cationic polyacrylamide for textile dyeing wastewater in italy

cationic polyacrylamide for textile dyeing wastewater in italy
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  • Can chitosan remove reactive dyes from textile wastewater?
  • Results showed that chitosan, as an adsorbent, is able to remove the reactive dyes from textile wastewater because it can adsorb these dyes over a wide pH range and at high temperatures.
  • Which adsorbent is best for industrial cationic dyes?
  • As compared with other reported adsorbents, this cheap and facilely-prepared material has exceptional adsorption capacities for industrial cationic dyes, e.g., methylene blue (MB, 2624 mg/g), crystal violet (CV, 2553 mg/g), basic fuchsin (BF, 1729 mg/g), and methylene violet 3RAX (MV, 1239 mg/g), being 5–11 times of that reported in literatures.
  • What is the concentration of dye in textile wastewater?
  • Dye concentrations in textile wastewater are reported over a wide range of values. Laing (1991) indicated that the dye level in the textile effluent is 10–50 mg/l. However, the reactive dyes in cotton factories are reportedly discharged at a concentration of 60 mg/l (Shelley 1994) and a concentration between 100 and 200 mg/l (Gahr et al. 1994).
  • How is polyacrylamide gel obtained?
  • The polyacrylamide gel was obtained by dissolving 3 g of anionic polyacrylamide powder into 1000 mL of deionized water. In this study, a batch adsorption system was utilized for dye removal from synthetic wastewater.