Differences in nutrient uptake capacity of the benthic filamentous algae Cladophora sp., Klebsormidium sp. and Pseudanabaena sp. under varying N/P conditions

Bioresour Technol. 2015 Mar:179:234-242. doi: 10.1016/j.biortech.2014.12.028. Epub 2014 Dec 16.

Abstract

The N/P ratio of wastewater can vary greatly and directly affect algal growth and nutrient removal process. Three benthic filamentous algae species Cladophora sp., Klebsormidium sp. and Pseudanabaena sp. were isolated from a periphyton bioreactor and cultured under laboratory conditions on varying N/P ratios to determine their ability to remove nitrate and phosphorus. The N/P ratio significantly influenced the algal growth and phosphorus uptake process. Appropriate N/P ratios for nitrogen and phosphorus removal were 5-15, 7-10 and 7-20 for Cladophora sp., Klebsormidium sp. and Pseudanabaena sp., respectively. Within these respective ranges, Cladophora sp. had the highest biomass production, while Pseudanabaena sp. had the highest nitrogen and phosphorus contents. This study indicated that Cladophora sp. had a high capacity of removing phosphorus from wastewaters of low N/P ratio, and Pseudanabaena sp. was highly suitable for removing nitrogen from wastewaters with high N/P ratio.

Keywords: Cladophora; Klebsormidium; N/P ratio; Nutrient uptake; Pseudanabaena.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biomass
  • Ecosystem*
  • Eukaryota / drug effects
  • Eukaryota / growth & development
  • Eukaryota / metabolism*
  • Kinetics
  • Molecular Sequence Data
  • Nitrogen / isolation & purification
  • Nitrogen / metabolism*
  • Nitrogen / pharmacology
  • Phosphorus / isolation & purification
  • Phosphorus / metabolism*
  • Phosphorus / pharmacology
  • Time Factors

Substances

  • Phosphorus
  • Nitrogen

Associated data

  • GENBANK/KP165132