Insight into mechanisms of fluoride removal from contaminated groundwater using lanthanum-modified bone waste

Abstract

The current worldwide issue of fluoride contamination in groundwater has resulted in an increased demand for efficient adsorbents. Meanwhile discard and landfill of bone waste has led to environmental pollution. In order to achieve bone waste recycling and enhance the efficiency of fluoride removal, a lanthanummodified bone waste (LBW) composite was synthesized and tested to remove fluoride from

Synthesis of La2(C2O4)3 nanoprisms decorated with Fe3O4@m(ZrO2‐CeO2) nanospheres and their application for effective fluoride removal

“…and the related factors are given in Table . In terms of the International Union of Pure and Applied Chemistry (IUPAC) classication, Fe 3 O 4 @m(ZrO 2 ‐CeO 2 ) shows a type IV isotherm with H 3 ‐type hysteresis loop, indicating the mesoporous structure in Fe 3 O 4 @m(ZrO 2 ‐CeO 2 ) . Figure (b) indicates a narrow pore size distribution of Fe 3 O 4 @m(ZrO 2 ‐CeO 2 ) at around 2.7 nm.…”

A nanofibrous membrane fluorescent sensor for fluoride ions prepared by electrospinning and host-guest interaction

“…Moreover, Fis also widely used in industrial production，such as manufacture of plastics and rubber, the production of rodenticide pharmaceutical and pesticide [1]. The Fcontent in human body is about 2.6 g, and 95% of them are distributed in bones and teeth to enhance their structure stability, in the second distributed in hair and nails，and microscale in organs [2]. The adsorption of Fin the human body is mainly in water，food and skin, the soluble Fin drinking water is almost absorbed by the small intestine and stomach, and the absorption rate of Fin food is about 50%, moreover, Fcan be absorbed in human body by skin and transported to bone through blood [3,4].…”

Advanced defluoridation from industrial wastewater with high‐concentration fluoride through a novel three‐stage treatment process

“…silicate, sulphate, bicarbonate and phosphate) hinder its adsorption capacity (Tang et al, 2009). Adsorbents modified with rare earth elements such as Zr, La and Ce were investigated to improve adsorption capacity (Ghosh et al, 2014; He et al, 2019; Wang et al, 2017). However, the rare earth immobilized on adsorbent may leach into the solution, resulting in the second pollution and the toxicant to human health (Zheng et al, 2018).…”