Uranium in well drinking water of Kabul, Afghanistan and its effective, low-cost depuration using Mg-Fe based hydrotalcite-like compounds

Autor: Mohammad Daud Azimi, Masao Maeda, Muhammad Dawood Shah, Tomomi Ohtsuka, Md. Zahirul Hoque, Said Hafizullah Fayaz, Masashi Kato, Shoko Ohnuma, Nobuyuki Hamajima, Masafumi Yoshinaga
Rok vydání: 2016
Předmět:
inorganic chemicals
Environmental Engineering
Magnesium Hydroxide
Environmental remediation
Health
Toxicology and Mutagenesis
Iron
Water Wells
chemistry.chemical_element
Aluminum Hydroxide
02 engineering and technology
010501 environmental sciences
01 natural sciences
Arsenic
Water Purification
Chromium
Antimony
Water Supply
Water Quality
Environmental Chemistry
Humans
Magnesium
Pakistan
Environmental Restoration and Remediation
0105 earth and related environmental sciences
Cadmium
Drinking Water
Radiochemistry
technology
industry
and agriculture
Public Health
Environmental and Occupational Health
Afghanistan
Barium
General Medicine
General Chemistry
Uranium
021001 nanoscience & nanotechnology
Pollution
Mercury (element)
chemistry
0210 nano-technology
Water Pollutants
Chemical
Environmental Monitoring
Zdroj: Chemosphere. 165
ISSN: 1879-1298
Popis: Toxic elements in drinking water have great effects on human health. However, there is very limited information about toxic elements in drinking water in Afghanistan. In this study, levels of 10 elements (chromium, nickel, copper, arsenic, cadmium, antimony, barium, mercury, lead and uranium) in 227 well drinking water samples in Kabul, Afghanistan were examined for the first time. Chromium (in 0.9% of the 227 samples), arsenic (7.0%) and uranium (19.4%) exceeded the values in WHO health-based guidelines for drinking-water quality. Maximum chromium, arsenic and uranium levels in the water samples were 1.3-, 10.4- and 17.2-fold higher than the values in the guidelines, respectively. We next focused on uranium, which is the most seriously polluted element among the 10 elements. Mean ± SD (138.0 ± 1.4) of the 238U/235U isotopic ratio in the water samples was in the range of previously reported ratios for natural source uranium. We then examined the effect of our originally developed magnesium (Mg)-iron (Fe)-based hydrotalcite-like compounds (MF-HT) on adsorption for uranium. All of the uranium-polluted well water samples from Kabul (mean ± SD = 190.4 ± 113.9 μg/L; n = 11) could be remediated up to 1.2 ± 1.7 μg/L by 1% weight of our MF-HT within 60 s at very low cost (
Databáze: OpenAIRE
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