{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/105939"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/105939","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Separation of phosphorus uptake and carbohydrate storage for intensive algal treatment processes","abstract":"The student, Courtney Ackerman, accepted the attached license on 2019-07-11 at 13:59.","abstract_html":"The student, Courtney Ackerman, accepted the attached license on 2019-07-11 at 13:59.","abstract_has_math":false,"creators":["Ackerman, Courtney Anne"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Environ Engr in Civil Engr","degree_department":null,"school":null,"contributors":["Guest, Jeremy S"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-11-26T20:59:46Z","date_published":"2019-11-26T20:59:46Z","updated_at":"2026-07-22T22:24:45Z","subjects":["Wastewater treatment","algae","phosphorus","light","photobioreactor"],"languages":["en"],"rights":["© 2019 Courtney Anne Ackerman"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/105939","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Guest, Jeremy S"]},{"key":"dc:creator","label":"Author","values":["Ackerman, Courtney Anne"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-11-26T20:59:46Z","2021-11-27T10:15:34Z","2019-07-15","2019-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Environ Engr in Civil Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Wastewater treatment","algae","phosphorus","light","photobioreactor"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["© 2019 Courtney Anne Ackerman"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/105939"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The student, Courtney Ackerman, accepted the attached license on 2019-07-11 at 13:59.","The student, Courtney Ackerman, submitted this Thesis for approval on 2019-07-11 at 14:02.","Microalgal systems have the potential to be an effective tertiary treatment step to lower effluent nitrogen and phosphorus levels discharged from secondary clarifiers at water resource recovery facilities. This work leveraged a tubular photobioreactor (PBR) system to evaluate the effect of a natural microalgal consortium on amended secondary clarifier effluent from the Urbana, IL water resource recovery facility. The photobioreactor is critical to ensure algae dominance over heterotrophic bacteria, but phosphorus uptake has been shown to be achieved in a dark mix tank. The objective of the work was to determine whether the system could use light time in the photobioreactor for carbohydrate storage and still achieve the adequate nutrient removal in the dark. The system was cycled between light and dark conditions, on the timescale of hours, with the goal of creating phosphorus-deplete conditions in the light, to see if phosphorus removal occurred when fresh influent was added in the dark. Different experimental conditions were evaluated with the goal to achieve complete phosphorus removal, but ultimately, the system was unable to achieve the level of removal necessary for full-scale implementation under these conditions. Since complete phosphorus removal was not achieved, carbohydrates were not stored in the light and no phosphorus removal occurred in the dark. Many different troubleshooting steps were attempted (e.g., increased solids and liquids residence times, cycle time, light exposure, aeration and pH control) but even under the less conservative conditions, the removal was not achieved, presumably because the limiting factor was not identified. The results of this study will still be able to help inform full-scale design and operation of algal treatment processes, as insight was gained into the laboratory reactor setup.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2021-08-01","This Thesis was approved for publication on 2019-07-15 at 13:25.","DSpace SAF Submission Ingestion Package generated from Vireo submission #14270 on 2019-11-26 at 14:03:58","Made available in DSpace on 2019-11-26T20:59:46Z (GMT). No. of bitstreams: 2 ACKERMAN-THESIS-2019.pdf: 4449685 bytes, checksum: 073d6a33143271875b0bac0442fad8a9 (MD5) LICENSE.txt: 4214 bytes, checksum: 9dcfe36a90e1305c17199266acf648dc (MD5) Previous issue date: 2019-07-15","Embargo set by: Seth Robbins for item 113086 Lift date: 2021-11-26T20:59:54Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 113086 on 2021-11-27T10:15:34Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Separation of phosphorus uptake and carbohydrate storage for intensive algal treatment processes"]}]}],"canonical_facts":{"dc:contributor":["Guest, Jeremy S"],"dc:creator":["Ackerman, Courtney Anne"],"dc:date":["2019-11-26T20:59:46Z","2021-11-27T10:15:34Z","2019-07-15","2019-08"],"dc:description":["The student, Courtney Ackerman, accepted the attached license on 2019-07-11 at 13:59.","The student, Courtney Ackerman, submitted this Thesis for approval on 2019-07-11 at 14:02.","Microalgal systems have the potential to be an effective tertiary treatment step to lower effluent nitrogen and phosphorus levels discharged from secondary clarifiers at water resource recovery facilities. This work leveraged a tubular photobioreactor (PBR) system to evaluate the effect of a natural microalgal consortium on amended secondary clarifier effluent from the Urbana, IL water resource recovery facility. The photobioreactor is critical to ensure algae dominance over heterotrophic bacteria, but phosphorus uptake has been shown to be achieved in a dark mix tank. The objective of the work was to determine whether the system could use light time in the photobioreactor for carbohydrate storage and still achieve the adequate nutrient removal in the dark. The system was cycled between light and dark conditions, on the timescale of hours, with the goal of creating phosphorus-deplete conditions in the light, to see if phosphorus removal occurred when fresh influent was added in the dark. Different experimental conditions were evaluated with the goal to achieve complete phosphorus removal, but ultimately, the system was unable to achieve the level of removal necessary for full-scale implementation under these conditions. Since complete phosphorus removal was not achieved, carbohydrates were not stored in the light and no phosphorus removal occurred in the dark. Many different troubleshooting steps were attempted (e.g., increased solids and liquids residence times, cycle time, light exposure, aeration and pH control) but even under the less conservative conditions, the removal was not achieved, presumably because the limiting factor was not identified. The results of this study will still be able to help inform full-scale design and operation of algal treatment processes, as insight was gained into the laboratory reactor setup.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2021-08-01","This Thesis was approved for publication on 2019-07-15 at 13:25.","DSpace SAF Submission Ingestion Package generated from Vireo submission #14270 on 2019-11-26 at 14:03:58","Made available in DSpace on 2019-11-26T20:59:46Z (GMT). No. of bitstreams: 2 ACKERMAN-THESIS-2019.pdf: 4449685 bytes, checksum: 073d6a33143271875b0bac0442fad8a9 (MD5) LICENSE.txt: 4214 bytes, checksum: 9dcfe36a90e1305c17199266acf648dc (MD5) Previous issue date: 2019-07-15","Embargo set by: Seth Robbins for item 113086 Lift date: 2021-11-26T20:59:54Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 113086 on 2021-11-27T10:15:34Z."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/105939"],"dc:language":["en"],"dc:rights":["© 2019 Courtney Anne Ackerman"],"dc:subject":["Wastewater treatment","algae","phosphorus","light","photobioreactor"],"dc:title":["Separation of phosphorus uptake and carbohydrate storage for intensive algal treatment processes"],"dc:type":["text"],"thesis:degree_discipline":["Environ Engr in Civil Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:45Z"}