Work

Synthesis of Calcium Arsenoalginate Form Elimination the Arseniate Ions in Contaminated Water

Year: 2007

Type: article

Abstract: Synthesis of calcium arsenoalginate was optimized using common sodium alginate, CaCl2 and \nNaH2AsO4 which brought the arsenic. In order to evaluate the co-precipitation efficiency and elimination of arsenic, \nseveral concentrations of As, ranging from 20 to 1000 µg.L-1 was tested including real contaminated water \ncontaining 480 µg.L-1of arsenic. Optimized results, by means of factorial design matrix, pointed out the best \nsynthesis conditions; sodium alginate concentration of 1.0 g.L-1, pH 6, CaCl2 concentration between 400-500 mgL-1 \nand room temperature. Re-dissolution of the precipitates is promoted than sedimentation when temperature is greater \nthan room temperature. The precipitates are crystalline solids that in future studies will be characterized more \nextensively in order to elucidate potential applications. In contaminated water the arsenic was eliminated with an \nefficiency of 96% these result allows to consider that is possible to reduce arsenic concentration until levels \naccording to Mexican standard.

Source: DYNA

Authors: Francisco Prieto García, Otazo Sánchez, Alberto José Gordillo Martínez, María A. Méndez Marzo, F. Sánchez-De Jesús

Institution: Universidad Autónoma del Estado de Hidalgo

Language: English

Topic: Arsenic contamination and mitigation

Subfield: Environmental Chemistry

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: diamond

OpenAlex ID: W1846178821

FWCI:

Cites: 7

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Related to: 10