latest news: in Spain
Showing 6 of 6 Articles:
Hydrogen fluoride concentrations in ambient air of an urban area based on the emissions of a major phosphogypsum deposit (SW, Europe)
Highlights Several HF impacts have been recorded and associated to the PG deposit. Impacts are more numerous in winter but more concentrated in the warm season. PG deposit is susceptible to emit HF through its solid and liquid phases. The emission factors of the brines, settled in 2.7 kg/ha day, is the most important. Abstract […]Spain Phosphate Industry
Long term geochemical variation of brines derived from a major phosphogypsum pond of SW Europe.
Highlights Geochemical variations of brines depend on dilution and evaporation. The recharge with brines generated in the PG stack produces dilution. Highest concentrations are shown in summer, except for F?. The removal of layered salts and brines in summer should be considered. Abstract The chemical evolution of brines resulting from an inactive phosphogypsum pond derived […]Spain Phosphate Industry
The geochemical evolution of brines from phosphogypsum deposits in Huelva (SW Spain) and its environmental implications.
Highlights The brines in PG ponds are extremely enriched in F, Na, Cl, Ni, Cd, Mn, Cu, Zn, and U. Brine composition is strongly seasonal and spatial dependent. The enrichment in aged brines is caused by precipitation and re-dissolution processes. Brine evaporation produces multi-layered trace-element rich precipitates. Abstract The present study focuses on the geochemistry […]Spain Phosphate Industry
Fluoride removal from natural volcanic underground water by an electrocoagulation process: Parametric and cost evaluations.
Highlights Use of electrocoagulation technique for the remediation of fluoride in groundwater. Performance intensification ways and cost evaluation are comprehensively discussed. Operating conditions have been optimized in batch and continuous-flow regimes. Percentage of fluoride removal varied between 68.9 and 84.7%. Final fluoride concentration below the legal limit of 1.5 mg/L in all cases. Abstract Excessive […]Spain Volcanoes Water Treatment
Cepsa to convert alkylation unit
Honeywell has announced that Cepsa will convert an alkylation unit using hydrofluoric acid to Honeywell UOP’s solid bed Detal-Plus™ technology at its refinery in San Roque, Spain. The unit produces linear alkylbenzene (LAB), which is used to make a variety of different detergent formulations, including biodegradable household detergents. Honeywell will provide catalysts and adsorbents, basic […]Spain Chemical Industry
Guia de Isora area of Tenerife: Don’t drink the water
Hundreds of households in the Guia de Isora area of Tenerife were affected by a water warning. Parents were advised not to allow children up to the age of eight to either drink the local water or eat foods either prepared or cooked in it. The alert, involving the Fonsalia and Alcalá area, came as […]Spain