Degradation of Hydroquinone Coupled with Energy Generation through Microbial Fuel Cells Energized by Organic Waste

Torlaema, Tasnim Aisya Mahmuelee; Ibrahim, Mohamad Nasir Mohamad; Ahmad, Akil; Guerrero–Barajas, Claudia; Alshammari, Mohammed B.; Oh, Sang‐Eun; Hussain, Fida

doi:10.3390/pr10102099

Cited by 12 publications

(4 citation statements)

References 58 publications

(65 reference statements)

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“…In addition, Nimje et al [58] reported that the power density of the Bacillus strains when used as a biocatalyst was 0.000105 mW/m 2 . However, a few investigations demonstrated that the found bacterial species (Figure 10) are well known as biodegradative and electroactive species, which we also found in our experiment [59,60].…”

Section: Bacterial Identificationsupporting

confidence: 86%

Bioenergy Generation and Phenol Degradation through Microbial Fuel Cells Energized by Domestic Organic Waste

et al. 2023

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Microbial fuel cells (MFCs) seem to have emerged in recent years to degrade the organic pollutants from wastewater. The current research also focused on phenol biodegradation using MFCs. According to the US Environmental Protection Agency (EPA), phenol is a priority pollutant to remediate due to its potential adverse effects on human health. At the same time, the present study focused on the weakness of MFCs, which is the low generation of electrons due to the organic substrate. The present study used rotten rice as an organic substrate to empower the MFC’s functional capacity to degrade the phenol while simultaneously generating bioenergy. In 19 days of operation, the phenol degradation efficiency was 70% at a current density of 17.10 mA/m2 and a voltage of 199 mV. The electrochemical analysis showed that the internal resistance was 312.58 Ω and the maximum specific capacitance value was 0.00020 F/g on day 30, which demonstrated mature biofilm production and its stability throughout the operation. The biofilm study and bacterial identification process revealed that the presence of conductive pili species (Bacillus genus) are the most dominant on the anode electrode. However, the present study also explained well the oxidation mechanism of rotten rice with phenol degradation. The most critical challenges for future recommendations are also enclosed in a separate section for the research community with concluding remarks.

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Section: Bacterial Identificationsupporting

confidence: 86%

Bioenergy Generation and Phenol Degradation through Microbial Fuel Cells Energized by Domestic Organic Waste

et al. 2023

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“…Several studies claim that the appearance of such structures on SEM indicates the presence of bacterial species. Although we observed other articles that followed the same pattern, this is just a hypothesis [57][58][59]. The anode biofilm was observed to possess the rod filament appendage's structure.…”

Section: Biological Characterizations Of Mfcmentioning

confidence: 67%

“…Although previous studies have shown that Pb 2+ and Hg 2+ levels of 50 to 200 mg/L are safe to treat, levels of more than 250 mg/L are a challenge for MFCs' systems [61]. We followed the same approach as other researchers and used EDX to analyze the biofilm [59,62]. It is obvious that EDX cannot provide information regarding metal ions.…”

Section: Biological Characterizations Of Mfcmentioning

confidence: 99%

Advancement in Microbial Fuel Cells Technology by Using Waste Extract as an Organic Substrate to Produce Energy with Metal Removal

et al. 2023

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Energy generation using microbial fuel cells (MFC) and removing toxic metal ions is a potentially exciting new field of study as it has recently attracted a lot of interest in the scientific community. However, MFC technology is facing several challenges, including electron production and transportation. Therefore, the present work focuses on enhancing electron generation by extracting sugarcane waste. MFC was successfully operated in a batch mode for 79 days in the presence of 250 mg/L Pb2+ and Hg2+ ions. Sugarcane extract was regularly fed to it without interruption. On day 38, the maximum current density and power density were recorded, which were 86.84 mA/m2 and 3.89 mW/m2, respectively. The electrochemical data show that a sufficient voltage generation and biofilm formation produce gradually. The specific capacitance was found to be 11 × 10−4 F/g on day 79, indicating the steady growth of biofilm. On the other hand, Pb2+ and Hg2+ removal efficiencies were found to be 82% and 74.85%, respectively. Biological investigations such as biofilm analysis and a recent literature survey suggest that conductive-type pili species can be responsible for energy production and metal removal. The current research also explored the oxidation method of sugarcane extract by bacterial communities, as well as the metal removal mechanism. According to the parameter optimization findings, a neutral pH and waste produced extract can be an optimal condition for MFC operation.

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“…For example, Van Der Velden et al ( 2022) calculated an internal resistance of 15.99 Ω in their MFCs using sediments from Saldanha Bay, which operated at pH 9 and used carbon electrodes [50]. In this same sense, Torlaema et al ( 2022) found an internal resistance of 38.87 Ω in their single-chamber MFCs, managing to generate voltage and current peaks of 168 mV and 0.168 mA using rice waste and graphite electrodes as a substrate [51]. Figure 4b shows the power density (PD) values in the current density (CD) of the MFCs, managing to show PDmax peaks of 475.32 ± 24.56 mW/cm 2 in CD of 5.539 A/cm 2 with a peak voltage of 1024.12 ± 25.16 mV.…”

Section: Results and Analysismentioning

confidence: 99%

Use of Tangerine Waste as Fuel for the Generation of Electric Current

et al. 2023

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Fruit waste has increased exponentially worldwide, within which tangerine is one of those that generates a greater amount of organic waste, which is currently not fully used. On the other hand, microbial fuel cells (MFCs) are presented as an opportunity to take advantage of organic waste to generate electricity, which is why the main objective of this research is to generate bioelectricity using tangerine waste as a substrate in microbial fuel cells using zinc and copper electrodes. It was possible to generate current and voltage peaks of 1.43973 ± 0.05568 mA and 1.191 ± 0.035 V on days eighteen and seventeen, respectively, operating with an optimum pH of 4.78 ± 0.46 and with electrical conductivity of the substrate of 140.07 ± 3.51 mS/cm, while the Brix degrees gradually decreased until the last day. The internal resistance determined was 65.378 ± 1.967 Ω, while the maximum power density was 475.32 ± 24.56 mW/cm2 at a current density of 5.539 A/cm2 with a peak voltage of 1024.12 ± 25.16 mV. The bacterium (Serratia fonticola) and yeasts (Rhodotorula mucilaginosa) were identified in the substrate with an identity of 99.57 and 99.50%, respectively. Finally, the cells were connected in series, managing to generate 3.15 V, which allowed the turning on of a red LED light.

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Degradation of Hydroquinone Coupled with Energy Generation through Microbial Fuel Cells Energized by Organic Waste

Cited by 12 publications

References 58 publications

Bioenergy Generation and Phenol Degradation through Microbial Fuel Cells Energized by Domestic Organic Waste

Bioenergy Generation and Phenol Degradation through Microbial Fuel Cells Energized by Domestic Organic Waste

Advancement in Microbial Fuel Cells Technology by Using Waste Extract as an Organic Substrate to Produce Energy with Metal Removal

Use of Tangerine Waste as Fuel for the Generation of Electric Current

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