Different Ways to Apply a Measurement Instrument of E-Nose Type to Evaluate Ambient Air Quality with Respect to Odour Nuisance in a Vicinity of Municipal Processing Plants

Szulczyński, Bartosz; Wasilewski, T.; Wojnowski, W.; Majchrzak, Tomasz; Dymerski, Tomasz; Gębicki, Jacek

doi:10.3390/s17112671

Cited by 57 publications

(38 citation statements)

References 98 publications

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“…From both quantitative as well as qualitative viewpoints, gas chromatography is the most valuable method for this purpose. However, due to the low cost and short time of a single analysis, electronic noses have become an alternative to gas chromatography in many instances (Szulczyński et al 2017). The use of an electronic nose allows to monitor the process in an on-line mode and it has been successfully used in the assessment of the biofiltration process efficiency (Cabeza et al 2013;Guz 2015;Szulczyński et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of n-butanol presence, inlet loading, empty bed residence time and starvation periods on the performance of a biotrickling filter removing cyclohexane vapors from air

et al. 2019

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This paper presents the results of investigations on the removal of cyclohexane vapors from air using a peat-perlite packed biotrickling filter. Effects of basic process parameters i.e. inlet loading and empty bed residence time as well as introduction of n-butanol to the treated air stream and starvation periods on the process performance were evaluated. The results show that the introduction of hydrophilic n-butanol results in an enhanced removal of hydrophobic cyclohexane comparing to the experiments where only cyclohexane was treated. Additionally, the biotrickling filter performance after the starvation events is regained to more extent for mixed system than for the single cyclohexane. A novel and interesting element of the paper is the application of an electronic nose for the process monitoring. Obtained results are discussed in the perspective of an influence of the presence of a compound with different affinity to aqueous phase on the removal efficiency of the compound with opposite chemical properties. Keywords Biofiltration • Biotrickling filter • Cyclohexane • n-Butanol • Removal of VOCs • Electronic nose List of symbols a Coefficient of MLR model B Boiling point (°C) BF Biotrickling filter BTF Biotrickling filtration c Concentration of cyclohexane in the gas mixture (ppm v/v) C Concentration of cyclohexane in the gas mixture (mg m −3) d Internal diameter of BTF (m) EC Elimination capacity (g m −3 h −1) EBRT Empty bed residence time s GC Gas chromatography h Total height of a BTF packing (m) H Henry's constant (mol m −3 Pa −1)

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Section: Introductionmentioning

confidence: 99%

Effects of n-butanol presence, inlet loading, empty bed residence time and starvation periods on the performance of a biotrickling filter removing cyclohexane vapors from air

et al. 2019

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“…By using the ultraviolet light, via high energy photons, the molecules of the targeted gas start to ionize. As a result of this ionization, formed ions create an electric current which can be detected by PID sensors at different concentration levels (parts per million (ppm) or parts per billion (ppb)) [49] . Although it was clearly stated in [18] that "••• photo-ionization detector (PID) and quadrupole fingerprint mass spectrometers (QFMS) are not considered ENs in the strictest sense because they do not provide a collective data output from a sensor array and are designed to detect and identify individual components of a gas mixture.…”

Section: Photoionization Detector (Pid) Sensorsmentioning

confidence: 99%

Electronic Nose and Its Applications: A Survey

Karakaya

Ulucan

Türkan

2019

Int. J. Autom. Comput.

248

152

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In the last two decades, improvements in materials, sensors and machine learning technologies have led to a rapid extension of electronic nose (EN) related research topics with diverse applications. The food and beverage industry, agriculture and forestry, medicine and health-care, indoor and outdoor monitoring, military and civilian security systems are the leading fields which take great advantage from the rapidity, stability, portability and compactness of ENs. Although the EN technology provides numerous benefits, further enhancements in both hardware and software components are necessary for utilizing ENs in practice. This paper provides an extensive survey of the EN technology and its wide range of application fields, through a comprehensive analysis of algorithms proposed in the literature, while exploiting related domains with possible future suggestions for this research topic.

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“…It is commonly accepted that the assessment of odor emissions is performed according to the EU norm EN 13725:2003 on the determination of odor concentration by dynamic olfactometry. However, when the assessment of odorous quality of air is considered, other analytical methods may be employed including gas chromatography or electronic noses [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Removal of Hexane and Ethanol from Air in a Biotrickling Filter—Process Performance and Monitoring Using Electronic Nose

2020

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Biofiltration is a well-accepted method for the removal of malodorous compounds from air streams. Interestingly, the mechanisms underlying this process are not fully understood. The aim of this paper was to investigate the simultaneous removal of hydrophobic hexane with hydrophilic ethanol, resulting in the enhanced removal of hexane in the presence of ethanol. Investigations were performed in a peat-perlite packed biotrickling filter and the process performance was monitored using both gas chromatography and electronic nose techniques. The results indicate that the length as well as the efficiency of biofiltration during the start-up period depend on the feed composition, with higher efficiency obtained when hexane and ethanol were fed together from the process initiation. The experiments in the steady-state period present the biofilter performance when different ratios of hydrophilic to hydrophobic compounds were fed to the biofilter. The obtained results show the synergistic effects of the addition of a hydrophilic compound on the removal efficiency of hydrophobic hexane. The influence of the ratio of hydrophilic to hydrophobic compounds is discussed in terms of enhancing the mass transfer phenomena for hydrophobic volatile organic compounds.

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Different Ways to Apply a Measurement Instrument of E-Nose Type to Evaluate Ambient Air Quality with Respect to Odour Nuisance in a Vicinity of Municipal Processing Plants

Cited by 57 publications

References 98 publications

Effects of n-butanol presence, inlet loading, empty bed residence time and starvation periods on the performance of a biotrickling filter removing cyclohexane vapors from air

Effects of n-butanol presence, inlet loading, empty bed residence time and starvation periods on the performance of a biotrickling filter removing cyclohexane vapors from air

Electronic Nose and Its Applications: A Survey

Simultaneous Removal of Hexane and Ethanol from Air in a Biotrickling Filter—Process Performance and Monitoring Using Electronic Nose

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