Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies
Thesis (PhD)--University of Pretoria, 2015.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2015
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613617929584640 |
|---|---|
| access_status_str | Open Access |
| author2 | Chirwa, Evans M.N. |
| author_browse | Chirwa, Evans M.N. |
| author_facet | Chirwa, Evans M.N. |
| collection | Thesis |
| dc_rights_str_mv | © 2015 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Thesis (PhD)--University of Pretoria, 2015. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/50720 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:00.149Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/50720 Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies Chirwa, Evans M.N. zedbirungi@gmail.com Birungi, Z.S. (Zainab) UCTD Phycoremediation Heavy metals Rare earth elements Green algae Eutrophic Freshwater bodies Engineering, built environment and information technology theses SDG-06 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Thesis (PhD)--University of Pretoria, 2015. Biosorption is an emerging and or complementary technology to the conventional treatment methods for industrial wastewater. Biosorption involves the use of dead biological material to sequester inorganics and or organic pollutants. Micro algae have a diversity of algal species found mostly in freshwater bodies of which only a few were investigated for their biosorption potential. This study focussed on the utilisation of green algal sorbents for the recovery of rare earth elements (REE) and removal of heavy metals. The algal samples were collected from Hartbeespoort dam in South Africa and isolated using streak plating method. The pure algal species were identified using molecular methods and found to have 95-98% identities to Chloroidium saccharophilum, Desmodesmus multivariabilis, Scenedesmus acuminutus and Stichococcus bacillaris. Chlorella vulgaris and Chlamydomonas reinhardtii were purchased for comparison purposes. The species were cultured in the laboratory under controlled conditions and dried to obtain dead algal cells for biosorption studies. Adsorption and desorption experiments were carried out to determine the sorption capacity and possible recovery in single metallic studies of lanthanum (La), thallium (Tl) and cadmium (Cd). Kinetic studies were also investigated to determine the potential rate controlling steps that are useful when designing a full scale biosorption process. Surface characterisation of algae was carried out to determine the possible mechanisms involved in biosorption processes. Multi-metallic studies were investigated to better understand the influence of competing ions in the actual environment. tm2015 Chemical Engineering PhD Unrestricted SDG-06: Clean water and sanitation SDG-09: Industry, innovation and infrastructure SDG-12: Responsible consumption and production 2015-11-25T09:47:26Z 2015-11-25T09:47:26Z 2015/09/01 2015 Thesis Birungi, Z 2015, Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies, PhD Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/50720> S2015 http://hdl.handle.net/2263/50720 en © 2015 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Phycoremediation Heavy metals Rare earth elements Green algae Eutrophic Freshwater bodies Engineering, built environment and information technology theses SDG-06 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies |
| title | Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies |
| title_full | Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies |
| title_fullStr | Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies |
| title_full_unstemmed | Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies |
| title_short | Phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies |
| title_sort | phycoremediation of heavy metals and resource recovery of rare earth elements using green algae from eutrophic freshwater bodies |
| topic | UCTD Phycoremediation Heavy metals Rare earth elements Green algae Eutrophic Freshwater bodies Engineering, built environment and information technology theses SDG-06 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 |
| url | http://hdl.handle.net/2263/50720 |