Enhanced methane production from acetate intermediate by bioelectrochemical anaerobic digestion at optimal applied voltages

Flores-Rodriguez, Carla; Reddy, C. Nagendranatha; Min, Booki

doi:10.1016/j.biombioe.2019.105261

Cited by 52 publications

(11 citation statements)

References 54 publications

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“…Methane yields for the high concentration were in the range of 346 mL•gCOD -1 for R4 and 299 mL•gCOD -1 for R5, which are near to the maximum theoretical value. Moreover these yields are also similar to the yields obtained in other integrated AD-MET systems using acetate [29] and glucose [30] as substrates. cases.…”

Section: 2-degradation Testssupporting

confidence: 84%

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Integrating microbial electrochemical technologies with anaerobic digestion to accelerate propionate degradation

Alonso

Escapa

Sotres

et al. 2020

Fuel

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The aim of this study is to evaluate the integration of microbial electrochemical technologies (MET) with anaerobic digestion (AD) to overcome AD limitations caused by propionate accumulation. The study focuses on understanding to what extent the inoculum impacts on the behaviour of the integrated systems (AD-MET) from the perspective of propionate degradation, methane production and microbial population dynamics. Three different inocula were used: two from environmental sources (anaerobic sludge and river sediment) and another one from a pre-enriched electroactive consortium adapted to propionate degradation. Contrary to expectations, the reactor inoculated with the pre-enriched consortium was not able to maintain its initial good performance in the long run, and the bioelectrochemical activity collapsed after three months of operation. In contrast, the reactor inoculated with anaerobic sludge, although it required a relatively longer time to produce any observable current, was able to maintain the electrogenic activity operation (0.8 A.m-2) as well as the positive contribution of AD-MET integration to tackle propionate accumulation and to enhance methane yield (338 mL.gCOD-1). However, it must also be highlighted that from a purely energetic point of view the AD-MET was not favorable.

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Section: 2-degradation Testssupporting

confidence: 84%

“…2). Moreover, no hydrogen was detected in the biogas (a result also observed in similar systems [29])…”

Section: 2-degradation Testssupporting

confidence: 65%

Integrating microbial electrochemical technologies with anaerobic digestion to accelerate propionate degradation

Alonso

Escapa

Sotres

et al. 2020

Fuel

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“…Some sensors also require the application of an adjustable but constant voltage to the anode to monitor the selectivity of the gas sensor, making the sensor specific to the target gas by promoting the desired redox reactions [26]. In reality, the potential of the anode does not remain constant due to the electrochemical reaction with gas.…”

Section: Electrochemical Sensorsmentioning

confidence: 99%

Gas sensing based on organic composite materials: Review of sensor types, progresses and challenges

Nasri

Pétrissans

Fierro

2021

Materials Science in Semiconductor Processing

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Over the past decade, organic semiconductors and renewable resources have aroused great interest in basic research and practical applications. Composites based on organic materials and materials of biological origin, if not all bio-based, are potentially abundant and partly biodegradable. These materials have demonstrated advantages making them ideally suited for gas-sensing applications. Herein, we present different detection principles of gas sensing, such as electrochemical, resistive, capacitive, and acoustic sensors. Besides, we describe sensing properties and suitable materials to enhance the selectivity, sensitivity and response/recovery time of gas sensors. In addition, an overview of different forms of materials based on renewable resources and inorganic/organic semiconductors, as well as the development of different types of sensors are discussed. Finally, challenges and future directions are examined in order to develop a low-cost microscale sensing technology using composite materials based on renewable resources. We anticipate that chemical engineering, computer science, machine learning and embedded systems can contribute to the development of new sensing materials.

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“…For instance, AD is typically limited with long hydraulic Design Configurations and Operating Parameters of Bio-electrochemically Enhanced Anaerobic Digestion A. Shabib, M. Abdallah, A. Shanableh, and M. Sartaj retention times (HRT) and low methane yield [4]. Additionally, the conventional anaerobic treatment is typically limited by organic removal at low organic loading rates (OLR) as higher rates lead to the accumulation of volatile fatty acids (VFAs), thus preventing optimum methane production [13]. Moreover, the AD of particular substrates, such as waste activated sludge (WAS), is limited by the complex organic degradation in the hydrolysis phase, thus leading to reduced methane production rate [14].…”

Section: A Limitationsmentioning

confidence: 99%

“…However, the methane yield was enhanced under all supplied voltages with around 111.03, 111.02, and 125.33 mL CH 4 /g-COD removed under 20, 80, and 120 mV, respectively. Another study evaluated the performance of MECs under a different set of supplied voltages, namely 0.5, 1.0, and 1.5 V [13]. The maximum biogas production was observed at applying 1.0 V with an average 166.14 mL produced compared to 106.24 and 55.76 mL produced under 0.5 and 1.5 V, respectively.…”

Section: A Supplied Voltagementioning

confidence: 99%

Design Configurations and Operating Parameters of Bio-electrochemically Enhanced Anaerobic Digestion

Shabib¹,

Abdallah²,

Shanableh³

et al. 2021

IJESD

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Bio-electrochemical anaerobic digestion (AD) is one of the most recent advancement in anaerobic treatment processes. Microbial electrolysis cells (MECs) are used for bio-electrochemical treatment, where the supplied external power is used to enhance the performance of AD. Multiple studies have investigated the viability of MECs under various operating parameters and for different organic wastes. The present paper aims at reviewing the latest literature regarding bio-electrochemical enhanced AD through MECs. It was concluded that MEC reactors significantly enhance AD performance under different supplied voltages, temperatures, electrodes configuration, as well as other operating parameters. Based on the compiled literature, further comprehensive life cycle assessment of MECs is recommended prior to any full-scale implementation.

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Enhanced methane production from acetate intermediate by bioelectrochemical anaerobic digestion at optimal applied voltages

Cited by 52 publications

References 54 publications

Integrating microbial electrochemical technologies with anaerobic digestion to accelerate propionate degradation

Integrating microbial electrochemical technologies with anaerobic digestion to accelerate propionate degradation

Gas sensing based on organic composite materials: Review of sensor types, progresses and challenges

Design Configurations and Operating Parameters of Bio-electrochemically Enhanced Anaerobic Digestion

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