Significantly enhanced alkaline stability and cyanide suppression of Prussian blue analogues using montmorillonite for high-performance cesium removal

Engineering a defect-rich Prussian blue analog composite for enhanced Cs+ removal performance

“…137 Cs in water bodies can cause various serious public health problems, including metabolic diseases, biological malformations, and even cancers because of its longer half-life and strong gamma-ray-emitting ability. 1,2 Especially, with the discharging radioactive wastewater from the Fukushima nuclear meltdown, 3 the removal of 137 Cs from wastewater has become a more urgent challenge for human health and the development of society. On account of the complex composition of wastewater as well as the low 137 Cs + concentration, adsorption has been extensively employed because of their satisfactory adsorption performance, high selectivity, low cost and easy operation.…”

Recent Advances in the Study of Trivalent Lanthanides and Actinides by Phosphinic and Thiophosphinic Ligands in Condensed Phases

“…With the growth of nuclear power generation, a large amount of nuclear waste needs to be disposed of [1,2]. The disposition of high-level waste in the reprocessing of spent fuel is key in the sustainable development of nuclear energy.…”

Phosphate-rich cellulose beads for efficient cesium extraction from aqueous solutions: a novel approach for cellulose utilization

“…A series of CBP extraction experiments at different pH levels were performed to investigate the effect of pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12) on the extraction process. As shown in Fig.…”

“…Moreover, the adsorption capacity of the CBPs surpassed or was comparable to that of various previously reported inorganic adsorbents too, such as magnetic bentonite-based beads (Bn-CTS), mesoporous magnesium phosphate (MgP-MS), Prussian blue analogs (PB-PAN), and ammonium phosphomolybdate (mag-AMP). In addition, the CBPs also had high adsorption capacity over a broad pH range (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12), as well as outstanding reusability. The comparison above further suggested the efficient cesium extraction performance of the CBPs.…”

“…Adsorption is considered one of the most efficient technologies for extracting Cs from aqueous media because of the limitations of the low Cs concentration and complex composition of aqueous solutions. 6 Various inorganic metal adsorbents such as ammonium molybdophosphate, Prussian blue analogs, zinc phosphate, and tin sulfides have been widely used for Cs extraction; 7–10 however, most these adsorbents suffer from some major limitations, such as (i) a microcrystalline structure that causes difficulties in the post-separation process; (ii) their decomposition in acidic or basic conditions, leading to heavy metals pollution; and (iii) a high synthesis cost. 11 Based on the Lewis acid–base theory, soft acidic Cs + has a relatively strong affinity for soft basic ions, including –COO − , –PO 4 3− , –PhO − , and –SO 3 − .…”