Carbon-based conductive materials enhance biomethane recovery from organic wastes: A review of the impacts on anaerobic treatment

Kutlar, Feride Ece; Tunca, Berivan; Yılmazel, Yasemin Dilşad

doi:10.1016/j.chemosphere.2021.133247

Cited by 32 publications

(28 citation statements)

References 71 publications

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“…In the case of AD-MEC-GAC reactors, regardless of the buffer medium type, the charge accumulation graph plateaued between 15 and 20 days after the start of batch cycles. This may be explained by the presence of GAC in the reactors, which decreased the inhibitory effect of 100 mM PBS . Therefore, both the microorganisms present in the bulk solution and exoelectrogens on the anode may have contributed to organic consumption.…”

Section: Resultsmentioning

confidence: 99%

“…Integrating AD systems with microbial electrolysis cells (MECs) and amendment of AD reactors with conductive materials are among other recently tapped innovative technologies. Both of these strategies rely on the enrichment of electro-active microorganisms (EAMs) in the digesters and have been reported to significantly improve CH 4 production performances of various digesters. ,− Other impacts such as alleviation of inhibition may also be effective in the performance enhancement of conductive material-amended AD reactors. For example, a 17 times-higher CH 4 yield was attained with dog food representing an organic fraction of municipal solid waste (OFMSW) with 50 g/L of granular activated carbon (GAC) addition and the authors attributed this to prevention of methanogen inhibition via adsorption of hydrogen (H 2 ) in the reactor .…”

Section: Introductionmentioning

confidence: 99%

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Methane Recovery from Cattle Manure: Role of Granular Activated Carbon Amendment into Anaerobic Digestion-Microbial Electrolysis Cells (AD-MECs) Integrated Systems

Ghaderikia,

Yilmazel

2023

ACS Sustainable Chem. Eng.

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Anaerobic digestion (AD) of manure is commonly applied, yet the low methane (CH 4 ) production yield and rate are among the limitations of the process. AD integration with microbial electrolysis cells (MECs) and amendment of conductive materials to the digesters can compensate for the limitations via the enrichment of electroactive microorganisms. For the first time in the literature CH 4 production performances of cattle manure-fed AD-MECs were assessed under varying conditions, namely, by placing biofilm-attached electrodes (bioelectrodes) versus bare electrodes, the amendment of biofilm-attached granular activated carbon (BioGAC) particles versus fresh GAC particles under two different media (phosphate buffer saline (PBS) vs salt medium). The CH 4 yield of the AD reactor in PBS medium was notably low (50 mL/g VS added ) due to a severe P inhibition as compared to 247 mL of CH 4 /g VS added in the salt medium. AD-MECs alleviated inhibitory effects, that is, increased the yield and rate of CH 4 production and reduced the start-up time. Of all the reactors, the performance of BioGACamended AD-MECs were superior with a 4.4 times higher yield (∼223 mL CH 4 /g VS added ) than the control with PBS and a 1.3 times higher yield (∼318 mL CH 4 /g VS added ) than the control with salt medium. Despite requiring an electrical energy input, BioGAC-amended AD-MECs remain energy-positive compared to the control.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methane Recovery from Cattle Manure: Role of Granular Activated Carbon Amendment into Anaerobic Digestion-Microbial Electrolysis Cells (AD-MECs) Integrated Systems

Ghaderikia,

Yilmazel

2023

ACS Sustainable Chem. Eng.

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“…However, variations in the experimental conditions resulted in considerable differences in methane production. Similarly, Kutlar et al investigated 10 different carbon-based materials and discovered that granular activated carbon (GAC), biochar, and carbon cloth were the most frequently utilized materials. Compared to biochar, GAC has a higher electrical conductivity owing to the characteristics of GAC, such as its porosity, expansive surface area, and aromatic structure, via which microbes facilitate electron transport through GAC .…”

Section: Introductionmentioning

confidence: 99%

Adding Granular Activated Carbon and Zerovalent Iron to the High-Solid Anaerobic Digestion System of the Organic Fraction of Municipal Solid Waste: Anaerobic Digestion Performance and Microbial Community Analysis

Zhang,

Yuan,

Zuo

et al. 2024

ACS Omega

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Anaerobic digestion (AD) performance and microbial dynamics were investigated in a high-solid anaerobic digestion (HSAD) system of the organic fraction of municipal solid waste (OFMSW). 1, 5, 10, and 15% (w/w, dry weight of the OFMSW) of granular activated carbon (GAC) and zerovalent iron (ZVI) were added to the HSAD system. The results showed that adding ZVI and GAC can improve the methane yield of the OFMSW. Notably, R-(GAC + ZVI) exhibited the highest cumulative methane yield of 343.0 mL/gVS, which was 57.1% higher than that of the R-control. At the genus level, the dominant bacteria included norank_f__norank_o__MBA03, norank_f__norank_o__norank_c__norank_p__Firmicutes, Fastidiosipila, norank_f__Rikenellaceae, and Sphaerochaeta, while Methanoculleus, Methanobacterium, and Methanosarcina were the dominant archaea. The highest relative abundance of norank_f__norank_o__norank_c__norank_p__Firmicutes was 30.8% for the R-(GAC + ZVI), which was 71.4% higher than that of the R-control. The relative abundance of Methanoculleus and Methanobacterium for the R-(GAC + ZVI) and the R-control group accounted for 79.0 and 90.8% of the total archaeal abundance, respectively. Additionally, the relative abundance of Methanosarcina was 10.6% for R-(GAC + ZVI), which was higher than that of the R-control (1.1%). After the addition of GAC and ZVI, the electron transfer capacity of the HSAD system was enhanced, resulting in promoted methane production. Thus, the simultaneous addition of GAC and ZVI to the HSAD system can be an effective strategy to promote the cumulative methane yield of the OFMSW.

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“…The syntrophic interactions between bacteria and methanogens are the key to effective process performance and this interaction is based on electron transfer between different microbial communities (Park et al, 2018). Recent studies suggest that bacteria and methanogenic archaea perform direct interspecies electron transfer (DIET) via the use of conductive materials, leading to higher efficiency digestion process (Kutlar et al, 2022;Liu et al, 2012). Studies showed that DIET via conductive materials enables faster electron transfer than electron transfer via intermediates such as acetate and hydrogen as in conventional systems (He et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…This in turn is related to the faster utilization of feed and enhanced process performance. Further, amendment of conductive materials may lower the impact of inhibitory compounds, and decrease the oxidation-reduction potential of the medium, hence offering a more suitable environment for methanogenic activity (Kutlar et al, 2022). Therefore, this study aims to investigate the effect of conductive material amendment on biomethane production from cattle manure.…”

Section: Introductionmentioning

confidence: 99%

The impact of hematite on the anaerobic digestion of cattle manure

ODABAŞ

Yılmazel

2023

International Journal of Agriculture Environment and Food Sciences

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A metal-based conductive material, hematite (Fe2O3), was used as an amendment in the anaerobic digestion process to determine the effects on the performance of anaerobic digestion of cattle manure (CM) at mesophilic temperature (350C). The first set of experiments (Set 1) was designed to assess whether there is a need to supplement nutrients for the effective digestion of CM. To this purpose, basal medium (BM) composed of macro nutrients, micro nutrients, reducing agent, and buffer was added to the reactors and a biochemical methane production assay was conducted. The presence of BM showed negative impacts on the anaerobic digestion of CM and its absence caused up to 40% higher methane production yield. In Set 2 experiments, the impact of hematite addition on methane production performance was determined. Two different dosages as 20 mM Fe (Fe20) and 50 mM Fe (Fe50) were applied to the batch reactors. Hematite amendments increased methane yield; at Fe20 (131 ± 2.6 mL CH4/g VSadded) the increase was around 8% and at Fe50 (135 ± mL 0.2 CH4/g VSadded) the increase was around 12% as compared to the control. Further, up to 36% increase in the methane production rate was calculated via Modified Gompertz fitting.

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Carbon-based conductive materials enhance biomethane recovery from organic wastes: A review of the impacts on anaerobic treatment

Cited by 32 publications

References 71 publications

Methane Recovery from Cattle Manure: Role of Granular Activated Carbon Amendment into Anaerobic Digestion-Microbial Electrolysis Cells (AD-MECs) Integrated Systems

Methane Recovery from Cattle Manure: Role of Granular Activated Carbon Amendment into Anaerobic Digestion-Microbial Electrolysis Cells (AD-MECs) Integrated Systems

Adding Granular Activated Carbon and Zerovalent Iron to the High-Solid Anaerobic Digestion System of the Organic Fraction of Municipal Solid Waste: Anaerobic Digestion Performance and Microbial Community Analysis

The impact of hematite on the anaerobic digestion of cattle manure

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