Trajectories towards clean technology: example of volatile organic compound emission reductions

Bélis-Bergouignan, Marie-Claude; Oltra, Vanessa; Jean, Maïder Saint

doi:10.1016/j.ecolecon.2003.09.010

Cited by 39 publications

(28 citation statements)

References 5 publications

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“…It is generally admitted that the aim of a chemical plant designer must be to reduce pollutant emissions, not by cleaning the effluents but by diminishing the production of the undesirable compounds, i.e., the clean technology approach. In general, pollution prevention can be achieved by three main types of clean technology [4], i.e., through ± process change, which involves the modification of the very nature of the production procedure, ± process modification, where, although the overall process principle remains essentially the same, some steps (e.g., additional equipment) are added, and ± existing process optimization, leading to an abatement in the emission of pollutants by studying changes in the process operating conditions. Obviously, the first option can be applied only to new plants, whereas the other two options can also be regarded as an appropriate way to reduce pollutant emissions from an existing plant.…”

Section: Introductionmentioning

confidence: 99%

Pollutant Emissions Management in an Existing Plant: The CHF3 Case

Pantzali

Mouza²,

Paras

2005

Chem. Eng. Technol.

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Changing production patterns towards waste reduction in a globalizing world can be considered a starting point towards sustainable development. The aim of the chemical plant designer is to reduce pollutant emissions, not by cleaning the effluents but by diminishing the production of the undesirable compounds. The case study examined is focused on reducing the CHF 3 emission of an existing difluorochloromethane (HCFC-22) plant by allocating the source of the problem and trying to decrease byproduct emissions by reducing their production. The effect of the operating conditions on the formation rate of both the product and the byproduct of the plant is studied and it is proved that the optimum result is accomplished simply by reducing the residence time in the fluorination reactor, that is, without the need for extra investment and/or energy consumption, a solution highly desirable from an economic point of view. The results of the study were applied to an existing plant leading to 50 % reduction of the CHF 3 emissions.

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Section: Introductionmentioning

confidence: 99%

Pollutant Emissions Management in an Existing Plant: The CHF3 Case

Pantzali

Mouza²,

Paras

2005

Chem. Eng. Technol.

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“…Adsorption by activated carbon is the most commonly used method for recovering VOC emissions since it is the most economic process for different kind of gas streams [7]. Activated carbons can be prepared from basically any carbon source, such as coconut, wood, peat, coal, tar, sawdust and cellulose residues [14].…”

Section: Recovery Of the Raw Emissionsmentioning

confidence: 99%

“…In this review, we will take into account also methane, while it is not strictly speaking a VOC compound, but it offers a good potential for utilization. Based on our surveys it seems that the utilization of VOCs as an energy source, either additional or in co-firing purposes [5][6][7][8][9][10] is the most currently used solution. However, we exclude this alternative from this review and we concentrate on either the direct use, synthesis gas production or hydrogen production from VOC emissions.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

et al. 2015

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Abstract:The treatment of volatile organic compounds (VOC) emissions is a necessity of today. The catalytic treatment has already proven to be environmentally and economically sound technology for the total oxidation of the VOCs. However, in certain cases, it may also become economical to utilize these emissions in some profitable way. Currently, the most common way to utilize the VOC emissions is their use in energy production. However, interesting possibilities are arising from the usage of VOCs in hydrogen and syngas production. Production of chemicals from VOC emissions is still mainly at the research stage. However, few commercial examples exist. This review will summarize the commercially existing VOC utilization possibilities, present the utilization applications that are in the research stage and introduce some novel ideas related to the catalytic utilization possibilities of the VOC emissions. In general, there exist a vast number of possibilities for VOC OPEN ACCESSCatalysts 2015, 5 1093 utilization via different catalytic processes, which creates also a good research potential for the future.

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“…Generally, in many cases, the pervaporation alone can not supply products suitable for further processing or waste disposal [11]. That is why pervaporation is usually combined with other separation processes such as distillation, liquid-liquid extraction, adsorption, and stripping.…”

Section: Introductionmentioning

confidence: 99%

“…GFT, now owned by Sulzer, the leader in this field, installed the first pilot plant in 1982. The second commercial application of pervaporation is the removal of small amounts of volatile organic compounds (VOCs) from contaminated water [10,11]. This technology was developed by Membrane Technology and Research [12][13][14]; the first commercial plant was sold in 1996.…”

Section: Introductionmentioning

confidence: 99%

Rigorous modelling and optimization of hybrid separation processes based on pervaporation

2007

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Hybrid separation processes are becoming more and more important in the practice if membrane technologies are also involved. In this work, a systematic investigation is completed for three sequence alternatives of distillation and pervaporation. These are the following: pervaporation followed with distillation (PV+D), distillation followed with pervaporation (D+PV), two distillation columns and a pervaporation unit between them (D+PV+D). The hybrid separation process alternatives are evaluated with rigorous modelling tools, but first, a rigorous simulation algorithm is determined for the pervaporation. The three hybrid separation processes are rigorously modelled with CHEMCAD, and optimized with the dynamic programming optimization method for the case of the separation of ethanol-water mixture. The objective function is the total annual cost (TAC).The energy consumption is also investigated. The selection of the ethanol-water mixture has two motivations: (i) it is quite often studied and well known, and (ii) to make biofuel (ethanol) production more economical, membrane technologies might also be applied. The results are compared with each other and with the classical separation completed with heteroazeotropic distillation. The optimized TAC shows that the distillation column followed with pervaporation is the most economical hybrid separation process alternative. Its TAC is about 66% of that of the classical separation.

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Trajectories towards clean technology: example of volatile organic compound emission reductions

Cited by 39 publications

References 5 publications

Pollutant Emissions Management in an Existing Plant: The CHF3 Case

Pollutant Emissions Management in an Existing Plant: The CHF3 Case

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

Rigorous modelling and optimization of hybrid separation processes based on pervaporation

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