Eco-friendly dyeing of modified cotton fabrics with grape pomace colorant: Optimization using full factorial design approach

ABSTRACT

Grape pomace, which is a winery waste is studied and experimented to serve as a source of natural dyes that could be utilized in textile dyeing. In previous studies, it was found that grape pomace released from wine industry contains valuable resource of abundant natural coloring substances.

The present work involves the optimization of dyeing process of cotton by natural colors extracted from grape pomace. The optimized dyeing conditions were; dyeing bath temperature 100°C, dyeing time 55 min, and dye bath pH 8. In addition, it was demonstrated that the dye bath of dyed cotton reduced the Chemical Oxygen Demand (COD) and the Biological Oxygen Demand (BOD)₅ of the dye bath.

摘要

对葡萄渣进行了试验研究，作为天然染料的来源，可用于纺织印染。在以往的研究中发现，葡萄酒中提取的葡萄渣含有丰富的天然色素资源。

本课题是从葡萄渣中提取天然色素来优化染色工艺。优化的染色条件为：染色浴温度100°C，染色时间55分钟，染液ph值8。此外，它表明，纯棉染色的染浴中减少了化学需氧量和染浴的生物需氧量。

KEYWORDS:

• Natural dyeing
• cationized cotton fabric
• grape pomace
• extraction
• optimization
• environmental assessment

关键词:

• 天然染色，阳离子改性棉织物，提取，优化，环境评价

Additional information

Funding

This research is performed in the framework of a MOBIDOC thesis financed by the EU under the program PASRI. The authors express their gratitude to the Tunisian Higher Education and Scientific Research Ministry for the financial support.