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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Simultaneous removal of selenite and phenol from wastewater in an upflow fungal pellet bioreactor
Journal of Chemical Technology and Biotechnology, Volume 93, No. 4, Year 2018
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Description
BACKGROUND: The simultaneous treatment of wastewater containing selenite and phenol in batch and continuous systems, inoculated with pellets of Phanerochaete chrysosporium, was evaluated in this study. RESULTS: Synthetic oil refinery wastewater containing 15 mg L−1 selenite and 100–600 mg L−1 phenol was used in batch incubations for 5 days. Orange-red colored pellets developed during selenite incubations in the presence of up to 400 mg L−1 of phenol, which confirms the formation of elemental selenium with removal efficiencies ranging from 57–78.5% and 75–90.8% for, respectively, phenol and selenite. Continuous experiments in two upflow fungal pelleted bioreactors (30 °C, pH 4.5, hydraulic retention time of 16.7 h) fed the synthetic oil refinery wastewater containing phenol or phenol with selenite were performed for 38 days. The maximum removal efficiency of phenol in the fungal bioreactor was 100% (up to day 26). CONCLUSION: Selenite mass balance showed that the overall maximum removal efficiency of selenite in the presence of phenol was 67.3%. The critical phenol and selenite loading rates of the upflow bioreactors were ∼12 and 4.3 mg L−1 h−1, respectively. © 2017 Society of Chemical Industry.
Authors & Co-Authors
Werkneh, Adhena Ayaliew
Netherlands, Delft
Ihe Delft Institute for Water Education
Ethiopia, Adigrat
Adigrat University
Rene, Eldon Raj
Netherlands, Delft
Ihe Delft Institute for Water Education
Lens, Piet N.L.
Netherlands, Delft
Ihe Delft Institute for Water Education
Statistics
Citations: 18
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1002/jctb.5452
ISSN:
02682575