Geological Differentiation of Groundwater Threshold Concentrations of Arsenic, Vanadium and Fluorine in El Bajio Guanajuatense, Mexico

Rodríguez, Ramiro; Morales-Arredondo, José Iván; Rodríguez, Isaías

doi:10.22201/igeof.00167169p.2016.55.1.1708

Cited by 10 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Guanajuato State, Central Mexico, groundwater is the only source of drinking water for a number of cities, and arsenic concentrations higher 2), 261-299. DOI: 10.24850/j-tyca-14-02-07 than the limit of the Mexican Standard for drinking water, 0.025 mg/l, can be found in some drinking water wells (Rodríguez, Morales-Arredondo, & Rodríguez, 2016).…”

Section: Introductionmentioning

confidence: 98%

Assessment of two low-cost geological materials as adsorbents for arsenic

Coreño-Alonso

González-Gómez²,

Coreño-Alonso³

2023

Tecnol. cienc. agua

View full text Add to dashboard Cite

Two easily accessible local materials, kaolin, and sediments from the reservoir of a dam, were evaluated to compare their efficiencies as adsorbents for As. The kaolin sample was composed mainly by kaolinite and quartz, while the sediments contained illite, montmorrillonite and quartz. Also, iron, calcium and magnesium minerals were present as minor components. The adsorption experiments were performed using batch equilibrium techniques. The samples were chemically treated using piranha solution, and trimesic acid, to study their effects on the adsorption capacity. The piranha treatment seems to be a good alternative to improve the adsorption capacity of kaolin. However, the intact reservoir sediments showed higher efficiencies than the intact or treated kaolin. On the other hand, the initial uptake of trimesic acid showed only a slightly positive effect on the arsenic uptake of the reservoir sediments. Most of the arsenic adsorption seems to be due to the finest particles of the sediments, composed mainly of iron minerals, while the organic matter contributes scarcely to the arsenic uptake. The influences of pH, contact time, initial arsenic concentration, and chemical treatments were studied. Freundlich and Dubinin-Kaganer-Radushkevich isotherm models were used to evaluate the arsenic uptake capacity of the intact and trimesic acid treated reservoir sediments. Maximum arsenic adsorption was completed almost within five hours of reaction, reaching a measured sorption capacity of 137 mg/kg for the intact sediments, slightly lower than for the trimesic treated sediments.

show abstract

Section: Introductionmentioning

confidence: 98%

Assessment of two low-cost geological materials as adsorbents for arsenic

Coreño-Alonso

González-Gómez²,

Coreño-Alonso³

2023

Tecnol. cienc. agua

View full text Add to dashboard Cite

show abstract

“…Considering that water that is pumped at greater depths is mineralized mostly because of the residence time and interaction with geological materials, it is essential to characterize groundwater to detect hydrogeochemical processes, changes in its chemical composition, and the mixing of different groundwater sources via local or regional flows [9,10]. Arsenic and fluoride have been reported in some areas of Bajío Guanajuatense [11][12][13]. The origin, relationship to geological features, or hydraulic connections between aquifers have only been explored in a few rare instances despite reports of high amounts of arsenic in groundwater used by more than 1.5 million people [14].…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical Characterization of Groundwater at the Boundaries of Three Aquifers in Central México

Ibarra-Olivares,

Miranda-Avilés,

Ramos-Leal

et al. 2023

Water

View full text Add to dashboard Cite

This study investigates the natural hydrogeochemical mechanisms that govern groundwater chemistry at the margins of the Silao-Romita, Valle de León, and La Muralla aquifers in Mexico’s “Bajío Guanajuatense”. The wells of the La Muralla aquifer have temperatures ranging from 25 to 45 °C, while in the valleys, the temperatures range from 25 to 29 °C. In the Sierra de Guanajuato recharge zone, the thermal spring registers 95 °C. High Na concentrations (125 to 178 mg/L) are measured due to thermalism. One sample includes 316 mg/L of SO4, which is related to a potential gypsum zone. Three hydrogeochemical facies are identified (Ca-Mg HCO3, Na-Ca-HCO3, and Na-HCO3). The hydrogeochemical characterization and processes imply hydraulic linkage via regional thermal flows enhanced by faults and the mixing of local flow waters with intermediate flows. The isotopic results indicate that part of the groundwater volume has been exposed to local evaporation processes due to the presence of surface water bodies and irrigation returns. The highest isotopic enrichment is observed near or in the recharge regions. In contrast, the most depleted zones are in the valleys, where there is a more significant interaction with the rock and a longer residence time, implying a mixture of local water flows with deeper or intermediate flows, which, when combined with water geochemistry, indicates a connection between the aquifers studied. The Kruskal–Wallis variance tests, used to compare the differences between aquifers, show that the Valle de León aquifer has more significant differences with respect to the Silao-Romita and La Muralla aquifers. This study’s findings are essential for one of central Mexico’s most populous and economically active areas.

show abstract

“…Groundwater background values in Guanajuato State were evaluated, and the arsenic values from sample wells were in the range of 0.068–0.777 mg/L. These values are due to geogenic sources containing volcanic rocks, specifically rhyolites, which have a presence of As and F in the hot deep flow [ 10 ]. Three Yaqui villages in southern Sonora, Mexico, have been studied for arsenic exposure through drinking water.…”

Section: Introductionmentioning

confidence: 99%

The Development of Fe3O4-Monolithic Resorcinol-Formaldehyde Carbon Xerogels Using Ultrasonic-Assisted Synthesis for Arsenic Removal of Drinking Water

Khamkure,

Gamero-Melo,

Garrido-Hoyos

et al. 2023

Gels

View full text Add to dashboard Cite

Inorganic arsenic in drinking water from groundwater sources is one of the potential causes of arsenic-contaminated environments, and it is highly toxic to human health even at low concentrations. The purpose of this study was to develop a magnetic adsorbent capable of removing arsenic from water. Fe3O4-monolithic resorcinol-formaldehyde carbon xerogels are a type of porous material that forms when resorcinol and formaldehyde (RF) react to form a polymer network, which is then cross-linked with magnetite. Sonication-assisted direct and indirect methods were investigated for loading Fe3O4 and achieving optimal mixing and dispersion of Fe3O4 in the RF solution. Variations of the molar ratios of the catalyst (R/C = 50, 100, 150, and 200), water (R/W = 0.04 and 0.05), and Fe3O4 (M/R = 0.01, 0.03, 0.05, 0.1, 0.15, and 0.2), and thermal treatment were applied to evaluate their textural properties and adsorption capacities. Magnetic carbon xerogel monoliths (MXRF600) using indirect sonication were pyrolyzed at 600 °C for 6 h with a nitrogen gas flow in the tube furnace. Nanoporous carbon xerogels with a high surface area (292 m2/g) and magnetic properties were obtained. The maximum monolayer adsorption capacity of As(III) and As(V) was 694.3 µg/g and 1720.3 µg/g, respectively. The incorporation of magnetite in the xerogel structure was physical, without participation in the polycondensation reaction, as confirmed by XRD, FTIR, and SEM analysis. Therefore, Fe3O4-monolithic resorcinol-formaldehyde carbon xerogels were developed as a potential adsorbent for the effective removal of arsenic with low and high ranges of As(III) and As(V) concentrations from groundwater.

show abstract

Geological Differentiation of Groundwater Threshold Concentrations of Arsenic, Vanadium and Fluorine in El Bajio Guanajuatense, Mexico

Cited by 10 publications

References 19 publications

Assessment of two low-cost geological materials as adsorbents for arsenic

Assessment of two low-cost geological materials as adsorbents for arsenic

Hydrogeochemical Characterization of Groundwater at the Boundaries of Three Aquifers in Central México

The Development of Fe3O4-Monolithic Resorcinol-Formaldehyde Carbon Xerogels Using Ultrasonic-Assisted Synthesis for Arsenic Removal of Drinking Water

Contact Info

Product

Resources

About