Removal of an Organic Dye from Water Using a Predispersed Solvent Extraction
2000; Taylor & Francis; Volume: 35; Issue: 12 Linguagem: Inglês
10.1081/ss-100100629
ISSN1520-5754
AutoresDong Woo Lee, Won Hi Hong, KYUNG YUP HWANG,
Tópico(s)Innovative Microfluidic and Catalytic Techniques Innovation
ResumoThe removal of Solvent Yellow 1 in a range from 0.25 to 10 ppm by weight from an aqueous solution using a predispersed solvent extraction (PDSE) was investigated and compared with conventional solvent extractions in batch mode. Colloidal liquid aphrons (CLAs) made out of kerosene were used as a predispersed organic solvent. To form CLAs, Tergitol 15-S-3 and sodium dodecylbenzene sulfonate were used as oil-soluble and water-soluble surfactants, respectively. The ratio of solvent volume to pregnant solution volume was less than 0.025. The efficiency of the extraction with CLAs can be higher than that of a single-staged conventional extraction process with a shorter contact time. The recovery of used CLAs with a colloidal gas aphrons (CGAs) flotation was measured using different surfactants. CLAs with an extremely large surface area can also reduce processing time and energy cost. PDSE is therefore a promising process for the removal of organic materials from water.
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