کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7705652 | 1497300 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Continuous biogenic hydrogen production from dilute acid pretreated algal hydrolysate using hybrid immobilized mixed consortia
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
This study investigated the bioconversion of dilute acid (2% H2SO4) pretreated red algae (Gelidium amansii) hydrolysate into H2 by anaerobic fermentation in a continuous stirred tank reactor under mesophilic conditions using hybrid immobilized cells as microbial catalyst. Two different hydraulic retention times (HRT) of 24Â h and 16Â h with a feed concentration of 15Â g/L hexose equivalent have been investigated over 85 days of operation to evaluate H2 production performance and stability of the continuous system. The highest hydrogen production rate (HPR) and hydrogen yield (HY) of 2.7Â L/L/d and 1.3Â mol/mol substrate hexoseadded was achieved at 24Â h HRT, while further operation at 16Â h HRT led to a significant drop in the hydrogen production with a HPR and HY values of 1.8Â L/L/d and 0.7Â mol/mol substrate hexoseadded, respectively. The bacterial community analysis characterized by 454 pyrosequencing revealed that the changes in HRT significantly influence the composition of the dominant microflora. At longer HRT (24Â h), the phyla Firmicutes was abundant over 98%, whereas at shorter HRT (16Â h), Proteobacteria being the dominant populations with 84%. These outcomes suggested that controlling appropriate HRT is prerequisite for efficient hydrogen production.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 25, 21 June 2018, Pages 11452-11459
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 25, 21 June 2018, Pages 11452-11459
نویسندگان
Gopalakrishnan Kumar, Periyasamy Sivagurunathan, Parthiban Anburajan, Arivalagan Pugazhendhi, Ganesh D. Saratale, Chang-Su Choi, Sang-Hyoun Kim,