Ionic Liquids Can Significantly Improve Textile Dyeing: An Innovative Application Assuring Economic and Environmental Benefits

Owing to economic reasons, the textile dyeing industry generally employs traditional and absolutely no-eco-friendly processes: very large quantities of water are indeed required together with a large number of added chemicals which represent dramatic environmental issues. In order to improve the sustainability of the process, we have investigated the dyeing of wool, polyester, and cotton with disperse Red 13 using ionic liquids as the sole additive. The results obtained in isothermal dyeing at 95 °C show an outstanding effect of the ionic liquid 1-(2-hydroxyethyl)-3-methylimidazolium chloride. This ionic liquid assures efficient dyeing of polyester and wool in open vessels, in the absence of whichever auxiliary agent with total dyebath exhaustion, thus allowing in principle the recycling of the dye bath! The environmental benefits arising from the substitution of a number of usually employed auxiliary agents with only an ionic liquid are highlighted together with the economic ones. This article reports fo...

[1]  Tom Welton,et al.  Room-temperature ionic liquids: solvents for synthesis and catalysis. 2. , 1999, Chemical reviews.

[2]  V. Conte,et al.  Stereoselective halogenations of alkenes and alkynes in ionic liquids. , 2001, Organic letters.

[3]  J. M. Gallardo,et al.  Determination of wastewater LC50 of the different process stages of the textile industry. , 2001, Ecotoxicology and environmental safety.

[4]  Awais Khatri,et al.  A review on developments in dyeing cotton fabrics with reactive dyes for reducing effluent pollution , 2015 .

[5]  Qiang Wang,et al.  Dyeing behaviors of ionic liquid treated wool , 2010 .

[6]  Y Verma,et al.  Acute toxicity assessment of textile dyes and textile and dye industrial effluents using Daphnia magna bioassay , 2008, Toxicology and industrial health.

[7]  John H. Xin,et al.  Environmental Compliance for Hong Kong Textile Dyeing Industry , 1999 .

[8]  M. Lehocký,et al.  Improvement of dye adsorption on synthetic polyester fibers by low temperature plasma pre-treatment , 2006 .

[9]  C. Chiappe,et al.  Ionic liquids: solvent properties and organic reactivity , 2005 .

[10]  C. Chiappe,et al.  Are ionic liquids a proper solution to current environmental challenges , 2014 .

[11]  Robin D. Rogers,et al.  Dissolution of Cellose with Ionic Liquids , 2002 .

[12]  Y. Verma.  Toxicity assessment of dye containing industrial effluents by acute toxicity test using Daphnia magna , 2011, Toxicology and industrial health.

[13]  Huizhong Chen.  Recent advances in azo dye degrading enzyme research. , 2006, Current protein & peptide science.

[14]  D. Macfarlane,et al.  Distillable Protic Ionic Liquids for Keratin Dissolution and Recovery , 2014 .

[15]  Samuel B. Moore,et al.  Systems thinking and green chemistry in the textile industry: concepts, technologies and benefits , 2004 .

[16]  João A. P. Coutinho,et al.  Complete removal of textile dyes from aqueous media using ionic-liquid-based aqueous two-phase systems , 2014 .

[17]  De Hong Cheng.  Application of Ionic Liquid in Silk Dyeing , 2011 .

[18]  F. Ferrero,et al.  Glycerol in comparison with ethanol in alcohol-assisted dyeing , 2012 .

[19]  C. Pretti,et al.  Acute toxicity of ionic liquids for three freshwater organisms: Pseudokirchneriella subcapitata, Daphnia magna and Danio rerio. , 2009, Ecotoxicology and environmental safety.

[20]  Dan Gao,et al.  Supercritical Carbon Dioxide Dyeing for PET and Cotton Fabric with Synthesized Dyes by a Modified Apparatus , 2015 .

[21]  S. Focardi,et al.  Theoretical descriptor for the correlation of aquatic toxicity of ionic liquids by quantitative structure–toxicity relationships , 2011 .

[22]  Mahadevan Surianarayanan,et al.  Choline-based ionic liquids-enhanced biodegradation of azo dyes. , 2012, Environmental science & technology.

[23]  Mirco Giansetti,et al.  Alcohol-assisted dyeing processes: a chemical substitution study , 2011 .

[24]  H. Ohno.  Electrochemical Aspects of Ionic Liquids: Ohno/Electrochem Ionic Liquids 2E , 2011 .

[25]  C. Chiappe,et al.  Development of cation/anion "interaction" scales for ionic liquids through ESI-MS measurements. , 2007, The journal of physical chemistry. B.

[26]  A. Perwuelz,et al.  Vanillin, a potential carrier for low temperature dyeing of polyester fabrics , 2013 .

[27]  R. Rogers,et al.  Ionic liquid processing of cellulose. , 2012, Chemical Society reviews.