کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4365279 | 1301750 | 2011 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Sorption of heavy metals from electroplating effluent using immobilized biomass Trichoderma viride in a continuous packed-bed column Sorption of heavy metals from electroplating effluent using immobilized biomass Trichoderma viride in a continuous packed-bed column](/preview/png/4365279.png)
The sorption of heavy metals ions by immobilized Trichoderma viride biomass in a packed-bed column was studied. Fungal biomass T. viride was immobilized to Ca-alginate used for removal of Cr(VI), Ni(II) and Zn(II) ions from synthetic solutions and electroplating effluent. The experiments were conducted to study the effect of important design parameters such as bed height, flow rate and initial concentration of metal ions. The maximum sorption capacity was observed at flow rate 5 ml/min, bed height 20 cm and metal ions concentration 50 mg/L with immobilized biomass. Whereas, breakthrough time and saturation time decreased with increase flow rate and metal ions concentration and an inverse condition was found in bed height. The bed depth service time (BDST) Adams–Bohart model was used to analyze the experimental data. The regeneration efficiency was observed 40.1%, 75% and 53% for Cr(VI), Ni(II) and Zn(II) without any significant alteration in sorption capacity after 5th sorption–desorption cycles.
► Continuous packed-bed column is used for metal removal.
► Immobilized biomass Trichoderma viride as a biosorbent.
► Bed height, flow rate and metal ions concentration are design parameters.
► Bohart–Adams model (BDST) for analyze the breakthrough time and sorption capacity at different bed height.
► Regeneration efficiency and sorption capacity was observed up to five sorption–desorption cycles.
Journal: International Biodeterioration & Biodegradation - Volume 65, Issue 8, December 2011, Pages 1133–1139