|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|4420061||1618958||2014||6 صفحه PDF||سفارش دهید||دانلود رایگان|
• B.V. C09V was as a functional biomaterial to remove crystal violet and Cu(II).
• Cu(II) inhibited the strain growth due to the adsorption of Cu(II) on B.V. C09V.
• Crystal violet (CV) as a carbon resource promoted the growth of strains.
• The strain was the potential to degrade CV and to bioabsorb Cu(II).
Burkholderia vietnamiensis C09V (B.V. C09V) was used to remove both crystal violet (CV) and Cu(II) because dye effluents often contain dyes and metal ions. Inhibiting the strain׳s growth through the biosorption of Cu(II) on B.V. C09V and promoting its growth by using CV as a carbon source led to the degradation of CV (30 mg/L). It fell to 36.9 percent and the amount of Cu(II) (50 mg/L) removed rose to 34.9 percent in the presence of both CV and Cu(II). This outcome is comparable to the single presence of CV and Cu(II). EDS analysis showed that Cu(II) was adsorbed onto the strain (the atomic percentage of Cu(II) was 1.9 percent), while kinetic studies indicated that firstly, the decolorization of CV fitted well to the pseudo first-order degradation kinetic model and secondly, the biosorption of Cu(II) fitted well to the pseudo second-order kinetic model. The degradation rate constants of CV were stable in the 0.101–0.0068/h range and R2 was both higher than 0.981 when Cu(II) concentrations were present. Furthermore, the biosorption capacity of Cu(II) ranged from 38.8 to 20.3 mg/g at the CV concentration of 30 mg/L (both R2>0.96). This suggests that the strain has the potential to degrade CV and facilitate the biosorption of Cu(II) in dye effluent.
Journal: Ecotoxicology and Environmental Safety - Volume 105, July 2014, Pages 1–6