REMOVAL OF FLUORIDE FROM URBANE DRINKING WATER BY EGGSHELL POWDER
Publish place: The first national conference on new techniques in laboratory equipment and materials of Iran's oil industry
Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IRANLABCO01_092
تاریخ نمایه سازی: 8 آذر 1394
Abstract:
The aim of this applied-analytical study is to investigate feasibility of fluoride (F) removal from drinking water using batch reactor with using eggshell powder. The variables under study involve pH, contact time, adsorbent doses, initial F concentration, reaction kinetics, and eggshell powder characteristics. Sample of urban drinking water is prepared containing 3-12 mg/L F. Eggshell powder is prepared in a laboratory oven at 105˚C for 12 h. The F-containing water enters batch reactor and F removal efficiency is studied in different cases of the variables pH (4-10), contact time (0-80 min), and adsorbent doses (1-2.5 gr/dl). Characteristics of the eggshell powder show that the average diameter size of eggshell powder is 2 μm. The main component of eggshell powder is calcium carbonate (CaCO3). The best conditions for F removal are obtained to be pH 6, contact time 60 min, and adsorbent dose 3 gr, and F concentration 3 mg/L. The adsorption of F in eggshell powder is obtained from Langmuir isotherm.
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Authors
g kashi
Department of Environmental Health, Islamic Azad University Tehran Medical Sciences Branch, Tehran, Iran
f khoshab
Department of Environmental Health, Islamic Azad University Tehran Medical Sciences Branch, Tehran, Iran
a Mohades Madaree
Department of Environmental Health, Islamic Azad University Tehran Medical Sciences Branch, Tehran, Iran
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