Highlights • Synthesising mesoporous alumina with secondary aluminum ash for the first time. • Modification with citric acid increased hydroxyl radical on the surface of the material. • The removal efficiency remains above 98.20% after 5 cycles. • The maximum adsorption capacity for fluoride ions was 117.98 mg g-1. Abstract Longitudinal loading of citric acid […]
News Archive
Welcome to the Fluoride Action Network News Archive. The FAN News Archive serves as an historical repository for fluoride news stories, positive or negative. Since FAN catalogs all news stories on fluoride, our news section remains a reliable database of all published fluoride news.
Our news database is categorized by country, state/province, and industry. This collection of articles is constantly being updated with the most recent global news on fluoride-related issues and events.
Quality assessment and prediction of municipal drinking water using water quality index and artificial neural network: A case study of Wuhan, central China, from 2013 to 2019.
Abstract The sanitary security of drinking water is closely related to human health, but its quality assessment mainly focused on limited types of indicators and relatively restricted time span. The current study was aimed to evaluate the long-term spatial-temporal distribution of municipal drinking water quality and explore the origin of water contamination based on multiple […]
Enrichment mechanisms for the co-occurrence of arsenic-fluoride-iodine in the groundwater in different sedimentary environments of the Hetao Basin, China
Highlights Sedimentary environment is the key factor to control the As, F, I distribution. Four sedimentary zones were divided on the basis of Clay-sand ratio, clay layers and terrain slope. High As and I is distributed in paleochannel zone with strong reducing environment. High F comes from the fluorine-rich bedrock surrounding the basin. Abstract Abnormal […]
Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures
Highlights The abundance and spatial distribution of F– in the mine water of the Shendong mining area were determined. The hydrogeochemical behaviours and formation mechanisms that further elevate F– levels in mine water during mining activities were evaluated. The hydrogeochemical processes of mine water at high F– concentration using stable isotopes (34SSO4, 18OSO4,18OH2O, and D) […]
Hydro-geochemical control of high arsenic and fluoride groundwater in arid and semi-arid areas: A case study of Tumochuan Plain, China
Highlights The enrichment of arsenic in groundwater is closely related to salt content of aquifer medium. Reduction environment caused by high organic matter content is key to arsenic enrichment. Alkaline environment has great influences on the enrichment of fluoride and arsenic compounds. Dissolution balance between carbonate minerals and fluorite controls the content of fluoride. Abstract […]
Across China: Easy access to clean water sweetens bitter memories of rural Chinese families
BEIJING, Feb. 10 (Xinhua) — Fu Shuming has made a habit of smiling conservatively due to the awkwardness he feels about his stained teeth, which he has had for decades due to a lack of access to clean water in his village in north China. “People in our village are often unwilling to smile from […]
Fluoride contamination, spatial variation, and health risk assessment of groundwater using GIS: a high-density survey sampling in Weifang City, North China
Abstract The present study, with the aid of GIS, utilizes high-density groundwater (GW) sampling data (1398 samples) to analyze the spatial variation characteristics of GW fluoride in Weifang City (WFC), and evaluate the health risks associated with drinking water routes. The concentration of fluoride in the GW of WFC is observed to be between 0.08 […]
Groundwater quality assessment and hydrogeochemical processes in typical watersheds in Zhangjiakou region, northern China
Abstract It is of significance to elucidate the groundwater quality and hydrogeochemical processes for sustainable utilization of groundwater resources in water shortage regions. A total of 256 groundwater samples were collected in typical watersheds in Zhangjiakou, northern China. The hydrochemical parameters, conventional ions, and trace elements were measured, and ?D and ?18O data were collected […]
Hydrogeochemical evidence for fluoride behavior in groundwater and the associated risk to human health for a large irrigation plain in the Yellow River Basin.
Highlights Infiltration of irrigation water diluted groundwater fluoride. Factors controlling fluoride were distinct along the groundwater flow paths. Health risks of fluoride through drinking water were increased with decreasing age. Abstract A hydrochemical analysis of groundwater (GW) was conducted to investigate the factors controlling GW fluoride (F) in a large irrigation plain in the Yellow […]
Environmental Safety Analysis of Red Mud-Based Cemented Backfill on Groundwater
Excerpt: 1. Introduction As the second most important metal after steel, aluminum and its alloys are widely used in construction, transportation, electrical appliances, machinery, and other industries due to their excellent properties [1]. At present, 95% of the world’s aluminum companies use the Bayer process to treat bauxite ore in order to produce alumina and […]