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Enhanced volatile fatty acid production from sago hampas by Clostridium beijerinckii SR1 for bioelectricity generation using microbial fuel cells.
Bioprocess and Biosystems Engineering ( IF 3.5 ) Pub Date : 2020-06-22 , DOI: 10.1007/s00449-020-02391-9
Mohd Azwan Jenol 1 , Mohamad Faizal Ibrahim 1 , Ezyana Kamal Bahrin 1 , Suraini Abd-Aziz 1
Affiliation  

Sago hampas is a starch-based biomass from sago processing industries consisted of 58% remaining starch. This study has demonstrated the bioconversion of sago hampas to volatile fatty acids (VFAs) by Clostridium beijerinckii SR1 via anaerobic digestion. Higher total VFAs were obtained from sago hampas (5.04 g/L and 0.287 g/g) as compared to commercial starch (5.94 g/L and 0.318 g/g). The physical factors have been investigated for the enhancement of VFAs production using one-factor-at-a-time (OFAT). The optimum condition; 3% substrate concentration, 3 g/L of yeast extract concentration and 2 g/L of ammonium nitrate enhanced the production of VFAs by 52.6%, resulted the total VFAs produced is 7.69 g/L with the VFAs yield of 0.451 g/g. VFAs hydrolysate produced successfully generated 273.4 mV of open voltage circuit and 61.5 mW/m2 of power density in microbial fuel cells. It was suggested that sago hampas provide as an alternative carbon feedstock for bioelectricity generation.



中文翻译:

Clostridium beijerinckii SR1 从西米 hampas 中增强挥发性脂肪酸的产生,用于使用微生物燃料电池进行生物发电。

Sago hampas 是一种来自西米加工业的淀粉基生物质,由 58% 的剩余淀粉组成。该研究证明了拜氏梭菌将西米汉帕斯生物转化为挥发性脂肪酸 (VFA)SR1 通过厌氧消化。与商业淀粉(5.94 g/L 和 0.318 g/g)相比,从西米 hampas(5.04 g/L 和 0.287 g/g)获得更高的总 VFA。已经研究了物理因素以使用一次一个因素 (OFAT) 来增强 VFA 的生产。最佳条件;3% 的底物浓度、3 g/L 的酵母提取物浓度和 2 g/L 的硝酸铵使 VFAs 的产量提高了 52.6%,最终产生的 VFAs 总量为 7.69 g/L,VFAs 产量为 0.451 g/g。产生的 VFA 水解产物成功地在微生物燃料电池中产生了 273.4 mV 的开路电压和 61.5 mW/m 2的功率密度。有人建议,西米 hampas 可作为生物发电的替代碳原料。

更新日期:2020-06-22
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