Biologische Abluftreinigung von Druckereiablüften: Optimierung eines Biowäschers

Dobslaw, Daniel; Dobslaw, Christine; Futterer, Nadine; Engesser, Karl‐Heinrich

doi:10.1002/cite.200700069

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…A comprehensive compilation of test series for the simultaneous degradation of aromatics can be found in [85]. However, simultaneous biodegradation of VOCs belonging to different chemical groups is more difficult, i.e., treatment of 1,2-dichlorobenzene in mixture with toluene and o-xylene [85], alcohols and ethers [87], methoxypropyl acetate and xylene isomers [88], or tert-butanol and acetone [89], as shown by different studies of our research group. Moreover, this effect was even observed in case of closely related groups of substances, like benzene in mixture with toluene, styrene, and xylene isomers [86].…”

Section: Limitation In Degradation Of Voc Mixturesmentioning

confidence: 91%

Biological Waste Air and Waste Gas Treatment: Overview, Challenges, Operational Efficiency, and Current Trends

Dobslaw

Ortlinghaus²

2020

Sustainability

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International contracts to restrict emissions of climate-relevant gases, and thus global warming, also require a critical reconsideration of technologies for treating municipal, commercial, industrial, and agricultural waste gas emissions. A change from energy- and resource-intensive technologies, such as thermal post-combustion and adsorption, as well to low-emission technologies with high energy and resource efficiency, becomes mandatory. Biological processes already meet these requirements, but show restrictions in case of treatment of complex volatile organic compound (VOC) mixtures and space demand. Innovative approaches combining advanced oxidation and biofiltration processes seem to be a solution. In this review, biological processes, both as stand-alone technology and in combination with advanced oxidation processes, were critically evaluated in regard to technical, economical, and climate policy aspects, as well as present limitations and corresponding solutions to overcome these restrictions.

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Section: Limitation In Degradation Of Voc Mixturesmentioning

confidence: 91%

Biological Waste Air and Waste Gas Treatment: Overview, Challenges, Operational Efficiency, and Current Trends

Dobslaw

Ortlinghaus²

2020

Sustainability

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“…B. p-Xylol bei BTEX-Abbau, [8,9,19]) oder akkumulieren im Falle hoher Wasserlöslichkeit in der Wasserphase (z. B. Akkumulation von Ethoxyisopropanol bei Abbau von Ethanol, Butanol und Ethoxyisopropanol [11]).…”

Section: Problemstellungunclassified

Implementation of TA Luft 2002 in Existing Plants: A Bioscrubber for Combined Waste Air and Waste Water Treatment

Dobslaw

Woiski

Engesser

2010

Chemie Ingenieur Technik

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“…Even though degradation of single, aromatic VOCs is possible [21], this may not be so if other, more microbially accessible VOCs are present at the same time. When two alcohols and an ether are simultaneously present in the exhaust air, the ether (ethoxy-2-propanol) is much harder to degrade than the two alcohols due to catabolite repression [22]. Similarly, methyl ethyl ketone (MEK) and methyl iso-butyl ketone (MIBK) from the paint spray industry are well degradable when present alone.…”

Section: Introductionmentioning

confidence: 99%

Gas-to-aqueous Phase Transfer for Three Paint Solvents Injected into an Abiotic, Industrial Biotrickling Filter Measured with a Flame Ionization Detector

Gredmaier

Grüner-Lempart

Eckert

et al. 2021

Period. Polytech. Chem. Eng.

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This is a knowledge contribution to the unsatisfactory biodegradation problem, when biotrickling filters are purifying mixed paint solvents. A biotrickling filter manufacturer reported low biodegradation rates during the purification of a hydrocarbon pollutant mix from an industrial paint spraying floor. From a gas chromatograph/mass spectrometer analysis both hydrophilic and hydrophobic solvents were found in the polluted air. It is known that biodegradation is retarded, if the pollutant does not transfer from gas to liquid into the biofilm and it was therefore suspected that hydrophobic pollutants do not sufficiently migrate into the water/biofilm. To test this hypothesis, pure, rather than mixed pollutants, were injected into the abiotic biotrickling filter. When hydrophobic paint solvent (xylene) was sprayed into the biotrickling filter, the solvent load at the outlet of the filter was almost as high as at the inlet. But when pure, hydrophilic paint solvent (PGME) was sprayed into the abiotic biotrickling filter, the solvent load measured at the outlet of the filter was zero, indicating complete dissolution into the circulation water. Carbon/solvent loads at the filter outlet and inlet were measured with a portable flame ionization detector instrument. The experiment confirms that the hydrophobic solvent does not migrate into the liquid phase. This poor mass transfer of hydrophobic solvents is likely to be the reason for the low biodegradation rate. The result is highly relevant to the paint spraying industry and manufacturers of exhaust gas treatment equipment alike, who spend millions in non-sustainable incineration of exhaust gases.

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Biologische Abluftreinigung von Druckereiablüften: Optimierung eines Biowäschers

Cited by 4 publications

References 10 publications

Biological Waste Air and Waste Gas Treatment: Overview, Challenges, Operational Efficiency, and Current Trends

Biological Waste Air and Waste Gas Treatment: Overview, Challenges, Operational Efficiency, and Current Trends

Implementation of TA Luft 2002 in Existing Plants: A Bioscrubber for Combined Waste Air and Waste Water Treatment

Gas-to-aqueous Phase Transfer for Three Paint Solvents Injected into an Abiotic, Industrial Biotrickling Filter Measured with a Flame Ionization Detector

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