Biodecolorization of Metanil Yellow by Serratia marcescens MM06 Under Variable Environmental Conditions for Soil and Water Remediation
DOI:
https://doi.org/10.54987/jemat.v13i2.1149Keywords:
Biodecolorization, Metanil Yellow, Serratia marcescens, Salinity tolerance, Soil and water remediationAbstract
Metanil Yellow is a common pollutant coming from the dyeing industry. Its removal using decolorizing bacteria offers a sustainable approach to remediate polluted soils and water bodies. This research examines the impact of several parameters, such as initial dye concentration, temperature, pH, and NaCl concentration, on the decolorization efficacy of Serratia marcescens strain MM06 for the dye Metanil Yellow. The percentage of decolorization studied across different dye concentrations from 100 to 700 mg/L shows the highest decolorization at dye concentrations of between 100 and 300 mg/L. The decolorization was highest at 25°C. The effect of pH on the decolorization showed that the best decolorization occurred between pH 7 and 8. The effect of salinity on the decolorization for future coastal areas remediation showed that the best decolorization (90–100%) happened at NaCl levels up to 15 g/L. The decolorization effectiveness decreased as the NaCl concentration increased, reaching 10% at 30 g/L. Decolorization was severely inhibited by mercury, silver, and copper at 1 mg/L, which shows that chelating or sequestering agents may need to be added to the contaminated soil or water bodies before decolorization can take place. Gaining a thorough understanding of the decolorization characteristics is an important preliminary study before field studies are carried out to understand the limitations of the decolorization bacterium.
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