Ability of bank filtration to remove cyanotoxins under different levels of nutrients

Luke Walkenhorst, Saptashati Biswas, Chittaranjan Ray, Matteo D’Alessio

Research output: Contribution to journalArticlepeer-review

Abstract

Harmful algal blooms represent a major environmental problem that is rapidly growing all over the world. In the present work, the effectiveness of simulated bank filtration (BF), as an economical water treatment option, to remove cyanotoxins under different levels of nutrients (nitrates and phosphates) was investigated. Vertical flow-through columns pre-acclimated with two levels of nutrients (e.g., nitrate and phosphate—10 vs. 50 mg/L) were exposed to two different levels of cyanotoxins (10 vs. 75 µg/L). Results from our study confirmed the ability of simulated BF to remove cyanotoxins. High cyanotoxins removals (>70%) were achieved regardless of the levels of nutrients and cyanotoxins. It can be recommended to guarantee enough travel time (>7 d) to enhance the removal of cyanotoxins. Among the removal mechanisms, biodegradation was the predominant removal mechanism.

Original languageEnglish (US)
Pages (from-to)971-974
Number of pages4
JournalWater and Environment Journal
Volume35
Issue number3
DOIs
StatePublished - Aug 2021
Externally publishedYes

Keywords

  • cyanotoxins
  • nutrients
  • riverbank filtration
  • water quality

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology
  • Pollution
  • Management, Monitoring, Policy and Law

Fingerprint

Dive into the research topics of 'Ability of bank filtration to remove cyanotoxins under different levels of nutrients'. Together they form a unique fingerprint.

Cite this