Integrated modelling of two xenobiotic organic compounds

2006 ◽  
Vol 54 (6-7) ◽  
pp. 213-221 ◽  
Author(s):  
E. Lindblom ◽  
K.V. Gernaey ◽  
M. Henze ◽  
P.S. Mikkelsen
Keyword(s):  
Organic Compounds ◽  
Fate And Transport ◽  
Process Models ◽  
Integrated Modelling ◽  
Biological Degradation ◽  
Urban Wastewater ◽  
Model Compounds ◽  
System A ◽  
Mass Flows ◽  
Wet Weather

This paper presents a dynamic mathematical model that describes the fate and transport of two selected xenobiotic organic compounds (XOCs) in a simplified representation of an integrated urban wastewater system. A simulation study, where the xenobiotics bisphenol A and pyrene are used as reference compounds, is carried out. Sorption and specific biological degradation processes are integrated with standardised water process models to model the fate of both compounds. Simulated mass flows of the two compounds during one dry weather day and one wet weather day are compared for realistic influent flow rate and concentration profiles. The wet weather day induces resuspension of stored sediments, which increases the pollutant load on the downstream system. The potential of the model to elucidate important phenomena related to origin and fate of the model compounds is demonstrated.

Biocides in urban wastewater treatment plant influent at dry and wet weather: Concentrations, mass flows and possible sources

2014 ◽  
Vol 60 ◽  
pp. 64-74 ◽  
Author(s):  
Ulla E. Bollmann ◽  
Camilla Tang ◽  
Eva Eriksson ◽  
Karin Jönsson ◽  
Jes Vollertsen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Urban Wastewater ◽  
Mass Flows ◽  
Wet Weather ◽  
Urban Wastewater Treatment

Application of biological activated carbon anaerobic reactor for treatment of hazardous chemicals

2006 ◽  
Vol 53 (11) ◽  
pp. 251-260 ◽  
Author(s):  
H. Tsuno ◽  
M. Kawamura ◽  
T. Oya
Keyword(s):  
Experimental Data ◽  
Activated Carbon ◽  
Organic Compounds ◽  
Adsorptive Capacity ◽  
Biological Degradation ◽  
Hazardous Chemicals ◽  
High Concentration ◽  
Expanded Bed ◽  
Biological Activated Carbon ◽  
Anaerobic Reactor

An expanded-bed anaerobic reactor with granular activated carbon (GAC) medium has been developed to treat wastewaters that contain a high concentration of inhibitory and/or refractory organic compounds as well as readily degradable organic compounds. The process is characterised by a combination of two removal mechanisms; adsorption on GAC and biological degradation by microorganisms grown on GAC. Applicability of the reactor to treatment of phenol, chloroacetaldehyde (CAA), pentachlorophenol (PCP) and tetrachloroethylene (PCE) was discussed based on experimental data. All chemicals focused on here were removed well and stably at a removal efficiency of more than 98% even during starting operation and shock load operation. Chemicals in influent that exceeded biological degradation capacity was initially adsorbed on GAC and then gradually degraded, and hence the adsorptive capacity of GAC was regenerated biologically. These results proved that a biological activated carbon anaerobic reactor was effective for treatment of wastewater containing hazardous chemicals, especially for strongly absorbable chemicals, as well as readily degradable organic compounds at high concentration.

Decomposition of selected chlorinated volatile organic compounds by ceria (CeO2)

2017 ◽  
Vol 7 (17) ◽  
pp. 3902-3919 ◽  
Author(s):  
Hussein A. Miran ◽  
Mohammednoor Altarawneh ◽  
Zhong-Tao Jiang ◽  
Hans Oskierski ◽  
Mansour Almatarneh ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Experimental Measurements ◽  
Model Compounds ◽  
Chlorinated Volatile Organic Compounds ◽  
Volatile Organic

Guided by recent experimental measurements, this study theoretically investigates the initial steps operating in the interactions of ceria surface CeO2(111) with three CVOC model compounds, namely chloroethene (CE), chloroethane (CA) and chlorobenzene (CB).

scholarly journals Removal of volatile organic compounds using amphiphilic cyclodextrin-coated polypropylene

2014 ◽  
Vol 10 ◽  
pp. 2743-2750 ◽  
Author(s):  
Ludmilla Lumholdt ◽  
Sophie Fourmentin ◽  
Thorbjørn T Nielsen ◽  
Kim L Larsen
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Complex Mixture ◽  
Headspace Gas Chromatography ◽  
Cyclodextrin Derivatives ◽  
Model Compounds ◽  
Realistic Situation ◽  
Volatile Organic ◽  
Headspace Gas ◽  
Amphiphilic Cyclodextrin

Polypropylene nonwovens were functionalised using a self-assembled, amphiphilic cyclodextrin coating and the potential for water purification by removal of pollutants was studied. As benzene is one of the problematic compounds in the Water Framework Directive, six volatile organic compounds (benzene and five benzene-based substances) were chosen as model compounds. The compounds were tested as a mixture in order to provide a more realistic situation since the wastewater will be a complex mixture containing multiple pollutants. The volatile organic compounds are known to form stable inclusion complexes with cyclodextrins. Six different amphiphilic cyclodextrin derivatives were synthesised in order to elucidate whether or not the uptake abilities of the coating depend on the structure of the derivative. Headspace gas chromatography was used for quantification of the uptake exploiting the volatile nature of benzene and its derivatives. The capacity was shown to increase beyond the expected stoichiometries of guest–host complexes with ratios of up to 16:1.

Non-targeted analyses of organic compounds in urban wastewater

2014 ◽  
Vol 53 (9) ◽  
pp. 704-710 ◽  
Author(s):  
Elenilson G. Alves Filho ◽  
Luci Sartori ◽  
Lorena M. A. Silva ◽  
Bianca F. Silva ◽  
Pedro S. Fadini ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Urban Wastewater
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