The main purposes of this research work were to realize the potential sludge valorization by converting into adsorbents and investigate performance sludge-based for rare earth elements (REEs) recovery from dilute aqueous solutions. Hydrochloric acid Fenton reagents employed as pretreatment procedures enhance surface area adsorption yield. Following this, alginate beads prepared using HCl treate...

Abstract Rare earth elements (REEs) are often referred to as the industrial vitamins and key drivers of industry 4.0 revolution. The current global supply chain REEs for green high-tech applications with more than 220 metric kilotons per year involves a huge environmental impact (backpack) well piling up radioactive by-products about 1.5 times amount produced. E-wastes municipal solid waste str...

Rare earth elements (REEs) have undergone a steady spread in several industrial, agriculture and medical applications. With the aim of exploring a sensitive and reliable indicator of estimating exposure level to REEs, a simple, accurate and specific ICP-MS method for simultaneous direct quantification of 15 REEs ((89)Y, (139)La, (140)Ce, (141)Pr, (146)Nd, (147)Sm, (153)Eu, (157)Gd, (159)Tb, (16...

Neodymium (Nd) potentially pollutes environment for its wide usage in agriculture and industry. In this study, the chemical forms of Nd effect on rice shoots were studied after seedlings exposed with 0, 1, 10, 100 and1000 μM Nd. The higher concentration inhibited shoot growth, but lower induced growth. Six different present major insoluble phosphate oxalate content was further detected soluble ...

This review explores the potential of separating and recycling rare earth elements (REEs) from different energy conversion systems, such as wind turbines, electric vehicles batteries, or lighting devices. The REEs include 17 (with global production 242 kilometric tons in 2020) that can be found abundantly nature. However, they are expensive complicated to extract separate with many environmenta...

Fish can be highly vulnerable to environmental pressures because they are exposed oxidative stressors in the aquatic environment. Such affect levels of antioxidant biomarkers against reactive oxygen species (ROS). With this study we investigated stress ecology Danube barbel (Barbus balcanicus) from Barbucina creek (northeast Italy), a watercourse Collio winegrowing district. To do this, superox...

Tailings from inactive uranium mine sites represent a potential secondary source of rare earth elements (REEs). For this study, two tailings (DT and RAT) restored in Ontario, Canada, were used. Bioleaching experiments conducted with mix native sulfur- iron-oxidizing bacteria to test the solubilization REEs, U Th at different temperatures (20, 30 40 °C). The selective recovery REEs bioleaching s...

Phosphatic clay is a waste material produced during the beneficiation of phosphate ore, which likely poses severe environmental problems. In this study, phosphatic containing 258 ppm total rare earth elements (REEs) was used as feedstock for REE recovery. By reacting with 0.1 M HCl at 75 °C 3 h, around 36 % light REEs and 65 heavy were extracted from raw material. However, after calcination pre...

A direct sampling with organic solvent extracts for simultaneous multi-element determination implemented with inductively coupled plasma atomic emission spectrometry (ICP-AES) associated with a flow injection liquid-liquid extraction (FI-LLE) sample preconcentration method was studied. The "robustness" of the plasma discharge with tributyl phosphate (TBP) loading was diagnosed by using the Mg I...