title: Treatment of textile wastewaters using Eutectic Freeze Crystallization.
abstract: A water treatment process needs to recover both water and other useful products if the process is to be viewed as being financially and environmentally sustainable. Eutectic Freeze Crystallization (EFC) is one such sustainable water treatment process that is able to produce both pure ice (water) and pure salt(s) by operating at a specific temperature. The use of EFC for the treatment of water is particularly useful in the textile industry because ice crystallization excludes all impurities from the recovered water, including dyes. Also, EFC can produce various salts with the intention of reusing these salts in the process. This study investigated the feasibility of EFC as a treatment method for textile industry wastewaters. The results showed that EFC can be used to convert 95% of the wastewater stream to pure ice (98% purity) and sodium sulfate.
authors.affiliation: Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701, Cape Town, South Africa E-mail: dyllon.randall@gmail.com; Aurecon Centre, Lynnwood Bridge Office Park, 4 Daventry Street, Lynnwood Manor, 0081, Tshwane, South Africa.
authors.forename: D G
authors.initials: DG
authors.lastname: Randall
authors.affiliation: Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701, Cape Town, South Africa E-mail: dyllon.randall@gmail.com.
authors.forename: C
authors.initials: C
authors.lastname: Zinn
authors.affiliation: Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701, Cape Town, South Africa E-mail: dyllon.randall@gmail.com.
authors.forename: A E
authors.initials: AE
authors.lastname: Lewis
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D003460:Crystallization; D005615:Freezing; D007053:Ice; D007220:Industrial Waste; D013431:Sulfates / Q000737:chemistry*; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D007053:Ice; D007220:Industrial Waste; D013431:Sulfates; D062065:Wastewater; D014874:Water Pollutants, Chemical; C012036:sodium sulfate