Dyeing industries, including textiles, dyestuffs, printing, leather, and plastics industries have significantly contributed to water pollution by releasing untreated wastewater tainted with dyes into our bodies. Discharging such can severely impact both humans the ecosystem; therefore, treatment is essential before its release. Adsorption, one of most effective methods for removing various colo...

The oxidation of organic compounds and color removal of a synthetic dyeing effluent when treated with a combination of Fenton’s Reagent and biological oxidation in a sequencing batch reactor was evaluated in this work. A central composite design approach was used to find the best conditions of temperature, hydrogen peroxide and ferrous ion concentrations that maximize color and dissolved organi...

Abstract With the enhancement of environmental protection consciousness, concerns have been raised about non-toxic and biodegradable leather retanning agents. According to European standard 2002/231/EC, free formaldehyde content products should be less than 150 mg/kg. As one agents in market, Multifunctional agent (MTA) is 372.22 mg/kg higher limit value. In this work, glutaraldehyde as an alte...

Nanofiltration (NF) has become a widely accepted process not only for producing drinking water but also for recovering wastewater in industrial processes or removing pollutants from industrial wastewater effluent. In the textile industry, the treatment of various dye baths with NF at room temperature have already been studied and was found feasible at lab-scale and pilot scale. The aim of this ...

The application of synthetic colors in textile industries and their entry into the water and groundwater is an environmental problem because of being very toxic material. The synthetic colors which are used in textile dyeing (plyacrilic and polyester) are usually dispersing colorants. They derive the azo and anthraquinone chemicals. Electro-Fenton process is an efficient technique which can deg...

Dyeing is the process of adding color to textile products like fibers, yarns and fabrics. Dyeing is normally done in a special solution containing dyes and particular chemical material. After dyeing, dye molecules have uncut chemical bond with fiber molecules. The temperature and time controlling are two key factors in dyeing. The main aim of this project is to monitor and control the parameter...

We have continued to make good progress in all the diverse components of our research effort. Closed-loop control of dyeing processes requires real time monitoring of dyebath concentrations. Significant advances have been made in the use of both visible region absorption spectrophotometry, and flow-injection analysis (F.I.A.), for real-time dyebath analysis. Methods were developed for handling ...

In this work, we valorized two wastes of plant origin in activated carbon (AC) by chemical activation, with a view to their use for the elimination industrial dyes and artisanal dyeing simulated methylene blue iodine water. These are coconut shells (Coco nucifera) teak wood chips (Tectona grandis). For preparation based on residues, activation was carried out citric acid extracts lemon juice (C...