Single-Stage Operation of Hybrid Dark-Photo Fermentation to Enhance Biohydrogen Production through Regulation of System Redox Condition: Evaluation with Real-Field Wastewater

被引：32

作者：

Chandra, Rashmi ^{[1
,2
]}

Nikhil, G. N. ^{[1
]}

Mohan, S. Venkata ^{[1
,2
]}

机构：

[1] CSIR IICT, Bioengn & Environm Sci BEES, Hyderabad 500007, Andhra Pradesh, India

[2] CSIR IICT, AcSIR, Hyderabad 500007, Andhra Pradesh, India

来源：

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2015年 / 16卷 / 05期

关键词：

biohydrogen; photosynthetic bacteria; real-field wastewater; dark-photo fermentation; HYDROGEN-PRODUCTION; PROCESS OPTIMIZATION; SUBSTRATE; BACTERIA; CONVERSION; EFFLUENTS; BUTYRATE; RECOVERY; ACETATE; YIELD;

D O I：

10.3390/ijms16059540

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Harnessing hydrogen competently through wastewater treatment using a particular class of biocatalyst is indeed a challenging issue. Therefore, biohydrogen potential of real-field wastewater was evaluated by hybrid fermentative process in a single-stage process. The cumulative hydrogen production (CHP) was observed to be higher with distillery wastewater (271 mL) than with dairy wastewater (248 mL). Besides H-2 production, the hybrid process was found to be effective in wastewater treatment. The chemical oxygen demand (COD) removal efficiency was found higher in distillery wastewater (56%) than in dairy wastewater (45%). Co-culturing photo-bacterial flora assisted in removal of volatile fatty acids (VFA) wherein 63% in distillery wastewater and 68% in case of dairy wastewater. Voltammograms illustrated dominant reduction current and low cathodic Tafel slopes supported H-2 production. Overall, the augmented dark-photo fermentation system (ADPFS) showed better performance than the control dark fermentation system (DFS). This kind of holistic approach is explicitly viable for practical scale-up operation.

引用

页码：9540 / 9556

页数：17

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