A photodriven energy efficient membrane process for trace VOC removal from air: First step to a smart approach

Gérardin, Fabien; Cloteaux, Anaëlle; Simard, Julien; Favre, Éric

doi:10.1016/j.cej.2021.129566

Cited by 11 publications

(6 citation statements)

References 47 publications

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“…The oxidation reaction was carried out at 65 °C with a stirring speed of 500 rpm. At the corresponding time (1,3,5,7,11, and 15 h), the reaction was stopped, and glass bottle reactor was cooled down to room temperature immediately with cold water within 3 minutes. The resulting solution was centrifuged (9000 rpm) and then analyzed by gas chromatography (Agilent 7820A).…”

Section: Styrene Oxidation Reactionmentioning

confidence: 99%

“…[6][7][8] In the past decades, various strategies have been reported such as gas separation/adsorption, biological treatment, photocatalysis, and chemical treatment. [9][10][11] Among these methods, catalytic decomposition or conversion of VOCs to CO 2 , H 2 O or value-added products under mild reaction conditions was regarded as one of the most promising technologies. Heterogeneous catalysts with advantages of recovery and recycling compared with their homogeneous counterparts have been widely used in these heterogeneous VOC conversion reactions.…”

Section: Introductionmentioning

confidence: 99%

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Significantly boosted activity for styrene oxidation through simultaneous regulation of porosity and copper sites in microporous metal–organic framework Cu-BTC

Guo

Zhang

Cheng

et al. 2023

Catal. Sci. Technol.

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Section: Styrene Oxidation Reactionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Significantly boosted activity for styrene oxidation through simultaneous regulation of porosity and copper sites in microporous metal–organic framework Cu-BTC

Guo

Zhang

Cheng

et al. 2023

Catal. Sci. Technol.

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“…Over the past few decades, a mass of photocatalysts doped with various materials or elements have been applied in the removal of VOCs, such as N-doped TiO 2 [65], N, S-doped TiO 2 [66], Ni-doped SnO 2 /TiO 2 [67], Fe-doped TiO 2 [68], and Pt-doped TiO 2 [69]. Doping will change the original crystal structure, and the introduction of appropriate element or materials can improve the photocatalytic properties and surface structure of the photocatalyst: promote charge transfer, inhibit electron-hole recombination, broaden the light response range, and improve the specific surface area [10] The band gap of the photocatalyst depends on the crystal composition and structure. The formation of photo-generated charge carriers (e − , h + ) is a prerequisite for PCO.…”

Section: Doping Of the Metal-containing Photocatalystsmentioning

confidence: 99%

“…Over the past few decades, several cleaning techniques including ventilation [7], adsorption [8], biological treatment [9], gas separation [10], and chemical oxidation [1] have been proposed for the removal of VOCs, but most of these techniques are limited by their insurmountable shortcomings. For example, ventilation is usually limited by efficiency, time, and outdoor air quality [7]; absorption requires adsorbents with high adsorption capacity and high regeneration ability [11]; biological treatment has high requirements for strain screening and culture; and gas separation and chemical oxidation are difficult to apply in indoor environments due to their high cost and operating conditions [12].…”

Section: Introductionmentioning

confidence: 99%

Nano Metal-Containing Photocatalysts for the Removal of Volatile Organic Compounds: Doping, Performance, and Mechanisms

et al. 2022

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Volatile organic compounds (VOCs) in indoor air are considered a major threat to human health and environmental safety. The development of applicable technologies for the removal of VOCs is urgently needed. Nowadays, photocatalytic oxidation (PCO) based on metal-containing photocatalysts has been regarded as a promising method. However, unmodified photocatalysts are generally limited in applications because of the narrow light response range and high recombination rate of photo-generated carriers. As a result, nano metal-containing photocatalysts doped with elements or other materials have attracted much attention from researchers and has developed over the past few decades. In addition, different doping types cause different levels of catalyst performance, and the mechanism for performance improving is also different. However, there are few reviews focusing on this aspect, which is really important for catalyst design and application. This work aims to give a comprehensive overview of nano metal-containing photocatalysts with different doping types for the removal of VOCs in an indoor environment. First, the undoped photocatalysts and the basic mechanism of PCO is introduced. Then, the application of metal doping, non-metal doping, co-doping, and other material doping in synthetic metal-containing photocatalysts are discussed and compared, respectively, and the synthesis methods, removal efficiency, and mechanisms are further investigated. Finally, a development trend for using nano metal-containing photocatalysts for the removal of VOCs in the future is proposed. This work provides a meaningful reference for selecting effective strategies to develop novel photocatalysts for the removal of VOCs in the future.

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“…Biofiltration is the alternative technique, which is a biological process requiring low maintenance cost, is more effective, generates lower amounts of harmful byproducts, and has a wide variety (range) of applications . Its performance can be affected by changing temperature, moisture content, and discontinuous pollutant supplies. − The removal efficiencies for H 2 S degeneration are, for the most part, comparable to VOC contaminates; the convergences of specific VOC types are inferior. − …”

Section: Introductionmentioning

confidence: 99%

Air Pollutants Removal Using Biofiltration Technique: A Challenge at the Frontiers of Sustainable Environment

et al. 2022

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Air pollution is a central problem faced by industries during the production process. The control of this pollution is essential for the environment and living organisms as it creates harmful effects. Biofiltration is a current pollution management strategy that concerns removing odor, volatile organic compounds (VOCs), and other pollutants from the air. Recently, this approach has earned vogue globally due to its low-cost and straightforward technique, effortless function, high reduction efficacy, less energy necessity, and residual consequences not needing additional remedy. There is a critical requirement to consider sustainable machinery to decrease the pollutants arising within air and water sources. For managing these different kinds of pollutant reductions, biofiltration techniques have been utilized. The contaminants are adsorbed upon the medium exterior and are metabolized to benign outcomes through immobilized microbes. Biofiltration-based designs have appeared advantageous in terminating dangerous pollutants from wastewater or contaminated air in recent years. Biofiltration uses the possibilities of microbial approaches (bacteria and fungi) to lessen the broad range of compounds and VOCs. In this review, we have discussed a general introduction based on biofiltration and the classification of air pollutants based on different sources. The history of biofiltration and other mechanisms used in biofiltration techniques have been discussed. Further, the crucial factors of biofilters that affect the performance of biofiltration techniques have been discussed in detail. Finally, we concluded the topic with current challenges and future prospects.

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A photodriven energy efficient membrane process for trace VOC removal from air: First step to a smart approach

Cited by 11 publications

References 47 publications

Significantly boosted activity for styrene oxidation through simultaneous regulation of porosity and copper sites in microporous metal–organic framework Cu-BTC

Significantly boosted activity for styrene oxidation through simultaneous regulation of porosity and copper sites in microporous metal–organic framework Cu-BTC

Nano Metal-Containing Photocatalysts for the Removal of Volatile Organic Compounds: Doping, Performance, and Mechanisms

Air Pollutants Removal Using Biofiltration Technique: A Challenge at the Frontiers of Sustainable Environment

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