Show simple item record

dc.contributor.advisorHettiaratchi, Joseph Patrick
dc.contributor.authorGunasekera, Samadhi
dc.date2019-06-07
dc.date.accessioned2019-01-07T17:20:28Z
dc.date.available2019-01-07T17:20:28Z
dc.date.issued2019-01-03
dc.identifier.citationGunasekera, S.S. (2019). A Temperature-based Methane Oxidation Performance Model For Field High-rate Methane Biofilters (Unpublished doctoral thesis). University of Calgary, Calgary, ABen_US
dc.identifier.urihttp://hdl.handle.net/1880/109432
dc.description.abstractHigh rate methane biofiltration (HMBF) technology is a promising bioprocess to attenuate methane (CH4) rich waste gas from oil well and battery sites as an alternative to flaring and venting. Typically, the field performance of an HMBF is evaluated through its CH4 removal capacity, which is calculated by manually measuring the CH4 input and output. This approach is accurate for an instance of gas emissions. However, to determine HMBF performance over extended periods of time, continuous measurement techniques are required. This research uses temperature as a proxy to determine the CH4 oxidation in remote, field HMBFs. A physically based model was developed to back calculate CH4 oxidation rate based on the temperature change inside the filter bed. The model performance was calibrated and validated through actual data obtained from an actively aerated field HMBF, which was designed, constructed and operated for 420 days in an oil battery site in Hanna, AB. An empirical model was also developed using the data collected. The HMBF was highly successful in treating solution gas with a recorded maximum CH4 oxidation of 1657 g/m3.day. The temperature-based model showed high agreement with the actual results obtained from the HMBF yielding an R2 value of 0.77 and can be used to measure daily and cumulative GHG emission reductions achieved through an HMBF during any stage of operation. The empirical model developed also had a good fit with the temperature-based model and could be used to design and size future HMBFs and determine the best inlet flow conditions in which to operate an HMBF. The effect of inlet loading rate, air to CH4 ratio, temperature, moisture content and air-filled porosity on HMBF performance and the changes to filter bed conditions due to CH4 oxidation were studied. It was found that while inlet loading rate drives the CH4 oxidation rate, other parameters play an important role to sustain high CH4 oxidation over long periods of time.en_US
dc.language.isoenen_US
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectmethaneen_US
dc.subjectmethanotrophyen_US
dc.subjectmethane biofilteren_US
dc.subjecthigh rate methane biofilteren_US
dc.subject.classificationEngineeringen_US
dc.subject.classificationEngineering--Civilen_US
dc.subject.classificationEngineering--Environmentalen_US
dc.titleA Temperature-based Methane Oxidation Performance Model For Field High-rate Methane Biofiltersen_US
dc.typedoctoral thesisen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.institutionUniversity of Calgaryen
thesis.degree.nameDoctor of Philosophy (PhD)en_US
thesis.degree.disciplineEngineering – Civilen_US
thesis.degree.grantorUniversity of Calgaryen_US
dc.contributor.committeememberChu, Angus
dc.contributor.committeememberDu, Ke


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record