Fluoride in Tunisian Drinking Tap Water

Tunis,; Tunisia,

doi:10.4236/jwarp.2015.711070

Cited by 9 publications

(3 citation statements)

References 4 publications

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“…Fluoride in the environment is a serious problem worldwide. Environmental fluoride-related health problems are faced in Tunisia [9,13], Turkey [21], and more than 20 other countries around the world [7]. The application of DCPD to tackle polluted surface and groundwater could be an interesting possibility in the near future.…”

Section: -1mentioning

confidence: 99%

Properties of sludge generated by the treatment of fluoride-containing wastewater with dicalcium phosphate dihydrate

Tafu

Arioka

Takamatsu

et al. 2016

Euro-Mediterr J Environ Integr

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Fluoride-containing wastewater is discharged from various industrial sites, including semiconductor, plating, and metal-treatment plants. To remove the fluoride, we treated wastewater with dicalcium phosphate dihydrate (DCPD, CaHPO 4 Á2H 2 O) to form fluorapatite [Ca 10 (PO 4 ) 6 F 2 ] crystals. We investigated the fluoride removal efficiency and the properties of the resulting sludge. For comparison, we also treated wastewater using conventional aluminum coprecipitation. The DCPD used in this study was a by-product of the gelatin industry. Nanoscale precursor particles were induced on the DCPD by treatment with warm water. After treatment of fluoridecontaining wastewater in batch experiments, the amount, particle size distribution, settleability, and filterability of the resulting sludge were measured to assess the usability of DCPD. We found that the amount of chemical additives required for the DCPD method was less than that for the conventional method. Additionally, the amount of sludge produced using the DCPD method was small and the final fluoride concentration was below 5 mg L -1 . In settleability tests, the sludge produced by the DCPD method was precipitated within 10 min. In filterability tests, most DCPD sludge was separated within 5 min. The settleability and filterability of sludge from the DCPD method were better than those of the conventional method. The release of fluoride from the DCPD sludge was below the levels stipulated by Japanese soil pollution regulations. Consequently, the sludge was considered unlikely to cause soil pollution, thereby facilitating landfill management. We concluded that DCPD can be used effectively to treat fluoride-containing wastewater and that the resulting sludge is unlikely to cause environmental damage.

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Section: -1mentioning

confidence: 99%

Properties of sludge generated by the treatment of fluoride-containing wastewater with dicalcium phosphate dihydrate

Tafu

Arioka

Takamatsu

et al. 2016

Euro-Mediterr J Environ Integr

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“…In contrast to another region in the west of Libya, Al-Fateh University of Tripoli attributed the increased incidence of fluorosis to the dominant consumption of ground water, in which fluoride content found to be 5 ppm. 11 A much higher concentrations of fluoride in the ground water was found in cities of southern Libya; where the Fluoride contents documented as 8.8, 4.7, 7.2, 4.2 and 6.7 ppm. for Mourzouk, Qatron, AL-Shati -Barak, Obari, and Sebha respectively.…”

Section: Discussionmentioning

confidence: 93%

Fluoride Concentration in Drinking water in The Libyan City of Zliten: Dental Perspective

Swisialgdar,

Gaber,

Faraj Abogamiza

2022

Libyan J Dent

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Background: Having optimally fluoridated drinkable water supply is important to reduce the prevalence of both dental decay and dental fluorosis. This research aimed to report all possible drinking water sources and their fluoride content in the Libyan city of Zliten. Methods: This descriptive study used a convenient sampling strategy to collect 68 samples from different drinking water sources across the city. The fluoride concentration was identified using potentiometric method by means of fluoride selective ion electrode. Results: 31 source of desalinated water and 37 ground water source have been identified as drinking water. Moreover, the fluoride content was found to be much lower than recommended by the national and international standards for the desalinated water (0.047 ppm±0.062) while that of ground source was found to range from 0.9 to 2.23 ppm with a mean of (1.43 ppm±0.38). Conclusion: People in the city have many choices for drinkable water, however, those who drink from the desalinated water consume less water-dissolved fluoride than those who rely on the ground water as a source of drinking. This reflects the fact that the residents have no equal chances to get the sufficient amounts of fluoride necessary for healthy teeth. Accordingly, more research is needed to evaluate the actual effect of this discrepancy in fluoride consumption on the population and consequently to implement the required strategies essential to assure optimum oral health for the whole population.

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“…Fluoride concentrations range from 0.01 to 4 mg/1, but a predominance of values below 1 mg/l is still noted (Bertrand, 2001 ). These high fluoride concentrations recorded in deep waters can be related to the prolonged contact of alkaline water with fluoride-rich rocks, which leads to their release and passage through the water (Guissouma and Tarhouni, 2015 ). Sheep and cattle drinking from this water show dental and bone damage wich represented a major signs of fluorosis (Guissouma and Tarhouni, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Analysis of Fluoride Contamination in Sheep Serum and in Water in the North East of Tunisia Ore Deposits

et al. 2021

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The north east of Tunisia ore deposits (Hammam Zriba) contain a large amount of fluorides constituting a risk of environmental pollution as well as risks to human and animal health. The aim of our work was to assess the levels of fluorides in the water and blood of sheep in the east of Tunisia region. This analysis study included 78 water samples and 60 blood samples taken during 3 days in the year 2019, from a sheep herd at Hammam Zriba delegation. The determination of fluorine concentration in the samples was carried out by potentiometry with a selective electrode type ISE combined Fluoride perfectION™. High Fluoride concentrations were found at a mean of 1.62 ± 1.18, 1.45 ± 0.98, and 2.65 ± 1.61 mg/l, respectively, in running, deep, and stagnant waters. In addition, 83.3% of the animals reared within 400 m of the study area had elevated fluoride levels in the blood exceeding the usual values (fluoremia> 0.15 mg/l). The concentration of fluoride in the blood of the animals decreases with increasing distance from the mine.

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Fluoride in Tunisian Drinking Tap Water

Cited by 9 publications

References 4 publications

Properties of sludge generated by the treatment of fluoride-containing wastewater with dicalcium phosphate dihydrate

Properties of sludge generated by the treatment of fluoride-containing wastewater with dicalcium phosphate dihydrate

Fluoride Concentration in Drinking water in The Libyan City of Zliten: Dental Perspective

Analysis of Fluoride Contamination in Sheep Serum and in Water in the North East of Tunisia Ore Deposits

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