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Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa

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dc.contributor.author Steyn, Maronel
dc.contributor.author Oberholster, PJ
dc.contributor.editor De Jager, P
dc.date.accessioned 2022-05-13T10:35:11Z
dc.date.available 2022-05-13T10:35:11Z
dc.date.issued 2021-12
dc.identifier.citation Steyn, M. & Oberholster, P. 2021. Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa. In <i>The Sustainability Handbook: Volume 3</i>. P. De Jager, Ed. S.l.: Alive2Green. http://hdl.handle.net/10204/12415 . en_ZA
dc.identifier.isbn 978-0-620-45240
dc.identifier.uri http://hdl.handle.net/10204/12415
dc.description.abstract Sustainable development and the global move towards a more circular use of resources, where waste is reduced and resources are recycled, have caused a paradigm shift within the scientific community with regards to wastewater solutions. Nutrient recovery from organic waste streams is high on the development agenda and extends beyond direct economic benefits, to health and environmental benefits. Phycoremediation provides an alternative low-cost green solution to nutrient recovery from wastewater streams in developing countries. The current study utilizes a specific consortium of microalgal species (Chlorella vulgaris and Chlorella protothecoides) isolated and cultured specifically for their combined nutrient (total nitrogen and total phosphorous) removal efficiencies from domestic wastewater. The treatment was implemented at Brandwacht WWTW, a micro size waste stabilisation pond system managed by Mossel Bay local municipality in the Western Cape Province of South Africa. Total nitrogen removal efficacy after treatment was 73.1%, while total phosphorous removal was 50%. Even though the microbiological indicator, E. coli, were reduced by over 5 logs and the indicator numbers were far below that of the South African effluent discharge standards, the COD and other physicochemical parameters exceeded the discharge standards. The microalgae biomass was harvested by means of flocculation using Zetag 7557 from a small pilot scale plant, but very low concentrations were harvested. en_US
dc.format Fulltext en_US
dc.language.iso en en_US
dc.publisher Alive2Green en_US
dc.relation.uri http://sustainability-handbook.alive2green.co.za/current-issue/ en_US
dc.source The Sustainability Handbook: Volume 3 en_US
dc.subject Microalgae en_US
dc.subject Wastewater treatment en_US
dc.subject Low cost solution en_US
dc.subject Barriers en_US
dc.subject Circular economy en_US
dc.subject Nutrient recycling en_US
dc.title Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa en_US
dc.type Book Chapter en_US
dc.description.edition Volume 3 en_US
dc.description.pages 140 -153 en_US
dc.description.placeofpublication Cape Town en_US
dc.description.note Chapter published in The Sustainability Handbook: Volume 3 en_US
dc.description.cluster Smart Places en_US
dc.description.impactarea Intergrated Water Assessments en_US
dc.identifier.apacitation Steyn, M., & Oberholster, P. (2021). Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa. In P. De Jager. (Ed.), <i>The Sustainability Handbook: Volume 3</i> Alive2Green. http://hdl.handle.net/10204/12415 en_ZA
dc.identifier.chicagocitation Steyn, Maronel, and PJ Oberholster. "Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa" In <i>THE SUSTAINABILITY HANDBOOK: VOLUME 3</i>, edited by P De Jager. n.p.: Alive2Green. 2021. http://hdl.handle.net/10204/12415. en_ZA
dc.identifier.vancouvercitation Steyn M, Oberholster P. Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa. In De Jager P, editor.. The Sustainability Handbook: Volume 3. [place unknown]: Alive2Green; 2021. [cited yyyy month dd]. http://hdl.handle.net/10204/12415. en_ZA
dc.identifier.ris TY - Book Chapter AU - Steyn, Maronel AU - Oberholster, PJ AB - Sustainable development and the global move towards a more circular use of resources, where waste is reduced and resources are recycled, have caused a paradigm shift within the scientific community with regards to wastewater solutions. Nutrient recovery from organic waste streams is high on the development agenda and extends beyond direct economic benefits, to health and environmental benefits. Phycoremediation provides an alternative low-cost green solution to nutrient recovery from wastewater streams in developing countries. The current study utilizes a specific consortium of microalgal species (Chlorella vulgaris and Chlorella protothecoides) isolated and cultured specifically for their combined nutrient (total nitrogen and total phosphorous) removal efficiencies from domestic wastewater. The treatment was implemented at Brandwacht WWTW, a micro size waste stabilisation pond system managed by Mossel Bay local municipality in the Western Cape Province of South Africa. Total nitrogen removal efficacy after treatment was 73.1%, while total phosphorous removal was 50%. Even though the microbiological indicator, E. coli, were reduced by over 5 logs and the indicator numbers were far below that of the South African effluent discharge standards, the COD and other physicochemical parameters exceeded the discharge standards. The microalgae biomass was harvested by means of flocculation using Zetag 7557 from a small pilot scale plant, but very low concentrations were harvested. DA - 2021-12 DB - ResearchSpace DP - CSIR ED - De Jager, P J1 - The Sustainability Handbook: Volume 3 KW - Microalgae KW - Wastewater treatment KW - Low cost solution KW - Barriers KW - Circular economy KW - Nutrient recycling LK - https://researchspace.csir.co.za PY - 2021 SM - 978-0-620-45240 T1 - Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa TI - Barriers to closing the loop on nutrient recycling - a case study on phycoremediation of domestic wastewater in South Africa UR - http://hdl.handle.net/10204/12415 ER - en_ZA
dc.identifier.worklist 25607 en_US


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