Synthesis of hydroxy sodalite from coal fly ash using waste industrial brine solution
- 16 December 2011
- journal article
- research article
- Published by Informa UK Limited in Journal of Environmental Science and Health, Part A
- Vol. 46 (14), 1699-1707
- https://doi.org/10.1080/10934529.2011.623961
Abstract
The effect of using industrial waste brine solution instead of ultra pure water was investigated during the synthesis of zeolites using three South African coal fly ashes as Si feedstock. The high halide brine was obtained from the retentate effluent of a reverse osmosis mine water treatment plant. Synthesis conditions applied were; ageing of fly ash was at 47°C for 48 hours, and while the hydrothermal treatment temperature was set at 140°C for 48 hours. The use of brine as a solvent resulted in the formation of hydroxy sodalite zeolite although unconverted mullite and hematite from the fly ash feedstock was also found in the synthesis product.Keywords
This publication has 21 references indexed in Scilit:
- Application of hydroxy sodalite films as novel water selective membranesJournal of Membrane Science, 2008
- Synthesis of pure zeolites from supersaturated silicon and aluminum alkali extracts from fused coal fly ashFuel, 2007
- Direct crystallisation of a hydroxy sodalite membrane without seeding using a conventional ovenJournal of Membrane Science, 2007
- Synthesis of thin defect-free hydroxy sodalite membranes: New candidate for activated water permeationJournal of Membrane Science, 2007
- Effects of step-change of synthesis temperature on synthesis of zeolite 4A from coal fly ashMicroporous and Mesoporous Materials, 2005
- Microwave-assisted hydrothermal synthesis of hydroxy-sodalite zeolite membraneMicroporous and Mesoporous Materials, 2004
- Synthesis of zeolite from coal fly ashes with different silica–alumina compositionFuel, 2004
- A comparative study using two methods to produce zeolites from fly ashMinerals Engineering, 2004
- Synthesis of zeolites from coal fly ash: an overviewInternational Journal of Coal Geology, 2002
- Highly crystalline zeolite — a from flyash of bituminous and lignite coal combustionJournal of Hazardous Materials, 2001