Technologies for deodorization of malodorous gases

Wysocka, Izabela; Gębicki, Jacek; Namieśnik, Jacek

doi:10.1007/s11356-019-04195-1

Cited by 64 publications

(37 citation statements)

References 187 publications

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“…Research in the field of biotrickling filtration is devoted to e.g., small-scale applications for indoor air treatment [42], application of new strands of microbes [43] or process scaling-up [44]. Examples of current research on bioscrubbers are the emission control of NH 3 from agricultural applications [45] or treatment of air polluted with H2S and others [46][47][48].…”

Section: Air Deodorization By Biological Methodsmentioning

confidence: 99%

Comparative Evaluation of Selected Biological Methods for the Removal of Hydrophilic and Hydrophobic Odorous VOCs from Air

et al. 2019

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Due to increasingly stringent legal regulations as well as increasing social awareness, the removal of odorous volatile organic compounds (VOCs) from air is gaining importance. This paper presents the strategy to compare selected biological methods intended for the removal of different air pollutants, especially of odorous character. Biofiltration, biotrickling filtration and bioscrubbing technologies are evaluated in terms of their suitability for the effective removal of either hydrophilic or hydrophobic VOCs as well as typical inorganic odorous compounds. A pairwise comparison model was used to assess the performance of selected biological processes of air treatment. Process efficiency, economic, technical and environmental aspects of the treatment methods are taken into consideration. The results of the calculations reveal that biotrickling filtration is the most efficient method for the removal of hydrophilic VOCs while biofilters enable the most efficient removal of hydrophobic VOCs. Additionally, a simple approach for preliminary method selection based on a decision tree is proposed. The presented evaluation strategies may be especially helpful when considering the treatment strategy for air polluted with various types of odorous compounds.

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Section: Air Deodorization By Biological Methodsmentioning

confidence: 99%

Comparative Evaluation of Selected Biological Methods for the Removal of Hydrophilic and Hydrophobic Odorous VOCs from Air

et al. 2019

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“…When the adsorbent is used up, it can be replaced or regenerated. [Pinnasseau et al 2018, Wysocka et al 2019. The absorption method involves mass transfer between the polluted gas and the solvent (water, acid solution or alkaline solution -depending on the removed chemical compound types).…”

Section: Technological Solutions In Preventing Of Odour Emissions In mentioning

confidence: 99%

Prevention and Reduction of Odour Nuisance in Waste Management in the Context of the Current Legal and Technological Solutions

Pawnuk¹,

Grzelka²,

Miller³

et al. 2020

J. Ecol. Eng.

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Excessive odour emission, and thus the potential effect of unpleasant odours in the form of odour nuisance for residents, is a problem that affects many different waste management facilities. In order to prevent and reduce odour emissions, it is necessary to define specific clear and strict legal solutions and to use appropriate technologies. The Polish law indicates that waste management should not cause a nuisance. Despite this fact, legal solutions at the national level are not clear and precise. They are limited to only a few entries. At the European level, BREF Documents have been developed, which are a set of solutions that can be successfully used to counteract odour emissions. On their basis, BAT Conclusions were created, constituting a set of the best available techniques applicable, among others, to reduce the odour emissions from the waste management facilities. By way of implementation into Polish law, they constitute valid standards for prevention and control of odour emissions. The paper presents several solutions demonstrated in the above-mentioned documents aimed at preventing and reducing odour emissions. Various activities, not only those at the technological level but also related to management and planning, in combination with the best available technology allow for effective prevention and control of odour emissions, which could improve the state of environment around the waste management facilities and the quality of human life.

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“…Malodorous pollutants become odourless in this way, or at least come to be characterised by high(er) thresholds of olfactory perceptibility. The most frequently used methods of deodorisation are sorption, biological gas cleaning, thermal and catalytic combustion, and odour neutralisation [37]. However, gaseous compounds such as oxides of carbon and nitrogen, methane, ethene, ammonia, compounds of sulphur, etc., cannot be purified effectively by activated carbon alone [38].…”

Section: Possibilities Of Preventing Odour Annoyancementioning

confidence: 99%

Odours in Sewerage—A Description of Emissions and of Technical Abatement Measures

et al. 2019

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Malodorous compounds arise at practically every stage of wastewater management, starting from the sewer network, via the technological sewage-treatment system, through to the sludge-management stage. The formation of hydrogen sulphide is a significant problem even while sewage remains in sewers, as anaerobic conditions prevalent in the network are conducive to wastewater putrefaction, and therefore contribute to increased malodorous emissions. The development of such anaerobic conditions is favoured by the oversizing of conduits or designs that feature inadequate gradients, causing wastewater in the network to stagnate. Where emissions to the air from wastewater occur, they are found to constitute a complex mixture of perhaps even 1000 different substances, produced under varying process conditions. Among those present are compounds of sulphur and nitrogen, chlorinated compounds, and other organics. In Poland, the issue of odour annoyance has not yet been subject to standardisation in either legal or methodological terms. Indeed, as only 11 EU Member States have regulations in place regarding air-quality standards, it is likely that such a law will soon be developed to try and resolve problems with odour annoyance, including those originating in the systems dealing with wastewater. This denotes a need to develop methods of counteracting the formation of odours, and those of a chemical nature are regarded as among the most effective, hence their growing popularity. They also abide by green-technology principles. Against that background, this article seeks to consider the process by which malodorous substances arise in sewer and wastewater-treatment systems, as well as to discuss methods of odour abatement. The work also presents the current legal regulations of relevance to the issue.

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Technologies for deodorization of malodorous gases

Cited by 64 publications

References 187 publications

Comparative Evaluation of Selected Biological Methods for the Removal of Hydrophilic and Hydrophobic Odorous VOCs from Air

Comparative Evaluation of Selected Biological Methods for the Removal of Hydrophilic and Hydrophobic Odorous VOCs from Air

Prevention and Reduction of Odour Nuisance in Waste Management in the Context of the Current Legal and Technological Solutions

Odours in Sewerage—A Description of Emissions and of Technical Abatement Measures

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