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Materials Science, Paper & Wood
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Alan Yiu Lun Tang et al.
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Hasnia Reffas et al.
Summary: In this study, a new eco-friendly cloud-point extraction process (CPEP) was used to remove chromium(III) from concentrated aqueous sulfate medium. By optimizing the parameters, a high extraction efficiency was achieved. The study also revealed that the cloud-point process of chromium(III) proceeds via a cation exchange mechanism. It was demonstrated that the H(2)Saldien/Tergitol 15-S-7 biodegradable extractant system exhibited superior extractability for Cr(III) in the CPE process.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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Tarek Abou Elmaaty et al.
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Summary: In traditional water-based dyeing systems, a large amount of salts and water are consumed, making it difficult to treat inorganic salts in dyeing wastewater. From a sustainable chemistry and engineering perspective, a salt-free reactive dyeing system was established and the adsorption kinetics, adsorption isotherm, and affinity between dye and cotton fiber were studied. The influence of inorganic salts on reactive dye pilot dyeing was also evaluated. The results showed that the concentration of sodium sulfate had little effect on the color depth of dyed fabrics and the fixation of dyes. The adsorption rate of reactive dye increased with an increase in sodium sulfate concentration.
Review
Chemistry, Applied
Venkatesh Bairabathina et al.
Summary: This study examines the need for non-aqueous dyeing systems in the chemical processing industry and the research that has been conducted to reduce water and chemical usage in the dyeing process. It highlights various methods that have been explored to minimize environmental impact and presents the introduction of the reverse micellar system for dyeing natural fibers to further reduce water and chemical usage.
COLORATION TECHNOLOGY
(2022)
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Chemistry, Multidisciplinary
Jamiu Mosebolatan Jabar et al.
Summary: The demand for natural dyes is increasing due to growing awareness of the health and environmental hazards associated with synthetic dyes. This study investigated the coloring potential of mangiferin yellow dye extracted from mango leaves for cotton fabric. Optimum dyeing conditions and eco-friendly mordants were used to achieve the desired results. The research showed that mangiferin is a sustainable alternative for dyeing textile substrates, producing a variety of beautiful shades.
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(2022)
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Materials Science, Paper & Wood
Zhen Zhang et al.
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Materials Science, Paper & Wood
Md. Yousuf Hossain et al.
Summary: The study demonstrates that dyeing cotton fabric with cacao husk extracts in the waterless D5 dyeing system can achieve better dye exhaustion and fixation rates, as well as improved color strength and colorfastness to washing and rubbing. The results show that optimizing dyeing conditions such as temperature and time can greatly impact the dye exhaustion percentage. Linear regression analysis reveals a strong correlation among the selected factors, indicating the potential for this eco-friendly dyeing method to minimize environmental pollution in the textile industry.
Review
Materials Science, Paper & Wood
Faheem Uddin
Summary: This study examines the environmental challenges posed by the dyes and chemicals in textile dyeing effluent, as well as possible solutions including nanotechnology. Case studies demonstrate the need for research and innovation to replace or control hazardous dyes and chemicals in traditional dyeing processes to make the effluent more environmentally friendly.
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Meng Zhang et al.
Summary: The combination of a reactive dye and an anti-bacterial precursor for simultaneous dyeing and anti-bacterial finishing of cotton fabric, along with the use of a cationisation reagent for fabric modification, effectively reduces emissions of pollutants and sodium sulphate dosage. The treated fabric exhibited good dye depth, high breaking strength, and maintained anti-bacterial properties against Staphylococcus aureus and Escherichia coli.
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Yimin Wei et al.
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