oxides results in the enrichment of heavy isotopes yet iron (oxyhydr)­oxides prefer to absorb light Ni isotopes. , The fractionation magnitude can also vary for different iron (oxyhydr)­oxides. − The migration of Sb can be affected by the presence of Fe (oxyhydr)­oxides in both soil and aqueous environments . The affinity of Sb­(V) toward the iron oxides depends on Sb species, pH, and the characteristics of iron (oxyhydr)­oxides, and the bidentate mononuclear edge-sharing complex is involved in the adsorption process. , The process of heavy isotope enrichment in mine drainage water can be attributed to the adsorption of Sb­(OH) 6 – on Fe hydroxides. ,, Enhancing comprehension of the process of fractionation during adsorption can provide valuable insights into the utilization of isotope tracer approaches. ,, …”

Removal of antimony from model solutions, mine effluent, and textile industry wastewater with Mg-rich mineral adsorbents

“…Sb removal from contaminated waters has been studied using chemical precipitation (Enders and Jekel 1994b ; Multani et al 2017 ; Parker et al 1979 ), coagulation–flocculation (Djuvfelt 2014 ; Enders and Jekel 1994a ; Guo et al 2009 ), biological treatment (Sun et al 2016 ; Zhang et al 2016 ), ion exchange (Parker et al 1979 ), or reverse osmosis (Kang et al 2000 ). Adsorption has also received considerable attention (Cheng et al 2022 ; Dong et al 2022 ; Lee et al 2018a , 2018b ; Ungureanu et al 2015 ; Xie et al 2022 ; Yan et al 2022 ; Zhang et al 2019 ). Oxidation of Sb(III) prior to treatment is beneficial, as Sb(V) is generally more efficiently removed and less toxic.…”

2-Mercaptobutanedioic-Acid-Modified AlGaN/GaN High Electron Mobility Transistor With Folded Gate for Fe3+ Detection

“…centrations, play a crucial role in maintaining normal physiological processes and healthy development in the human body, excessive intake or accumulation of these elements would cause irreversible damage to the human body [5]. When the human body accumulates iron ions (Fe 3+ ) at levels deviating from the normal range, it can lead to functional disorders and various diseases, such as heart failure, hemosiderosis, and neurodegeneration [6][7]. Currently, mature detection methods for Fe 3+ require large equipment and complex experimental procedures in a laboratory environment, as well as specialized training for the personnel [8][9].…”