Salifu, Abdulai Fluoride Removal from Groundwater by Adsorption Technology 9781138373204

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Автор: Salifu, Abdulai
Название: Fluoride Removal from Groundwater by Adsorption Technology
ISBN: 9781138373204
Издательство: Taylor&Francis
Классификация:

Гидрология и гидросфера

Строительство и эксплуатация санитарно-технических и коммунальных сооружений

Обработка и утилизация отходов

ISBN-10: 1138373206
Обложка/Формат: Hardcover
Страницы: 300
Вес: 0.72 кг.
Дата издания: 12.10.2018
Серия: IHE Delft PhD Thesis Series
Язык: English
Размер: 240 x 170
Читательская аудитория: Postgraduate, research & scholarly
Основная тема: Hydrogeology & Groundwater
Подзаголовок: The occurrence, adsorbent synthesis, regeneration and disposal
Ссылка на Издательство: Link
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Поставляется из: Европейский союз
Описание:

In the Eastern corridor of Northern region of Ghana, presence of high fluoride concentration in the groundwater has made many drilled boreholes unusable for drinking. Little is, however, known about the factors contributing to the occurrence of high fluoride in this part of Ghana and its spatial distribution. Treatment of the fluoride-contaminated groundwater by adsorption is also hampered by the lack of suitable adsorbents that are locally available.

Based on principal component analysis, and saturation indices calculations, this thesis highlights that, the predominant mechanisms controlling the fluoride enrichment probably include calcite precipitation and Na/Ca exchange processes, both of which deplete Ca from the groundwater, and promote the dissolution of fluorite. The mechanisms also include F-/OH- anion exchange processes, as well as evapotranspiration processes which concentrate the fluoride ions, hence increasing its concentration in the groundwater. Spatial mapping showed that the high fluoride groundwaters occur predominantly in the Saboba, Cheriponi and Yendi districts.

The thesis further highlights that, modifying the surface of indigenous materials by an aluminium coating process, is a very promising approach to develop a suitable fluoride adsorbent. Aluminum oxide coated media reduced fluoride in water from 5. 0 0.2 mg/L to

Field testing in a fluoritic community in Northern Ghana showed that the adsorbent is also capable of treating fluoride-contaminated groundwater in field conditions, suggesting it is a promising defluoridation adsorbent. The adsorbent also showed good regenerability potential that would allow re-use, which could make it practically and economically viable. Additional research is, however, required to further increase the fluoride adsorption capacity of developed adsorbent.

Fluoride Removal from Groundwater by Adsorption Technology, Salifu, Abdulai