Dyeing of Waste Cotton Fabric as Biosorbent of Heavy Metals from Aqueous Solution

Document Type : Original Article

Authors

1 chemistry , science, al-azhar university (girls), nasr city, cairo, egypt

2 department of chemistry-faculty of science-alazhar university

Abstract

Heavy metal pollution is a major problem in the environment. The impact of toxic metal ions can be minimized by different technologies. But among them, adsorption was found to be very efficient and common due to the low concentration of metal uptake and economically feasible properties. Cotton fabrics are of low cost and widely used, and very promising for the future. These are available in abundant quantity, are cheap and have low or little economic value. Waste cotton fabrics (WCF) are used in different metal detoxifications in water and waste water as absorbent for the sorption of Ca (II)and Mg (II) ions from aqueous solution. . The cotton fabrics were characterized by before and after the adsorption process. Cotton fabric has been used in two directions removal of heavy metals and dyeing .The results of maximum adsorption capacity was 42 mg g−1 for Ca (II) and 35 mg g−1 for Mg (II) at optimal pH (11). The dyeing behavior of the WCF before and after adsorption of metals (WCF-Ca (ll)) with reactive yellow145 (RY 145 ) has been studied and the build up of dye, measured as exhaustion percentage (E%) and ( K/S ). The overall fastness properties to light, perspiration, washing for the colored samples are ranging from very good to excellent. in this study shows significant benefit of eco–friend and cost-efficiency for removal of metals in potential river metal pollutions comparing with traditional adsorbents.

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History

  • Receive Date: 22 July 2021
  • Revise Date: 05 August 2021
  • Accept Date: 09 August 2021

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