Long term performance of biotrickling filters removing a mixture of volatile organic compounds from an artificial waste gas: dichloromethane and methylmethacrylate

1999 ◽  
Vol 20 (1) ◽  
pp. 49 ◽  
Author(s):  
W. J. H. Okkerse ◽  
S. P. P. Ottengraf ◽  
R. M. M. Diks ◽  
B. Osinga-Kuipers ◽  
P. Jacobs
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Waste Gas ◽  
Biotrickling Filters ◽  
Volatile Organic ◽  
Long Term Performance ◽  
Term Performance

scholarly journals Generation of Volatile Organic Compounds by Alpha Particle Degradation of Wipp Plastic and Rubber Material

1993 ◽  
Vol 333 ◽  
Author(s):  
Donald T. Reed ◽  
Martin A. Molecke
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Alpha Particle ◽  
Absorbed Dose ◽  
Regulatory Compliance ◽  
Particle Irradiation ◽  
Volatile Organic ◽  
Long Term Performance ◽  
Term Performance

ABSTRACTThe generation of volatile organic compounds (VOCs), hydrogen, and carbon oxides due to alpha particle irradiation of polyethylene, polyvinylchloride, hypalon, and neoprene, is being investigated. A wide diversity of VOCs was found including alkenes, alkanes, alcohols, ketones, benzene derivatives, and nitro compounds. Their yields however, were quite low. The relative amounts of these compounds depended on the material, atmosphere present, and the absorbed dose. This investigation will help evaluate the effect of ionizing radiation on the long-term performance assessment and regulatory compliance issues related to the Waste Isolation Pilot Plant (WIPP).

scholarly journals Development of a Water Matrix Certified Reference Material for Volatile Organic Compounds Analysis in Water

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4370
Author(s):  
Liping Fang ◽  
Linyan Huang ◽  
Gang Yang ◽  
Yang Jiang ◽  
Haiping Liu ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Reference Material ◽  
Organic Compounds ◽  
Certified Reference Material ◽  
Pure Water ◽  
Term Stability ◽  
Long Term Stability ◽  
Water Matrix ◽  
Volatile Organic

Water matrix certified reference material (MCRM) of volatile organic compounds (VOCs) is used to provide quality assurance and quality control (QA/QC) during the analysis of VOCs in water. In this research, a water MCRM of 28 VOCs was developed using a “reconstitution” approach by adding VOCs spiking, methanol solution into pure water immediately prior to analysis. The VOCs spiking solution was prepared gravimetrically by dividing 28 VOCs into seven groups, then based on ISO Guide 35, using gas chromatography-mass spectrometry (GC-MS) to investigate the homogeneity and long-term stability. The studies of homogeneity and long-term stability indicated that the batch of VOCs spiking solution was homogeneous and stable at room temperature for at least 15 months. Moreover, the water MCRM of 28 VOCs was certified by a network of nine competent laboratories, and the certified values and expanded uncertainties of 28 VOCs ranged from 6.2 to 17 μg/L and 0.5 to 5.3 μg/L, respectively.

scholarly journals Root anoxia effects on physiology and emissions of volatile organic compounds (VOC) under short- and long-term inundation of trees from Amazonian floodplains

SpringerPlus ◽  
2012 ◽  
Vol 1 (1) ◽  
pp. 9 ◽  
Author(s):  
Araceli Bracho-Nunez ◽  
Nina Knothe ◽  
Wallace R Costa ◽  
Liberato R Maria Astrid ◽  
Betina Kleiss ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Volatile Organic ◽  
Short And Long Term

Experimental Study of Droplet Biofilter Packed with Green Sphagnum

2017 ◽  
Author(s):  
Erika Petrauskaitė ◽  
Rasa Vaiškūnaitė
Keyword(s):  
Experimental Study ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Lower Layer ◽  
High Flow ◽  
Plant Structure ◽  
Waste Gas ◽  
Air Cleaning ◽  
Volatile Organic ◽  
Different Types

Air cleaning from VOC (volatile organic compunds) group of contaminants could be done by using different types of methods: adsoption, absorption, chemical or thermal oxidation. However, the most promising method is biological air cleaning. Biofilters have found most of their success in the treatment of dilute high-flow waste gas sreams containing odors or volatile organic compounds. To evaluate the meaning of the applicability of green sphagnum use in the droplet biofilter we will make the research. Sphagnum as a plant has big capabilities to absorb water and hold it in the porous parts plant structure. This characteristic of the plant could affect the water flow in the lower layer of the biolfiltrer and in this case will change the possibility to microorganisms to create right envinment to absorb and degrade the polluted air. The main aim of this research is the experimental study of droplet biofilter packed with green sphagnum.

Long-term soil biological fertility, volatile organic compounds and chemical properties in a vineyard soil after biochar amendment

Geoderma ◽  
2019 ◽  
Vol 344 ◽  
pp. 127-136 ◽  
Author(s):  
Laura Giagnoni ◽  
Anita Maienza ◽  
Silvia Baronti ◽  
Francesco Primo Vaccari ◽  
Lorenzo Genesio ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Chemical Properties ◽  
Volatile Organic ◽  
Vineyard Soil ◽  
Biochar Amendment ◽  
And Chemical Properties

Long-term Emission of Volatile Organic Compounds from Waterborne Paints - Methods of Comparison

Indoor Air ◽  
1991 ◽  
Vol 1 (4) ◽  
pp. 562-576 ◽  
Author(s):  
Per A. Clausen ◽  
Peder Wolkoff ◽  
Erik Hoist ◽  
Peter A. Nielsen
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Volatile Organic

scholarly journals Physicochemical uptake and release of volatile organic compounds by soil in coated-wall flow tube experiments with ambient air

2019 ◽  
Vol 19 (4) ◽  
pp. 2209-2232 ◽  
Author(s):  
Guo Li ◽  
Yafang Cheng ◽  
Uwe Kuhn ◽  
Rongjuan Xu ◽  
Yudong Yang ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Atmospheric Chemistry ◽  
Soil Surface ◽  
Ambient Air ◽  
Flow Tube ◽  
Heterogeneous Oxidation ◽  
Volatile Organic ◽  
Wall Flow

Abstract. Volatile organic compounds (VOCs) play a key role in atmospheric chemistry. Emission and deposition on soil have been suggested as important sources and sinks of atmospheric trace gases. The exchange characteristics and heterogeneous chemistry of VOCs on soil, however, are not well understood. We used a newly designed differential coated-wall flow tube system to investigate the long-term variability of bidirectional air–soil exchange of 13 VOCs under ambient air conditions of an urban background site in Beijing. Sterilized soil was investigated to address physicochemical processes and heterogeneous/multiphase reactions independently from biological activity. Most VOCs revealed net deposition with average uptake coefficients (γ) in the range of 10−7–10−6 (referring to the geometric soil surface area), corresponding to deposition velocities (Vd) of 0.0013–0.01 cm s−1 and soil surface resistances (Rc) of 98–745 s cm−1, respectively. Formic acid, however, was emitted at a long-term average rate of ∼6×10-3 nmol m−2 s−1, suggesting that it was formed and released upon heterogeneous oxidation of other VOCs. The soil–atmosphere exchange of one individual VOC species can be affected by both its surface degradation/depletion caused by surface reactions and by competitive uptake or heterogeneous formation/accommodation of other VOC species. Overall, the results show that physicochemical processing and heterogeneous oxidation on soil and soil-derived dust can act as a sink or as a source of atmospheric VOCs, depending on molecular properties and environmental conditions.

scholarly journals A comparison of removal performance of volatile organic and sulfurous compounds between odour abatement systems

2018 ◽  
Vol 77 (11) ◽  
pp. 2657-2667 ◽  
Author(s):  
A. Shammay ◽  
I. Evanson ◽  
R. M. Stuetz
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Voc Removal ◽  
Biotrickling Filters ◽  
Volatile Organic ◽  
Sulfurous Compounds ◽  
Sulfide Species ◽  
Sewer Networks

Abstract Three types of odour abatement systems in sewer networks in Australia were studied for 18 months to determine the removals of different compounds. Six volatile sulfurous compounds and seven volatile organic compounds (VOCs) were further investigated. All types of odour abatement systems exhibited good removal of hydrogen sulfide with the biotrickling filters (BTFs) showing the highest consistent removal. Biofilters outperformed BTFs and activated carbon (AC) filters in the removal of dimethyl mono-, di- and tri-sulfide species at the low inlet concentrations typically found. AC filters exhibited little VOC removal with no compound consistently identified as having a removal greater than 0%. Biofilters outperformed BTFs in VOC removal, yet both had high removal variability.

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