Performance and mechanism of nitric oxide removal using a thermophilic membrane biofilm reactor

Wei, Zaishan; Huang, Qianru; Wang, J.B.; Huang, Zhenshan; Chen, Z.Y.; Li, B.R.

doi:10.1016/j.fuproc.2016.03.003

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…In particular, nitric oxide (NO) is deemed a culprit in air pollution, and it is important to lower its levels in cities. However, traditional purification techniques such as biofiltration, physical adsorption, and heterogeneous catalytic reduction and oxidation are not suitable for parts per billion (ppb)‐level NO treatment. Semiconductor photocatalysis technology using solar energy is the most effective method for NO removal at ppb level .…”

Section: Introductionmentioning

confidence: 99%

3D Aerogel of Graphitic Carbon Nitride Modified with Perylene Imide and Graphene Oxide for Highly Efficient Nitric Oxide Removal under Visible Light

Chen

et al. 2018

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3D materials are considered promising for photocatalytic applications in air purification because of their large surface areas, controllability, and recyclability. Here, a series of aerogels consisting of graphitic-carbon nitride (g-C N ) modified with a perylene imide (PI) and graphene oxide (GO) are prepared for nitric oxide (NO) removal under visible-light irradiation. All of the photocatalysts exhibit excellent activity in NO removal because of the strong light absorption and good planarity of PI-g-C N coupled with the favorable charge transport properties of GO, which slow the recombination of electron-hole pairs. The aerogel containing thiophene displays the most efficient NO removal of the aerogel series, with a removal ratio of up to 66%. Density functional theory calculations are conducted to explain this result and recycling experiments are carried out to verify the stability and recyclability of these photocatalysts.

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Section: Introductionmentioning

confidence: 99%

3D Aerogel of Graphitic Carbon Nitride Modified with Perylene Imide and Graphene Oxide for Highly Efficient Nitric Oxide Removal under Visible Light

Chen

et al. 2018

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“…Under anaerobic conditions the NO RE was as high as 99%, in contrast to the 55% obtained using an O 2 concentration of 6%. Similarly, negative effects were observed in another study (Niu et al, 2014) Wei et al (2016a) noted that, in some MBRs combining nitrification and aerobic denitrification, the effect of O 2 is not a critical operational parameter.…”

Section: Denitrification Processmentioning

confidence: 58%

“…Recently, the most widely used configuration in NO denitrification has been membrane bioreactors (MBRs), which provide a large gasliquid surface to improve mass transfer characteristics (Zhang et al, 2013). The most studied MBR configurations include thermophilic reactors (Razaviarani et al, 2019;Wei et al, 2016a) and catalytic membrane reactors (CMRs) (Wei et al, 2016b(Wei et al, , 2019.…”

Section: Denitrification Processmentioning

confidence: 99%

“…In MBR, RT and inlet NO concentrations are also linked to RE and EC. Wei et al (2016a) studied the influence of RT on an MBR and found that when the RT was increased from 24.5 to 49.0 s, the RE raised from 94 to 98% since increasing the RT provided enough time for NO to convert from a gas to a biofilm through the membrane, making it possible for the bacteria to degrade. Furthermore, they showed that both RE and EC decrease when there is an increase in the inlet NO concentration or a shortening of the gas residence time.…”

Section: Denitrification Processmentioning

confidence: 99%

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A review: Biological technologies for nitrogen monoxide abatement

et al. 2023

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“…At the same time, the biological flue gas desulfurization and denitrification technology has been gradually developed. Compared with the traditional process, the biological removal of SO 2 and NO x from flue gas has the advantages of low energy consumption and operation cost, convenient operation, less secondary pollution and higher removal efficiency [3,4]. It mainly includes biological flue gas desulfurization technology (Bio-FGD) and the integrated physicochemical and biological technique for NO x removal from flue gas (BioDeNOx, or chemical absorption biological reduction (CABR)).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Biological and Chemical Removal of Sulfate and Fe(II)EDTA-NO in Anaerobic Conditions and Regulation of Sulfate Reduction Products

Sun

2019

Minerals

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In the simultaneous flue gas desulfurization and denitrification by biological combined with chelating absorption technology, SO 2 and NO are converted into sulfate and Fe(II)EDTA-NO which need to be reduced in biological reactor. Increasing the removal loads of sulfate and Fe(II)EDTA-NO and converting sulfate to elemental sulfur will benefit the application of this process. A moving-bed biofilm reactor was adopted for sulfate and Fe(II)EDTA-NO biological reduction. The removal efficiencies of the sulfate and Fe(II)EDTA-NO were 96% and 92% with the influent loads of 2.88 kg SO 4 2− ·m −3 ·d −1 and 0.48 kg NO·m −3 ·d −1 . The sulfide produced by sulfate reduction could be reduced by increasing the concentrations of Fe(II)EDTA-NO and Fe(III)EDTA. The main reduction products of sulfate and Fe(II)EDTA-NO were elemental sulfur and N 2 . It was found that the dominant strain of sulfate reducing bacteria in the system was Desulfomicrobium. Pseudomonas, Sulfurovum and Arcobacter were involved in the reduction of Fe(II)EDTA-NO.

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Performance and mechanism of nitric oxide removal using a thermophilic membrane biofilm reactor

Cited by 13 publications

References 27 publications

3D Aerogel of Graphitic Carbon Nitride Modified with Perylene Imide and Graphene Oxide for Highly Efficient Nitric Oxide Removal under Visible Light

3D Aerogel of Graphitic Carbon Nitride Modified with Perylene Imide and Graphene Oxide for Highly Efficient Nitric Oxide Removal under Visible Light

A review: Biological technologies for nitrogen monoxide abatement

Simultaneous Biological and Chemical Removal of Sulfate and Fe(II)EDTA-NO in Anaerobic Conditions and Regulation of Sulfate Reduction Products

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