Batch Studies of Water Defluoridation Using Fishbone Charcoal

Fishbone charcoal adsorbs fluoride from aqueous solutions. In this study, the effect of variables such as the contact time, size of the adsorbent, initial solute concentration, pH, and dose of adsorbent on the fluoride adsorption by the fishbone charcoal in a batch system is investigated. Related re...lationships between variables evolved. The amount of fluoride adsorbed per g of adsorbent increased with increase in initial fluoride concentration for a given particle size. Fluoride removal was found to be-a-function of pH and time. An empirical relationship is obtained to predict the fraction of fluoride remaining in solution at any time and pH. Another empirical relationship has been attempted to estimate the percentage of fluoride removal at any time for known values of the adsorbent dose and the initial solute concentration under the observed simulated field test conditions. The equilibrium fluoride concentration decreased with increasing adsorbent doses at any given initial solute concentration. Further, the observed equilibrium concentration and the fluoride adsorption capacity (expressed as the amount of fluoride adsorbed per unit weight of fishbone charcoal) poorly correlated in Langmuir and Freundlich isotherms. A linear relationship between these parameters has evolved. Ausführliche Beschreibung Beschreibung ausblenden

1. Person:	Bhargava, Devendra S.
Weitere Personen:	Killedar, Shri D. J. verfasserin
Quelle:	in Research Journal of the Water Pollution Control Federation Vol. 63, No. 6 (1991), p. 848-858 Weitere Artikel
Format:	Online-Artikel
Sprache:	English
Veröffentlicht:	1991
Beschreibung:	Online-Ressource
Schlagworte:	research-article Activated carbon Adsorption Fluoride Isotherms Modeling pH
Online Zugang:	Volltext
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Anmerkung:	Copyright: Copyright 1991 The Water Pollution Control Federation (WPCF)