کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7068716 | 1459893 | 2018 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rapid start-up of a bioelectrochemical system under alkaline and saline conditions for efficient oxalate removal
ترجمه فارسی عنوان
راه اندازی سریع سیستم بیو الکتروشیمیایی در شرایط قلیایی و شور برای حذف اکسیلات کارآمد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
This study examined a new approach for starting up a bioelectrochemical system (BES) for oxalate removal from an alkaline (pHâ¯>â¯12) and saline (NaClâ¯25â¯g/L) liquor. An oxalotrophic biofilm pre-grown aerobically onto granular graphite carriers was used directly as both the microbial inoculum and the BES anode. At anode potential ofâ¯+200â¯mV (Ag/AgCl) the biofilm readily switched from using oxygen to graphite as sole electron acceptor for oxalate oxidation. BES performance was characterised at various hydraulic retention times (HRTs, 3-24â¯h), anode potentials (â600 toâ¯+200â¯mV vs. Ag/AgCl) and influent oxalate (25â¯mM) to acetate (0-30â¯mM) ratios. Maximum current density recorded was 363â¯A/m3 at 3â¯h HRT with a high coulombic efficiency (CE) of 70%. The biofilm could concurrently degrade acetate and oxalate (CE 80%) without apparent preference towards acetate. Pyro-sequencing analysis revealed that known oxalate degraders Oxalobacteraceae became abundant signifying their role in this novel bioprocess.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 250, February 2018, Pages 317-327
Journal: Bioresource Technology - Volume 250, February 2018, Pages 317-327
نویسندگان
Tharanga N. Weerasinghe Mohottige, Maneesha P. Ginige, Anna H. Kaksonen, Ranjan Sarukkalige, Ka Yu Cheng,