Recovering low-turbidity cutting liquid from silicon slurry waste

The particles in the solution of glycol (PAG) and water were larger than those in PAG–ethanol or PAG–acetone solutions, showing that water interfered with the adsorption of PAG molecules and weakened the steric stabilization. Using water as a diluent for sedimentation facilitated the separation of s...

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Veröffentlicht in:	Journal of hazardous materials 2014-04, Vol.271, p.252-257
Hauptverfasser:	Tsai, Tzu-Hsuan, Shih, Yu-Pei
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetone - chemistry Applied sciences Chemical engineering Cutting Cutting liquid Density Ethanol - chemistry Ethyl alcohol Exact sciences and technology General treatment and storage processes Glycols - chemistry Industrial Waste Liquid-liquid and fluid-solid mechanical separations Liquids Nephelometry and Turbidimetry Pollution Polymers - chemistry Recovering Recovery Recycling - methods Sedimentation Settling Silicon Silicon slurry waste Slurries Turbidity Wastes Water - chemistry
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Beschreibung
Zusammenfassung:	The particles in the solution of glycol (PAG) and water were larger than those in PAG–ethanol or PAG–acetone solutions, showing that water interfered with the adsorption of PAG molecules and weakened the steric stabilization. Using water as a diluent for sedimentation facilitated the separation of solids from cutting liquids. •Recovering clean cutting liquids was achieved by sedimentation with a diluent.•Water as a diluent was better than ethanol and acetone.•The recovered liquids (
ISSN:	0304-3894 1873-3336
DOI:	10.1016/j.jhazmat.2014.02.032