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Control of cyanobacterial growth with potassium; implications for bloom control in nuclear storage ponds

ABSTRACT: Microbial blooms have been reported in the First Generation Magnox Storage Pond at the Sellafield Nuclear Facility. The pond is kept alkaline with NaOH to minimise fuel rod corrosion, however alkali-tolerant microbial blooms dominated by the cyanobacterium Pseudanabaena catenata are able to thrive in this hostile environment.This study assessed the impact of alternative alkali-dosing regimens (KOH versus NaOH treatment) on biomass accumulation, using a P. catenata dominated mixed culture, which is representative of the pond environment. Optical density was reduced by 40-67% with KOH treatment over the 3-month chemostat experiment. Proteomics analysis were used to uncover the impact of KOH on P. catenata cells at protein expression level.

ORGANISM(S): Cyanobacteria

SUBMITTER: Jonathan R Lloyd

PROVIDER: PXD052268 | iProX | Wed May 15 00:00:00 BST 2024

REPOSITORIES: iProX

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Control of cyanobacterial growth with potassium; implications for bloom control in nuclear storage ponds.

Zhang Kejing K Foster Lynn L Boothman Christopher C Bassil Naji M NM Pittman Jon K JK Lloyd Jonathan R JR

Harmful algae 20240607

Microbial blooms have been reported in the First Generation Magnox Storage Pond at the Sellafield Nuclear Facility. The pond is kept alkaline with NaOH to minimise fuel rod corrosion, however alkali-tolerant microbial blooms dominated by the cyanobacterium Pseudanabaena catenata are able to thrive in this hostile environment. This study assessed the impact of alternative alkali-dosing regimens (KOH versus NaOH treatment) on biomass accumulation, using a P. catenata dominated mixed culture, which ...[more]

PMID: 39003020

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