Utilization of Spent Coffee Ground Oil in Eco-Friendly Scouring and Reactive Dyeing Processes for Cotton

Abstract

In this research, utilizing of Arabica spent coffee ground oil was investigated for textile processing applications including scouring and reactive dyeing for cotton. The spent coffee ground oil was extracted using hexane and its chemical compositions were analyzed. The synthesized biosurfactant from spent coffee ground oil was investigated for use in cotton scouring. The results showed that the biosurfactant could well work as a scouring agent for cotton. Much better water absorption and reduced yellowness on cotton were achieved but higher applied concentration was needed as compared with the commercial wetting agent. It was also found that scouring efficiency of the biosurfactant could be promoted by adding alkali i.e. sodium carbonate, into a scouring bath, resulting in a satisfactory scouring level. A study on utilizing spent coffee ground oil in reactive dyeing process informs that by incorporating the oil into an aqueous dyebath to create oil/water dual-phase dyeing system, the dye exhaustion and color yield of Reactive Red 120 dye obtained on cotton could be enhanced without adding salt. This promotes a development of salt-free reactive dyeing process.

Direct Measuring Particulate Matters in Smoke Plumes from Chimneys in a Textile Dyeing Industrial Park by a Self-Developed PM Detector on an UAV in Yangtze River Delta of China

“…The proportion of PM size distribution below 2.5 µm was found to be over 90%. It may be due to the high temperature, causing oil and wax compounds in the fabric to be volatile in thermo-fixing machine, which is beneficial to the generation of PM 2.5 [34]. For the dying process (a panel), the sum of proportion of particle size range between 1-2.5 µm and 2.5-10 µm from Chimney D1 is the highest (7.84%), indicating that the end treatment of activated carbon adsorption is harder to capture the large PM than electrostatic precipitation [35], which might cause PM emission higher up (Figure 10a).…”

Sustainable exploration of coffee extracts (coffea arabica l.) for dyeing of microwave-treated bio-mordanted cotton fabric

“…It also acts as a cardio-tonic nuerotonic and possesses excellent anti-inflammatory, anti-allergic anti-bacterial, hypoglycemic, anti-diabetic and anti-cancerous activities (Chiari et al , 2014; Elabid et al , 2021). The main phytochemicals are caffein, chlorogenic acid, polyphenols, flavonoids, alkaloids, etc., but polyphenol (chlorogenic acid) is main functional moiety [Figure 1(b)] that imparts the brown color onto the matrix (Lee et al , 2017; Seemork et al , 2020). Cotton is the major fabric that has cellulosic unit where its –OH group is used for binding with the colorant [Figure 1(c)].…”