Untreated textile dye-contaminated wastewater is the main source of water pollution, when discharged into water bodies, as it contains potential toxic elements (PTEs). The current study, aimed to isolate ions, identify textile dye-degrading bacteria, and as well as analyzing their resistance offered by bacteria against potentially toxic elements. Based on different cultural properties, 16 bacterial isolates were selected to explore the degrading ability of malachite green. Depending on different physical and chemical parameters i.e. morphological and biochemical factors; isolates were identified as, Bacillus subtilis, Pseudomonas stutzeri. Three Pseudomonas species were tested against 16 commercial industrial dyes. Isolates were identified as, Bacillus subtilis, No growth was shown on plates containing malachite green by Pseudomonas cepacia, while Pseudomonas stutzeri, showed positive growth. Nutrient broth culture revealed that Pseudomonas. stutzeri exhibited to be more potent, as it degraded almost 85% dye for three of the 16 dyes.

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The Isolation of Bacteria, and Its Effects on the Degradation of Malachite Green

  • N. Parveen,
  • O. E. Hany,
  • S. A. U. Qadar

摘要

Untreated textile dye-contaminated wastewater is the main source of water pollution, when discharged into water bodies, as it contains potential toxic elements (PTEs). The current study, aimed to isolate ions, identify textile dye-degrading bacteria, and as well as analyzing their resistance offered by bacteria against potentially toxic elements. Based on different cultural properties, 16 bacterial isolates were selected to explore the degrading ability of malachite green. Depending on different physical and chemical parameters i.e. morphological and biochemical factors; isolates were identified as, Bacillus subtilis, Pseudomonas stutzeri. Three Pseudomonas species were tested against 16 commercial industrial dyes. Isolates were identified as, Bacillus subtilis, No growth was shown on plates containing malachite green by Pseudomonas cepacia, while Pseudomonas stutzeri, showed positive growth. Nutrient broth culture revealed that Pseudomonas. stutzeri exhibited to be more potent, as it degraded almost 85% dye for three of the 16 dyes.