Phosphate removal from aqueous solution using slag and fly ash
Author:
Open Access
- 1 December 2013
- journal article
- Published by Taylor & Francis in HBRC Journal
- Vol. 9 (3) , 270-275
Abstract
The application of low cost materials in wastewater treatment has recently attracted great interest; fly ash and slag have improved high performance as a low cost material and have been used as a potential adsorbent for removal of phosphate, heavy metals and organic pollutants in wastewater treatment. Batch adsorption experiments were performed in order to evaluate phosphate removal efficiency of slag and fly ash. The effect of various operating variables, i.e. initial pH, adsorbent dose, initial metal ion concentration, and adsorption time of phosphate using the slag and fly ash, has been studied. The sorption process was relatively fast and equilibrium has been reached at 30min contact time and the maximum removal percentage was achieved at an adsorbent loading weight of 0.5gm/100ml. Phosphate removal ratio using slag and fly ash was 93% and 95%, respectively, under the batch test conditions. The overall uptake for the slag was maximum at pH 5 and at pH 7 for fly ash. The sorption data were represented using Freundlich and Langmuir parameters, where the sorption data were better represented by the Freundlich isotherm than by the Langmuir. The optimized method was applied for phosphate removal from wastewater of Proctor and Gamble (P&G) Company for household products. The achieved phosphate removal efficiency was 96.15% and 96.9% using slag and fly ash respectivelyKeywords
This publication has 16 references indexed in Scilit:
- Phosphate removal from solution using steel slag through magnetic separationJournal of Hazardous Materials, 2008
- Phosphate immobilization from aqueous solution by fly ashes in relation to their compositionJournal of Hazardous Materials, 2007
- Removal of chromium(III) from tannery wastewater using activated carbon from sugar industrial wasteJournal of Hazardous Materials, 2006
- Removal of lead(II) by adsorption using treated granular activated carbon: Batch and column studiesJournal of Hazardous Materials, 2005
- Agricutural By-Product as Metal Adsorbent: Sorption of Lead(II) from Aqueous Solution onto Coirpith CarbonEnvironmental Technology, 2000
- Effect of carbon surface chemistry on the removal of reactive dyes from textile effluentWater Research, 2000
- Removal of metal ions from wastewaters. The case of nickelEnvironmental Technology, 1993
- Phosphorus removal from wastewater by half-burned dolomiteWater Research, 1991
- A contribution to the study of phosphate sorption by three Greek fly ashesToxicological & Environmental Chemistry, 1988
- A fundamental research on phosphate removal by using slagWater Research, 1986