{"id":{"repo_id":"missouri","oai_identifier":"oai:mospace.umsystem.edu:10355/44704"},"canonical_url":"https://search.dev.ndltd.org/etd/missouri/oai:mospace.umsystem.edu:10355/44704","repository":{"repo_id":"missouri","name":"University of Missouri","base_url":"https://mospace.umsystem.edu/oai/request"},"display":{"title":"Fabrication of TIO₂-embedded PVDF membranes and their application in algae membrane bioreactor systems","abstract":"Polyvinylidene difluoride (PVDF) membranes with and without TiO2 (5% by mass) were fabricated and applied for high-density algae cultivation in membrane algae bioreactors (MBR). Microalgae species Chlorella Vulgaris was cultivated in the MBR systems fed with artificial wastewater at a target solids retention time (SRT) of 25 days. Under steady-state conditions, the MBR systems had an average algae biomass concentration of 2350 mg/L (COD unit) with simultaneous removal of about 78% of phosphorus and 34% of nitrogen form wastewater. The anti-fouling characteristics of membranes were evaluated based on the measurement of intrinsic, reversible and irreversible resistances, and the scanning electron spectroscopy (SEM) study. Total resistance of TiO2-embedded membranes was 65% lower than the control (membranes without TiO2 impregnation) during 90 days of operation. This research demonstrated that embedding TiO2 into the PVDF membranes resulted in membranes with better antifouling properties for high-density algae cultivation.","abstract_html":"Polyvinylidene difluoride (PVDF) membranes with and without TiO2 (5% by mass) were fabricated and applied for high-density algae cultivation in membrane algae bioreactors (MBR). Microalgae species Chlorella Vulgaris was cultivated in the MBR systems fed with artificial wastewater at a target solids retention time (SRT) of 25 days. Under steady-state conditions, the MBR systems had an average algae biomass concentration of 2350 mg/L (COD unit) with simultaneous removal of about 78% of phosphorus and 34% of nitrogen form wastewater. The anti-fouling characteristics of membranes were evaluated based on the measurement of intrinsic, reversible and irreversible resistances, and the scanning electron spectroscopy (SEM) study. Total resistance of TiO2-embedded membranes was 65% lower than the control (membranes without TiO2 impregnation) during 90 days of operation. This research demonstrated that embedding TiO2 into the PVDF membranes resulted in membranes with better antifouling properties for high-density algae cultivation.","abstract_has_math":false,"creators":["Hu, Weiming"],"institution":"University of Missouri--Columbia","degree_name":"M.S.","degree_level":"Masters","degree_discipline":"Civil and environmental engineering (MU)","degree_department":null,"school":null,"contributors":[],"advisors":["Hu, Zhiqiang, 1966-","Deng, Baolin"],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013","date_published":"2013","updated_at":"2026-07-24T03:07:46Z","subjects":[],"languages":["eng","English"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["https://doi.org/10.32469/10355/44704"],"render_values":[{"text":"https://doi.org/10.32469/10355/44704","href":"https://doi.org/10.32469/10355/44704","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/10355/44704","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Hu, Zhiqiang, 1966-","Deng, Baolin"]},{"key":"dc:creator","label":"Author","values":["Hu, Weiming"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-12-30T19:52:07Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-12-30T19:52:07Z"]},{"key":"dc:date.issued","label":"Date","values":["2013"]},{"key":"dc:publisher","label":"Institution","values":["University of Missouri--Columbia"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil and environmental engineering (MU)"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Missouri--Columbia"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["https://doi.org/10.32469/10355/44704"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/10355/44704"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["\"December 2013.\"","\"A Thesis presented to the Faculty of the Graduate School at the University of Missouri--Columbia In Partial Fulfillment of the Requirements for the Degree Master of Science.\"","Thesis supervisors: Dr. Zhiqiang Hu and Dr. Baolin Deng."]},{"key":"dc:description.abstract","label":"Abstract","values":["Polyvinylidene difluoride (PVDF) membranes with and without TiO2 (5% by mass) were fabricated and applied for high-density algae cultivation in membrane algae bioreactors (MBR). Microalgae species Chlorella Vulgaris was cultivated in the MBR systems fed with artificial wastewater at a target solids retention time (SRT) of 25 days. Under steady-state conditions, the MBR systems had an average algae biomass concentration of 2350 mg/L (COD unit) with simultaneous removal of about 78% of phosphorus and 34% of nitrogen form wastewater. The anti-fouling characteristics of membranes were evaluated based on the measurement of intrinsic, reversible and irreversible resistances, and the scanning electron spectroscopy (SEM) study. Total resistance of TiO2-embedded membranes was 65% lower than the control (membranes without TiO2 impregnation) during 90 days of operation. This research demonstrated that embedding TiO2 into the PVDF membranes resulted in membranes with better antifouling properties for high-density algae cultivation."]},{"key":"dc:source","label":"Dc Source","values":["Submitted by the University of Missouri--Columbia Graduate School"]},{"key":"dc:title","label":"Title","values":["Fabrication of TIO₂-embedded PVDF membranes and their application in algae membrane bioreactor systems"]}]}],"canonical_facts":{"dc:contributor.advisor":["Hu, Zhiqiang, 1966-","Deng, Baolin"],"dc:creator":["Hu, Weiming"],"dc:date.accessioned":["2014-12-30T19:52:07Z"],"dc:date.available":["2014-12-30T19:52:07Z"],"dc:date.issued":["2013"],"dc:description":["\"December 2013.\"","\"A Thesis presented to the Faculty of the Graduate School at the University of Missouri--Columbia In Partial Fulfillment of the Requirements for the Degree Master of Science.\"","Thesis supervisors: Dr. Zhiqiang Hu and Dr. Baolin Deng."],"dc:description.abstract":["Polyvinylidene difluoride (PVDF) membranes with and without TiO2 (5% by mass) were fabricated and applied for high-density algae cultivation in membrane algae bioreactors (MBR). Microalgae species Chlorella Vulgaris was cultivated in the MBR systems fed with artificial wastewater at a target solids retention time (SRT) of 25 days. Under steady-state conditions, the MBR systems had an average algae biomass concentration of 2350 mg/L (COD unit) with simultaneous removal of about 78% of phosphorus and 34% of nitrogen form wastewater. The anti-fouling characteristics of membranes were evaluated based on the measurement of intrinsic, reversible and irreversible resistances, and the scanning electron spectroscopy (SEM) study. Total resistance of TiO2-embedded membranes was 65% lower than the control (membranes without TiO2 impregnation) during 90 days of operation. This research demonstrated that embedding TiO2 into the PVDF membranes resulted in membranes with better antifouling properties for high-density algae cultivation."],"dc:identifier.doi":["https://doi.org/10.32469/10355/44704"],"dc:identifier.uri":["https://hdl.handle.net/10355/44704"],"dc:language":["English"],"dc:language.iso":["eng"],"dc:publisher":["University of Missouri--Columbia"],"dc:source":["Submitted by the University of Missouri--Columbia Graduate School"],"dc:title":["Fabrication of TIO₂-embedded PVDF membranes and their application in algae membrane bioreactor systems"],"dc:type":["Thesis"],"thesis:degree_discipline":["Civil and environmental engineering (MU)"],"thesis:degree_level":["Masters"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Missouri--Columbia"]},"updated_at":"2026-07-24T03:07:46Z"}