Removal of Volatile Organic Compounds from polluted air
01 Nov 2000-Journal of Loss Prevention in The Process Industries (Elsevier BV)-Vol. 13, Iss: 6, pp 527-545
TL;DR: There are many techniques available to control VOCs emission (destruction based and recovery based) with many advantages and limitations as mentioned in this paper, however, deciding on a particular technique becomes a difficult task.
Abstract: Volatile Organic Compounds (VOCs) are among the most common air pollutants emitted from chemical, petrochemical, and allied industries. VOCs are one of the main sources of photochemical reaction in the atmosphere leading to various environmental hazards; on the other hand, these VOCs have good commercial value. Growing environmental awareness has put up stringent regulations to control the VOCs emissions. In such circumstances, it becomes mandatory for each VOCs emitting industry or facility to opt for proper VOCs control measures. There are many techniques available to control VOCs emission (destruction based and recovery based) with many advantages and limitations. Therefore, deciding on a particular technique becomes a difficult task. This article illustrates various available options for VOCs control. It further details the merits, demerits and applicability of each option. The authors hope that this article will help in critically analysing the requirements and accordingly decide on the appropriate strategy to control VOCs.
Citations
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TL;DR: In this article, a review discusses recent developments in catalytic systems for the destruction of volatile organic compounds (VOCs) and their sources of emission, mechanisms of catalytic destruction, the causes of catalyst deactivation, and catalyst regeneration methods.
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TL;DR: In this article, the development of efficient adsorbents and catalysts for VOCs with varied nature are discussed, and the perspectives on the potential future directions of the adsorptive removal and catalytic oxidation of VOC are given.
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TL;DR: The principles of generating NTPs are outlined and literature on the abatement of VOCs is reviewed in close detail, with special attention to the influence of critical process parameters on the removal process.
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TL;DR: In this paper, a review of photocatalytic oxidation of various pollutants, such as volatile organic compounds (VOCs) or inorganic gaseous (NOx, SOx, CO, H2S and ozone), for commercialized air purification is presented.
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TL;DR: This review provides an overview of three main categories of nanomaterials (inorganic, carbon-based, and polymeric-based materials) used for environmental remediation.
Abstract: Environmental remediation relies mainly on using various technologies (eg, adsorption, absorption, chemical reactions, photocatalysis, and filtration) for the removal of contaminants from different environmental media (eg, soil, water, and air) The enhanced properties and effectiveness of nanotechnology-based materials makes them particularly suitable for such processes given that they have a high surface area-to-volume ratio, which often results in higher reactivity This review provides an overview of three main categories of nanomaterials (inorganic, carbon-based, and polymeric-based materials) used for environmental remediation The use of these nanomaterials for the remediation of different environmental contaminants—such as heavy metals, dyes, chlorinated organic compounds, organophosphorus compounds, volatile organic compounds, and halogenated herbicides—is reviewed Various recent examples are extensively highlighted focusing on the materials and their applications
347 citations
Cites background from "Removal of Volatile Organic Compoun..."
...Particulate matter, heavy metals, pesticides, herbicides, fertilizers, oil spills, toxic gases, industrial effluents, sewage, and organic compounds are just a few examples of the many concerning contaminants [2,3]....
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References
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TL;DR: In this paper, the authors present correlation, analysis, and prediction of adsorption equilibria, including correlation, correlation, and analysis of adorption Equilibria.
Abstract: List of Symbols. Microporous Adsorbents. Physical Adsorption and the Characterization of Porous Adsorbents. Thermodynamics of Adsorption. Correlation, Analysis, and Prediction of Adsorption Equilibria. Diffusion in Porous Media. Kinetics of Sorption in Batch Systems. Flow Through Packed Beds. Dynamics of Adsorption Columns: Single--Transition Systems. Dynamics of Adsorption Columns: Multiple Transition Systems. Chromatographic Separation Processes. Adsorption Separation Processes: I. Cyclic Batch Systems. Adsorption Separation Processes: II. Continous Counter Current Systems. Appendixes. Index.
4,577 citations
"Removal of Volatile Organic Compoun..." refers background in this paper
...For details please refer to Ruthven (1984). A very low VOC concentration in exhaust air is...
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...For details please refer to Ruthven (1984)....
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Book•
01 Jan 1958
TL;DR: Plant design and economics for chemical engineers, Plant design for chemical engineering, and plant design for plant design and economic analysis are discussed in this paper, where the authors propose a plant design approach based on chemical engineering.
Abstract: Plant design and economics for chemical engineers , Plant design and economics for chemical engineers , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
3,016 citations
"Removal of Volatile Organic Compoun..." refers background in this paper
...The reader should also consult Peters & Timmerhause (1991) for absorption equipment costs....
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... Peters & Timmerhause (1991) have given heat exchanger costs as a function of surface area....
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TL;DR: The history and current status of biofiltration is reviewed, its underlying scientific and engineering principles are outlined, and the applicability of biofilters for a wide range of specific emission sources are discussed.
Abstract: Biofiltration is a relatively recent air pollution control (APC) technology in which off-gases containing biodegradable volatile organic compounds (VOC) or inorganic air toxics are vented through a biologically active material. This technology has been successfully applied in Germany and The Netherlands in many full-scale applications to control odors, VOC and air toxic emissions from a wide range of industrial and public sector sources. Control efficiencies of more than 90 percent have been achieved for many common air pollutants. Due to lower operating costs, biofiltration can provide significant economic advantages over other APC technologies if applied to off-gases that contain readily biodegradable pollutants in low concentrations. Environmental benefits include low energy requirements and the avoidance of cross media transfer of pollutants. This paper reviews the history and current status of biofiltration, outlines its underlying scientific and engineering principles, and discusses the applicability of biofilters for a wide range of specific emission sources.
677 citations
"Removal of Volatile Organic Compoun..." refers background in this paper
...Bio-filter success is dependent upon the degradability of the contaminants (Leson & Winer, 1991; Kiared et al., 1996)....
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...In practice, various types of packing material are used, e.g. compost, soil, peat, etc. (Leson & Winer, 1991; Jol & Dragt, 1995; Kiared, Bieau, Brzezinski, Viel & Heitz, 1996)....
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TL;DR: In order to eliminate organic pollutants in waste gases, a biological filter bed technique has been developed, with a high self‐regenerating capacity and a low pressure drop, which enables the prediction of the elimination capacity of the filter bed.
Abstract: In order to eliminate organic pollutants in waste gases, a biological filter bed technique has been developed, with a high self-regenerating capacity and a low pressure drop. The bed consists of an appropriate filling material (mainly peat compost), in order to let the microorganisms grow on the solid surface and to supply them with inorganic nutrients. Most organic compounds are oxidized to carbon dioxide and water. The compositions of the solid phase and the viable organisms present are such that aging is prevented, as a result of which a relatively high activity can be maintained during a long period of time (years). Experiments have been carried out in laboratory-scale columns with composite gas mixtures at varied concentrations and superficial gas velocities. The (macro) kinetics of the elimination processes have been studied, which enables the prediction of the elimination capacity of the filter bed.
413 citations
"Removal of Volatile Organic Compoun..." refers background or methods in this paper
...The bio-filtration process, which was originally developed for the odour abatement of waste gases, has proven recently to be an effective and inexpensive method for the removal of VOCs produced during various industrial activities (Ottenger & van den Oever, 1983)....
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...Once the contaminants are adsorbed, the micro organisms convert them to carbon dioxide, water, inorganic products and bio-mass (Ottenger & van den Oever, 1983; Liu et al., 1994)....
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TL;DR: In this paper, l'oxydation catalytique heterogene des composes volatils organiques: principes scientifiques fondamentaux de toutes les oxydations catalytiques et application aux composes VOLATILS organiques.
Abstract: Revue de la litterature sur l'oxydation catalytique heterogene des composes volatils organiques: principes scientifiques fondamentaux de toutes les oxydations catalytiques et application aux composes volatils organiques
364 citations