Microcystins are present in water treatment plant residuals and are impacted by extraction and quantification methodology

Environmental Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: Sept. 26, 2024

Microcystins (MCs), a toxin produced by some species of the photosynthetic autotrophic cyanobacteria, are most studied and monitored cyanotoxin in water. Water treatment plant (WTP) residuals byproduct water consisting solids removed from WTP processes have been shown to contain cyanobacterial cells. However, presence MCs has not systematically demonstrated. Samples four different WTPs across United States were used quantify while assessing extraction quantification methods adapted samples for solid matrices. present 100% samples. MC-LA was prevalent variant these (70.05% quantified UPLC-PDA). Natural degradation observed storage lagoon also investigated determine impact physical, chemical, biological on MC concentrations high-biomass residuals. This study demonstrates that various characteristics MCs, no one method found maximize results consistently all Cyanotoxins accumulating growing concern. Implications this work can help regulations future studies potential reuse applications understanding ecological significance

Language: Английский

Fluorescence capturing behaviour of cyanobacterial resilience: Insights into UV‐exposed ecosystems and its environmental applications

Luminescence, Journal Year: 2024, Volume and Issue: 39(9)

Published: Sept. 1, 2024

Abstract Cyanobacteria are resilient microorganisms and thrive in environments exposed to UV radiation, ranging from ocean surfaces scorching hot springs dry expanses. ‘Cyanobacterial Resilience’ refers their ability withstand revealing intricate genomic secrets adaptive mechanisms ensuring survival. These include metabolic adaptations, robust DNA repair systems UV‐protective compounds such as Scytonemin Mycosporine, vital for shielding against radiation crucial pioneers UV‐exposed ecosystems, highlighting resilience adaptability. Some cyanobacteria exhibit luminescence, emitting blue‐green light due phycobiliproteins, while bioluminescence cyanobacteria, if it occurs, involves different rather than luciferins luciferase enzymes. This luminescence holds promise various biotechnological applications, biosensors, imaging probes carbon sequestration, participating photocatalytic processes water purification CO 2 conversion, contributes solar simulation studies advance photosynthesis renewable energy technologies. The versatile applications of these materials highlight ecological importance potential addressing global challenges. In conclusion, highlights the remarkable adaptation strategies environments. It emphasises role innovators biological technological domains, providing insights into enduring impact on ecosystems scientific advancement.

Language: Английский

Release of algal organic matter from cyanobacteria following application of USEPA-registered chemical algaecides

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 370, P. 122822 - 122822

Published: Oct. 15, 2024

Increased occurrence of harmful algal blooms significantly impedes uses freshwater resources, especially as potable water supply. Rapid mitigation using algaecides is common; however, the potential release organic matter (AOM) and cyanotoxins poses challenges due to difficulty removal with conventional treatment negative health impacts. This study evaluated four USEPA-registered for their efficacy against Microcystis aeruginosa growth AOM cyanotoxin release. Successful inhibition cell was achieved in both unialgal mixed culture samples at concentrations 0.2 mg Cu/L copper-based 6 H

Language: Английский