Using watermelon rind and nitrite-containing wastewater for electricity production in a membraneless biocathode microbial fuel cell

Yang, Yang; Xu, Peng; Dong, Sijia; Yu, Yang; Chen, Huan; Xiao, Jibo

doi:10.1016/j.jclepro.2021.127306

Cited by 13 publications

(10 citation statements)

References 48 publications

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“…In the third phase when 5 g L −1 substrate fed 1011 mV produced with MFC‐3 in order as greater than MFC‐1 > MFC‐2 > MFC‐5 > MFC‐4 (Table 6). In the present study, voltage production was higher with molasses compared with the 746 mV when breeding wastewater 16 and 294 mV when watermelon rind with nitrite‐rich wastewater was used 14 …”

Section: Resultsmentioning

confidence: 49%

Section: Resultsmentioning

confidence: 99%

“…In the present study, voltage production was higher with molasses compared with the 746 mV when breeding wastewater 16 and 294 mV when watermelon rind with nitrite-rich wastewater was used. 14 In this way, setup 3 with molasses and fixed temperature showed the highest efficiency in voltage production as compared to acetate which was the active control in all phases of the experiment.…”

Section: Voltage Productionmentioning

confidence: 87%

“…This genus is involved in the anaerobic fermentation and H 2 gas production from the organic substrate. Previous studies showed its abundance in the anodic part of MFC along with another genus Bacteroides when watermelon rind was used as substrate 14 and in biological nutrient removal facility of the wastewater treatment system and in anaerobic membrane bioreactor that played important role in hydrolysis and acidogenesis of organic load. 42 Electricigens genus Romboutsia found higher in MFCs with molasses ranges between 3.3 and 4.5 and 5 in MFC-5, in contrast with Li et al 43 positive correlation of its abundance was not found with electricity production but in the present study, as higher voltage and the current was produced in MFC3 and 5 therefore Romboutsia genus could be responsible for this.…”

Section: Columbic Efficiencymentioning

confidence: 99%

“…Similarly, carboxylic acids were more effective fuels in contrast to single sugars like (fructose) or alcohols (ethanol or glycerol) for the same organic load in MFC 12 . Industrial wastes including molasses, 13 watermelon rind, 14 dried sludge 15 and breeding wastewater 16 have been used efficiently in MFCs. For improving the biofilm and electricity production, control of the substrate is an important point, as 60% electricity generation is reduced by the addition of glucose in MFC using Tempe wastewater 17 .…”

Section: Introductionmentioning

confidence: 99%

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Potential of molasses substrate for bioelectricity production in microbial fuel cell with the help of active microbial community

Bhatti

Syed

Maqbool

et al. 2022

Intl J of Energy Research

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The present study investigated the potential of different concentrations of molasses wastewater to produce bioelectricity, reduction of chemical oxygen demand (COD) and functionally active microbial community in microbial fuel cells (MFCs). Five different MFC setups were compared in which three were fed with molasses (two at room and one at 35 C temperature), while fourth and fifth were used as control reactors fed with distilled water and acetate, respectively. During first, second and third phases of the experiment; 1, 3 and 5 g L À1 molasses in distilled water were used as 500, 1000 and 1500 mg L À1 COD loading rate, respectively. Analysis of different parameters including pH, total dissolved solids (TDS) and electrical conductivity performed after 3 days interval due to 3 days hydraulic retention time, while COD, current, the voltage after 24 hours interval. The maximum voltage (1011 mV) and current (0.91 mA) were produced in MCF-3 when 5 g L À1 of molasses was used, while maximum power density 1570.68 mW L À1 was produced by MFC-1. The highest COD removal (95%) was found in MFC-3 at 500 mg L À1 influent COD, comparable with control MFC-5 with acetate which exhibited 97% COD removal at the same loading rate of acetate. High throughput DNA sequencing showed Clostridium sensu stricto abundance was higher among all other genera in all MFCs, ranges between 11 and 17 in MFCs with molasses, 18.3 in MFC with acetate and a lower value of 5.8 in control MFC without molasses. Romboutsia found higher in MFCs with molasses and acetate, might be responsible for higher electricity generation in these MFCs. Higher Shannon diversity and low abundance were found in MFC4 with distilled water while low diversity with higher abundance due to enrichment of certain genera under specific substrates was found in MFC 2 and 5 fed with molasses and acetate, respectively. It was concluded that MFC with molasses concentration 5 g L À1 showed

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Section: Resultsmentioning

confidence: 49%

Section: Resultsmentioning

confidence: 99%