Conductive magnetite nanoparticles trigger syntrophic methane production in single chamber microbial electrochemical systems

Vu, Mung Thi; Noori, Md. T.; Min, Booki

doi:10.1016/j.biortech.2019.122265

Cited by 55 publications

(12 citation statements)

References 38 publications

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“…34 The EPS produced by MCB could trap most of the HA, thus interfering with material transfer and affecting electron transport. 35 HA particles are trapped by EPS and form a membranelike substance that acts as a physical barrier to protect HA, preventing HA particles from attaching to the cell surface or moving into the cell membrane. However, some HA remains capable of perforating the EPS barrier and the cell surface and thus accessing the cell.…”

Section: Resultsmentioning

confidence: 75%

“… 34 The EPS produced by MCB could trap most of the HA, thus interfering with material transfer and affecting electron transport. 35 …”

Section: Resultsmentioning

confidence: 99%

“…It was observed that large aggregates of HA were detected on the cell surface. , Some HA enters the interior of cells and causes damage to the EPS components . The EPS produced by MCB could trap most of the HA, thus interfering with material transfer and affecting electron transport …”

Section: Resultsmentioning

confidence: 99%

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Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Wang

et al. 2022

ACS Omega

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Hydroxyapatite (HA) had the effect of maintaining the pH balance of the reaction system and promoting enzyme activity. In this work, hydroxyapatite was synthesized by coprecipitation and characterized for biohydrogen (bioH 2 ) production from glucose. The highest bioH 2 yield obtained was 182.33 ± 2.41 mL/g glucose, amended with an optimal dosage of 400 mg/L HA, which was a 55.80% higher bioH 2 yield compared with the control group without any addition. The results indicated that HA facilitated the deterioration of organic substances and increased the concentration of soluble microbial products (SMPs). Microbial community analysis revealed that HA significantly increased the abundance of Firmicutes from 35.27% (0 mg/L, HA) to 76.41% (400 mg/L, HA), which played an essential role in bioH 2 generation. In particular, the abundance of Clostridium sensu stricto 1 increased from 15.33% (0 mg/L HA) to 45.17% (400 mg/L HA) and became the dominant bacteria. The results also indicated that HA likely improves bioH 2 production from organic wastewater in practice.

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Section: Resultsmentioning

confidence: 75%

“… 34 The EPS produced by MCB could trap most of the HA, thus interfering with material transfer and affecting electron transport. 35 …”

Section: Resultsmentioning

confidence: 99%

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Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Wang

et al. 2022

ACS Omega

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“…Magnetite (Fe3O4) is an iron oxide of the spinel mineral group (She et al, 2021). Magnetite has been applied to adsorption for water treatment (Abdullah et al, 2022;Paz et al, 2022), catalysts (Liu et al, 2018), membrane processes (Vu et al, 2020), and biodegradation (Shen et al, 2021). Magnetite, in adsorption, imparts its magnetic properties to HA, and it can separate the adsorbent from the solution using an external magnet (Lee and Kim, 2022).…”

Section: Introductionmentioning

confidence: 99%

Selectivity of Malachite Green on Cationic Dye Mixtures Toward Adsorption on Magnetite Humic Acid

Ahmad¹,

Arsyad²,

Royani³

et al. 2022

Environ. Nat. Resour. J.

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Magnetite humic acid (MHA) was successfully synthesized by the coprecipitation method followed by hydrothermal process, as evidenced by the XRD, FTIR, VSM, and SEM analysis characterization results. XRD diffraction shows diffraction peaks at 2θ=21.53º, 35.95º, and 57.93º. The FTIR spectra have a typical absorption at 3,410, 1,589, 1,396, 1,026, 910, 794, and 540 cm-1. Magnetite humic acid was paramagnetic with magnetization (Ms) 17.04 emu/g. Humic acid and magnetite humic acid have an irregular structure; the morphology of magnetite humic acid is smoother than humic acid. Malachite green was more selective than methylene blue and rhodamine B on magnetite humic acid. The adsorption of malachite green on humic acid and magnetite humic acid was carried out at pHpzc 8.06 and 6.08. The adsorption capacity (Qmax) of humic acid (77.519 mg/g) and magnetite humic acid (169.492 mg/g) were found with pseudo-second-order kinetic and Langmuir isotherm models. After five regeneration cycles, the adsorption percentages of malachite green with humic acid and magnetite humic acid ranged from 94.67-61.37% and 62.03-21.11%, respectively. Magnetite humic acid has high stability and reusability. The good regeneration of MHA was supported by the XRD diffractogram. Magnetic properties in the material simplify the adsorption process and minimize the potential for damage to the surface of the material.

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“…25 Among the most explored engineered nanomaterials, ironbased nanoparticles have attracted great attention because of the potential application following an environmental sustainability approach. 26 Magnetite (Fe 3 O 4 ) nanoparticles, the most common oxidation state of iron, 27 is a promising nanomaterial attributed to their exceptional physicochemical properties, such as nontoxicity, 28 superparamagnetism, 29 adsorption strength, 30 and electrical capacity. 31 This allows that Fe 3 O 4 nanoparticles can be applied in an extensive number of applications related to environmental remediation.…”

Section: ■ Introductionmentioning

confidence: 99%

Environmental and Exergetic Analysis of Large-Scale Production of Citric Acid-Coated Magnetite Nanoparticles via Computer-Aided Process Engineering Tools

et al. 2021

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Considering that functional magnetite (Fe 3 O 4 ) nanoparticles with exceptional physicochemical properties can be highly applicable in different fields, scaling-up strategies are becoming important for their large-scale production. This study reports simulations of scaled-up production of citric acid-coated magnetite nanoparticles (Fe 3 O 4 -cit), aiming to evaluate the potential environmental impacts (PEIs) and the exergetic efficiency. The simulations were performed using the waste reduction algorithm and the Aspen Plus software. PEI and energy/exergy performance are calculated and quantified. The inlet and outlet streams are estimated by expanding the mass and energy flow, setting operating parameters of processing units, and defining a thermodynamic model for properties estimation. The high environmental performance of the production process is attributed to the low outlet rate of PEI compared to the inlet rate. The product streams generate low PEI contribution (−3.2 × 10 3 PEI/y) because of the generation of environmentally friendlier substances. The highest results in human toxicity potential (3.2 × 10 3 PEI/y), terrestrial toxicity potential (3.2 × 10 3 PEI/y), and photochemical oxidation potential (2.6 × 10 4 PEI/y) are attributed to the ethanol within the waste streams. The energy source contribution is considerably low with 27 PEI/y in the acidification potential ascribed to the elevated levels of hydrogen ions into the atmosphere. The global exergy of 1.38% is attributed to the high irreversibilities (1.7 × 10 5 MJ/h) in the separation stage, especially, to the centrifuge CF-2 (5.07%). The sensitivity analysis establishes that the global exergy efficiency increases when the performance of the centrifuge CF-2 is improved, suggesting to address enhancements toward low disposal of ethanol in the wastewater.

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Conductive magnetite nanoparticles trigger syntrophic methane production in single chamber microbial electrochemical systems

Cited by 55 publications

References 38 publications

Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Selectivity of Malachite Green on Cationic Dye Mixtures Toward Adsorption on Magnetite Humic Acid

Environmental and Exergetic Analysis of Large-Scale Production of Citric Acid-Coated Magnetite Nanoparticles via Computer-Aided Process Engineering Tools

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