کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6968867 | 1453014 | 2018 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced bioelectroremediation of a complexly contaminated river sediment through stimulating electroactive degraders with methanol supply
ترجمه فارسی عنوان
بهبود زیست سازگاری زیست محیطی یک رسوب رودخانه ای پیچیده آلوده به وسیله تحریک کننده های الکترواکتیو با عرضه متانول
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کلمات کلیدی
زیست تخریب زباله، تحریک متانول، تحریک الکتریکی، تخریب کننده های الکتریکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
Bioelectroremediation is an efficient, sustainable, and environment-friendly remediation technology for the complexly contaminated sediments. Although various recalcitrant pollutants could be degraded in the electrode district, the degradation efficiency was generally confined by the low total organic carbon (TOC) content in the sediment. How to enhance the electroactive degraders' activity and efficiency remain poorly understood. Here we investigated the bioeletroremediation of a complexly contaminated river sediment with low TOC in a cylindric sediment microbial fuel cell stimulated by methanol. After 200 days treatment, the degradation efficiencies of total petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAH), and cycloalkenes (CYE) in the electrode district with methanol stimulation were 1.45-4.38 times higher compared with those in the non-electrode district without methanol stimulation. The overall electrode district communities were significantly positively correlated with the variables of the enhanced TPH, PAH, CYE and TOC degradation efficiencies (pâ¯<â¯.01). The joint electrical and exogenous methanol stimulation selectively enriched electroactive degraders (Geobacter and Desulfobulbus) in the anode biofilms, and their proportion was markedly positively correlated with the characteristic and total pollutants degradation efficiencies (pâ¯<â¯.001). This study offers a new insight into the response of key electroactive degraders to the joint stimulation process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 349, 5 May 2018, Pages 168-176
Journal: Journal of Hazardous Materials - Volume 349, 5 May 2018, Pages 168-176
نویسندگان
Youkang Zhao, Zhiling Li, Jincai Ma, Hui Yun, Mengyuan Qi, Xiaodan Ma, Hao Wang, Aijie Wang, Bin Liang,