Current advances of VOCs degradation by bioelectrochemical systems: A review

Zhang, Shihan; You, Juping; Kennes, Christian; Cheng, Zhuowei; Ye, Jiexu; Chen, Dongzhi; Chen, Jianmeng; Wang, Li Dong

doi:10.1016/j.cej.2017.11.014

Cited by 216 publications

(48 citation statements)

References 81 publications

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“…As a representative VOC, toluene has been widely investigated as a model compound for reducing pollution of the environment. Several technologies such as adsorption, biological degradation, and catalytic oxidation have been developed to control toluene emission [4,5]. Among these, catalytic combustion is considered one of the most efficient methods for the elimination of toluene [6,7].…”

Section: Introductionmentioning

confidence: 99%

Insights into the Pyrolysis Processes of Ce-MOFs for Preparing Highly Active Catalysts of Toluene Combustion

Sun

et al. 2019

Catalysts

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Metal organic frameworks (MOFs) have recently been used as precursors of the catalysts for the combustion of volatile organic compounds (VOCs). In the present work, three kinds of CeO 2 catalysts were successfully synthesized from Ce-MOF-808, Ce-BTC, and Ce-UiO-66, with specific topological structures and coordinate environments. Catalysts with small particle size, stacking mode, and structural defects could be created by pyrolysis of Ce-MOFs, which affects the activity in the toluene combustion significantly. Raman spectra, XPS, and OSC studies were performed to reveal the formation of defect sites. The thermal redox properties were determined by H 2 -TPR. Catalytic activity tests were conducted on the toluene combustion, and CeO 2 -MOF-808 showed the best catalytic performance (T90 = 278 • C) due to its having the largest specific surface area, abundant active surface oxygen species, and low-temperature reducibility.

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Section: Introductionmentioning

confidence: 99%

Insights into the Pyrolysis Processes of Ce-MOFs for Preparing Highly Active Catalysts of Toluene Combustion

Sun

et al. 2019

Catalysts

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“…VOCs emitted from various industrial processes, such as those from chemical plant, pharmaceutical plant, wastewater treatment plant, petrochemical plant, miscellaneous storage tanks and municipal solid waste composting, account for approximately 50% of the total emissions in China. These emissions severely and directly threaten human health and the ecological environment, because the majority of them are irritant, toxic and even mutagenic and carcinogenic . Under sunlight, VOCs can further react with NO x , hydrocarbons and oxidants in the atmosphere to produce photochemical smog, thereby leading to significant indirect damage to the environment and human health .…”

Section: Introductionmentioning

confidence: 99%

“…Various technologies, such as advanced oxidation processes, biotechnology, bioelectrochemical systems and adsorption, are used to purify waste gas containing VOCs. Among these technologies, the adsorption method is favored owing to its wide range of applications, low operating costs, easy operation, low‐cost and readily available raw materials and absence of secondary contaminants with substantial toxicity.…”

Section: Introductionmentioning

confidence: 99%

“…These emissions severely and directly threaten human health and the ecological environment, because the majority of them are irritant, toxic and even mutagenic and carcinogenic. 4,5 Under sunlight, VOCs can further react with NO x , hydrocarbons and oxidants in the atmosphere to produce photochemical smog, thereby leading to significant indirect damage to the environment and human health. 6 Thus stringent environmental regulations have been increased, and the dangerous VOCs should be urgently removed from polluted air to meet environmental regulations.…”

Section: Introductionmentioning

confidence: 99%

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Coadsorption of gaseous xylene, ethyl acetate and water onto porous biomass carbon foam pellets derived from liquefied Vallisneria natans waste

Sun

Yuan

Liu

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND Only a few studies have focused on the purification of waste gas containing a mixture of volatile organic compounds (VOCs) with engineered biochar. The adsorption behaviors of gaseous xylene and ethyl acetate (EA) individually and in binary mixture onto porous biomass carbon foam pellets (BCFPs) were studied by static headspace gas chromatography. RESULTS The removal efficiency nearly reached 100% for 17.32 mg L−1 xylene and 18.02 mg L−1 EA within 120 min at a BCFP dosage of 0.2 g L−1, a temperature of 40 °C and a relative humidity of 30%. The adsorption behavior followed the pseudo‐second‐order kinetic model for single and binary mixtures of xylene and EA. The coexistence of xylene had considerable influence on the adsorption performance of EA, whereas the coexistence of EA exhibited minimal effect on the adsorption performance of xylene. The monolayer adsorption capacities of sole xylene and EA were 250.63 and 206.61 mg g−1 respectively. The total adsorption capacity reached 322.36 mg g−1 for the binary mixture, but the adsorption capacity for sole xylene and EA decreased because of competitive adsorption. The adsorption process was spontaneous and endothermic. Pore filling was involved in the adsorption of xylene and EA onto BCFPs. Meanwhile, xylene adsorption was involved in the hydrophobic interaction and π–π electron dispersion interaction. CONCLUSION BCFPs are an effective adsorbent for VOC adsorptive removal from waste gas. Competitive adsorption between xylene and EA on BCFPs was determined. Results indicated that the physicochemical properties of VOCs had an effect on the adsorption performance. © 2019 Society of Chemical Industry

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“…Volatile organic compounds (VOCs) are harmful to human health and can cause many environmental problems, such as global warming, ozone depletion and photochemical smog. [1][2][3] Various technologies have been developed for the removal of VOCs, including physical (adsorption, condensation and membrane separation), chemical (thermal combustion and catalytic oxidation) and biological methods. 4 However, traditional methods are generally associated with some technical or economic disadvantages for the removal of dilute concentrations of VOCs (<1000 ppm).…”

Section: Introductionmentioning

confidence: 99%

Removal of chlorobenzene using a sequential adsorption–plasma catalytic system over Ag‐, Ce‐ and Mn‐modified activated carbon catalysts

Jiang

Cao

Chen

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND A dielectric barrier discharge reactor coupled with a series of activated carbon (AC) catalysts was applied to remove low concentrations of chlorobenzene. The catalysts were prepared via an impregnation method and their adsorption capacity and plasma‐catalytic ability examined in a sequential adsorption–plasma oxidation process. RESULTS Ag/AC had the longest breakthrough time and highest breakthrough capacity among the catalysts studied. At the discharge stage, the Ag/AC catalyst had the highest CO2 yield, chlorobenzene mineralization rate and carbon balance, and the lowest emission of chlorobenzene when compared with the other catalysts under the same conditions. However, the Ag/AC catalyst exhibited the worst reducing ozone generation performance, while the Mn/AC catalyst showed the best ozone decomposition ability. The organic intermediates produced using Ag/AC and Ce/AC were simpler and in lower concentrations than those formed using Mn/AC. The adsorption capacity and catalytic activity of the Ag/AC catalyst showed no obvious decrease after five cycles. Fourier transform infrared and scanning electron microscopy–energy dispersive spectroscopy analyses after the reaction showed that some nitrogen organic intermediates and chlorine substances produced via the degradation of chlorobenzene were adsorbed onto the catalyst surface. CONCLUSIONS Ag/AC exhibited a longer breakthrough time, higher breakthrough capacity, higher CO2 yield, less chlorobenzene emission and better carbon balance when compared with the other catalysts. © 2019 Society of Chemical Industry

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Current advances of VOCs degradation by bioelectrochemical systems: A review

Cited by 216 publications

References 81 publications

Insights into the Pyrolysis Processes of Ce-MOFs for Preparing Highly Active Catalysts of Toluene Combustion

Insights into the Pyrolysis Processes of Ce-MOFs for Preparing Highly Active Catalysts of Toluene Combustion

Coadsorption of gaseous xylene, ethyl acetate and water onto porous biomass carbon foam pellets derived from liquefied Vallisneria natans waste

Removal of chlorobenzene using a sequential adsorption–plasma catalytic system over Ag‐, Ce‐ and Mn‐modified activated carbon catalysts

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