Arsenic-contaminated groundwaters remediation by nanofiltration

Figoli, Alberto; Fuoco, Ilaria; Apollaro, Carmine; Chabane, Mustapha; Mancuso, Raffaella; Gabriele, Bartolo; Rosa, R. De; Vespasiano, Giovanni; Barca, Donatella; Criscuoli, A.

doi:10.1016/j.seppur.2019.116461

Cited by 58 publications

(21 citation statements)

References 20 publications

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“…The membrane processes are considered an interesting alternative to the conventional methods considering their many benefits, but few are the applications on natural Ascontaminated groundwaters. Figoli et al [89,90] analyzed the efficiency of two commercial nanofiltration (NF) membranes in terms of As rejection and water production, also as function of the feed composition by testing three contaminated groundwaters with As contents ranging from 59 to 435 µg L −1 . The authors compared their satisfactory results with those reported in the literature providing a useful data collection to identify suitable NF membranes to be applied in similar contaminated sites.…”

Section: Removal Of As From Watermentioning

confidence: 99%

The Status of Arsenic Pollution in the Greek and Cyprus Environment: An Overview

Golfínopoulos

Varnavas

Alexakis

2021

Water

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This study presents an overview about the arsenic (As) contamination and its sources in two European countries. Arsenic is a highly toxic element in its inorganic form and it is carcinogenic to human seven in low concentrations. The occurrence of As in surface water, stream and marine waters, groundwater, bottled water, sediment, soil, mines, and seafood, its environmental origin, and its impacts on human health are discussed. The classes of Geoaccumulation Index for As in Greece ranges from practically uncontaminated to extremely contaminated, and in Cyprus varies between practically uncontaminated and heavily contaminated. In many cases, the As contamination reaches very high concentrations and the impacts may be crucial for the human health and ecosystems. Physicochemical properties, regional climate and geological setting are controlling the occurrence and transport of As. In Greece and Cyprus, the geology, lithology, and ore-deposits are the most important factors for the variation of As contents in water, soil, and sediment. The dominant As species are also determined by the location and the redox conditions. The findings of this paper may be useful for scientists and stakeholders monitoring the studied areas and applying measures for protection of the human and terrestrial ecological receptors (plants, avian, mammals).

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Section: Removal Of As From Watermentioning

confidence: 99%

The Status of Arsenic Pollution in the Greek and Cyprus Environment: An Overview

Golfínopoulos

Varnavas

Alexakis

2021

Water

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“…In the context of rural supplies, removing arsenic at the local scale is often the only option to meet the WHO and national acceptance thresholds (10 µg/L) [48]. This hints at the need to develop methods that can be implemented on the ground [48][49][50]. Priority chemical contamination remains a major challenge for the future.…”

Section: Discussionmentioning

confidence: 99%

Mapping Ground Water Access in Two Rural Communes of Burkina Faso

Díaz-Alcaide

Sandwidi

Martínez‐Santos

et al. 2021

Water

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Granting safe water access worldwide is a major objective of the Sustainable Development Goals. Water access is a manifold concept that encompasses collection time, distance from the household, water quality, affordability, and reliability of water sources, among other factors. GIS-based methods can be particularly useful in improving water access estimates, particularly in rural areas of developing countries. Based on an extensive water point database (n = 770), this paper explores the main challenges involved in mapping water access in two rural communes of Burkina Faso. Water access is estimated in terms of coverage per surface area. Coverage is filtered into four distinct categories of improved water sources, namely existing infrastructures, operational infrastructures, permanent infrastructures, and permanent infrastructures that provide safe water. The outcomes suggest that the study area is better endowed with water access than rural Burkina Faso and the remainder of the African continent, although there are important questions regarding groundwater quality. The outcomes highlight the conceptual differences between coverage and access, as well as some of the practical difficulties involved in estimating water access beyond standard ratios. The shortcomings include the absence of continuous monitoring of infrastructure functionality and water quality, as well as water affordability, among others. Enhancing national borehole databases with items aligned with the United Nations’ definition of water access is recommended.

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“…A total of 62 water samples from the Pollino National Park area were collected during the present study and analyzed for major components. The sampling methodologies were already described by [61][62][63][64][65][66]; however, a brief description is reported here. In the field, the physicochemical parameters like temperature, pH, oxidation-reduction potential (Eh), and electrical conductivity (EC) were determined by using a previously calibrated multiparametric probe (Hanna Instruments HI-9828) whereas total alkalinity was determined by acidimetric titration using HCl 0.05 N as the titrating agent and methyl orange as the indicator.…”

Section: Methodsmentioning

confidence: 99%

Geochemical Modeling of Water-Rock Interaction Processes in the Pollino National Park

Apollaro

Fuoco

Bloise³

et al. 2021

Geofluids

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This work is aimed at reconstructing the water-rock interaction processes controlling the geochemical characteristics of the shallow or relatively shallow groundwaters of the Pollino National Park, based on the data acquired for 105 water samples from local springs. Reaction path modeling of rock dissolution was carried out in a purely stoichiometric mode for the main lithotypes cropping out in the study area, that is, limestone, Mg-limestone, dolomite, serpentinite, Al-silicate fraction of calcschist, and carbonate fraction of calcschist. Reaction path modeling was carried out in a purely stoichiometric mode, considering the rocks of interest as materials of known stoichiometry and unknown thermodynamic properties. Calculations were carried out assuming a closed system for secondary solid phases whereas an open system was assumed for gases, O2(g) and CO2(g). Comparison of the results of geochemical modeling and the analytical data acquired for the groundwaters of the Pollino National Park shows that concentrations of major solutes, SiO2, Li, Al, and Fe of the different chemical types of waters, are explained by the dissolution of pertinent lithotypes. Moreover, the detected concentrations of Al, Cl, F, NO3, and SO4 are within the threshold values recommended by WHO.

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Arsenic-contaminated groundwaters remediation by nanofiltration

Cited by 58 publications

References 20 publications

The Status of Arsenic Pollution in the Greek and Cyprus Environment: An Overview

The Status of Arsenic Pollution in the Greek and Cyprus Environment: An Overview

Mapping Ground Water Access in Two Rural Communes of Burkina Faso

Geochemical Modeling of Water-Rock Interaction Processes in the Pollino National Park

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