An Electrochemical Oxidation and Intercalation Strategy for Iodide Removal Using LDHs.

Radioactive iodide harms the ecosystem and human health, necessitating its immobilization to mitigate aquatic iodine pollution. Layered double hydroxides (LDHs), a family of 2D clays with intercalated anions and controllable interlayer structures, are technologically and economically viable adsorbents to eliminate various anion pollutants. However, LDHs exhibit an extremely low affinity toward iodide species.

Application of a Core-Shell Structure Nano Filtration Control Additive in Salt-Resistant Clay-Free Water-Based Drilling Fluid.

When drilling into a reservoir, the drilling fluid containing bentonite is prone to solid phase invasion, causing serious damage to the reservoir, and the conventional API barite suspension stability is poor, which makes it easy to cause sedimentation and blockage. Therefore, in order to avoid accidents, we use ultrafine barite to obtain a good suspension stability. More importantly, the method of modifying zwitterionic polymers on the surface of nano-silica is used to develop a temperature-resistant and salt-resistant fluid loss reducer FATG with a core-shell structure, and it is applied to ultra-fine clay-free water-based drilling fluid (WBDF).

Simultaneous removal of arsenic and antimony from mining wastewater using granular TiO: Batch and field column studies.

Coexisting arsenic (As) and antimony (Sb) in mining wastewater is a common and great concern. On-site simultaneous removal of As and Sb from mining wastewater was achieved by using a reusable granular TiO column in this study. To evaluate the accuracy of the scale-up procedure, As and Sb adsorption from wastewater was studied in both large (600g TiO) and small columns (12g TiO) based on the proportional diffusivity rapid small-scale column tests (PD-RSSCTs) design.

Antimony exposure and speciation in human biomarkers near an active mining area in Hunan, China.

Antimony (Sb) exposure threatens human health. To identify human biomarkers for Sb exposure, we analyzed 480 environmental samples from an active Sb mining area in Hunan, China. Elevated Sb concentrations exceeding the reference level were detected in drinking water (70% of n = 83 total samples), foods (80%, n = 188), urine (95%, n = 63), saliva (44%, n = 48), hair (80%, n = 51) and nails (83%, n = 47).