Anion exchange resins for removal of reactive dyes from textile wastewaters.

摘要: Sorption onto an easily regenerable sorbent in fixed bed filters would be interesting option for removal of reactive dyes from textile wastewaters. A previous screening with model solutions (Dyes Pigm 51 (2001) 111) had shown two anion exchangers (strong basic S6328a and weak MP62, both Bayer) to exhibit good sorption characteristics dyes. The aim this study was evaluate these materials more closely. Thus filter breakthrough, the behavior original wastewater samples, effect inorganic parameters as well regeneration were studied. Breakthrough curves are relatively unfavorable a flat gradient, but throughput until breakthrough (100-800 volumes) should sufficient technical use. With resins dye uptake is influenced little by competition anions (sulfate, carbonate, phosphate) they perform However, type only efficient up pH 8. Alkaline works acid most