کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6663843 | 1427040 | 2018 | 52 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of zirconium caged activated biochar alginate beads towards deionization of Cr(VI) laden water in a fixed bed column reactor
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
An investigation of dynamic fixed bed loaded with zirconium caged steam activated biochar alginate bead was performed towards deionization of Cr(VI) laden aqueous solution. Impact of process parametric factors which include bed height (5 to 30â¯cm), initial influent concentration (10 to 60â¯mg/L) and flow rate (1 to 4â¯mL/min) were studied at a constant pH of 3â¯Â±â¯0.5 from a synthetic non-competitive Cr(VI) solution. As interpreted from the experimentations it was observed that with every increase in bed height, length of the breakthrough curve also increased. On the contrary to bed height, increase in metal concentration and flow rate with predefined bed height efficacy of the column decreased. The adsorbent bed was able to retain 499.5â¯mg of ions with an uptake of 116.805â¯mg/g from an optimum influent metal concentration of 50â¯mg/L at a flow rate of 1â¯mL/min. A removal of 93.54% was observed at this optimum condition. The process was evaluated with bed depth service time model, Thomas and Yoon-Nelson model which substantiated the findings. From desorption-adsorption cycle it was observed that the column retained its removal efficacy up to 7 cycles with a column regeneration percentage of 51.108%. This adsorbent was capable of removing Cr(VI) from a multi-ion synthetic waste water solution where the breakthrough curve showed similarity with 10â¯mg/L of synthetic single Cr(VI) ion solution. Thus, the prepared zirconium caged adsorbent could be used in a fixed bed column reactor towards remediating metal ions from contaminated aqueous solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 4, August 2018, Pages 4018-4029
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 4, August 2018, Pages 4018-4029
نویسندگان
Soumya Banerjee, S.R. Joshi, Tamal Mandal, Gopinath Halder,