Removol of Phthalic Acid Esters from Aqueous Solution by Inclusiong and Adsorption on beta-Cyclodextrin.

Experiments assessed the efficiency of beta-cyclodextrin (beta-CD) and its polymer (beta-CDP) in removing phthalic acid esters (PAEs) from wastewater and sediments. Fluorescence and unclear magnetic resonance spectra confirmed that PAEs were included within the beta- CD cavity. Absorption occurred in batch and column systems. The alkyl ch..

Products Produced by Ozonation of Dyes and Related Toxicity Issues.

Color abatement by ozonation is a viable treatment for textile dyeing wastewater. In metallized dyes, ozonation liberates the metal from the dye ligand. The liberated metal has a high toxicity compared with the bound metal in the original dye structure. Treatment of the ozonated solutions with ion exchange or chelating resins effectively ..

Case History; Reuse of Spent Reactive Dye baths: A Demonstration Using Ozone.

Southern Company Services, Alabama Power, and the Electric Power Reseach Institute sponsored a commercial demonstration of the ozone treatment of dyebathn from two dye jet machines. An ozone treated dyebath that used reactive dyes and either caustic or soda ash as a fixing agent successfully dyed light and dark shades on cotton fabric. Re..

Reducing Effluent Loading in Sizing and Desizing

Effluent anaysis showed that sizing agents cause 40-60 percent of textile effluent biological oxygen demand. Research developed new methods to reduce this high effluent load in sizing and desizing wastewater. Compact spinning methods manufacture yarns sup

Membrane Filtration Application in Water Recycling for Reactive Dyeing.

A study evaluated a membrane filtration process for the recycling of brine from fiber reactive dyebaths. Researchers removed hydrolyzed dyes, auxiliaries, and other materials from the dyebath and the first rinse composite mixture via ultrafilation and nanofiltration and used the filtered brine to dye a second batch of fabric in monochroma..

Study of Relationships between Band Ratio and Time of Exposure for Azo Disperse Dyes.

Researchers studied the relationship between and ratio Y/X--the ratio of extinctions at the short wave band compared with the long wave band--and time of exposure for azo disperse dyes. An experiment dyed polyester fibers with 20 dyes. Spectral analyses d

Application of enzymatic degradation for utilization of textile wastes. Optimization of the biodegradation process

The aim of this paper is to study the optimization of the cellulose biodegradation process for utilization of textile wastes from fibrous polyester-cellulose blends. A biodegradation process was carried out with the use of cellulolytic enzymes originated from the Trichoderma reesei strain. The optimization of cellulose degradation was ana..

Dye abatement of textile industry wastewater with bentonite and aluminium salts (French) (Elimination des colorants des eaux residuaires de l'industrie textile par la bentonite et des sels d'aluminium)

The textile industry uses synthetic dyes, most of them being toxic. In Algeria, the agricultural reutilization of treated wastewater, even industrial, is becoming a strong requirement. It is therefore necessary to drastically reduce the pollutants. Conven

An overview of oxidative and photooxidative decolorisation treatments of textile waste waters

Oxidative and photooxidative decolorisation of textile waste waters was investigated and it was determined that the simultaneous application of ultraviolet irradiation with hydrogen peroxide or ozone increases oxidation rate and strength of oxidation. The waste water quickly loses its colour and the noxious chemicals rapidly degrade to a ..

Purification of textile wastewater effluents by a combined Fenton process and ion exchange

Treatment of wastewater effluent from the secondary wastewater treatment plant of a dyeing and finishing mill is investigated for possible reuse. The treatment system employed consists of the Fenton process, chemical coagulation and ion exchange. The Fenton process and chemical coagulation are intended primarily to remove color, turbidity..