Treatment of drainage solution from hydroponic greenhouse production with microalgae

Abstract

This study investigated treatment of the drainage solution from greenhouse production with microalgae, through inoculation with Chlorella vulgaris or through growth of the indigenous microalgal community. A significant reduction in nitrogen, between 34.7 and 73.7 mg L-1, and particularly in phosphorus concentration, between 15.4 and 15.9 mg L-1, was observed in drainage solution collected from commercial greenhouse production. The large reduction in nutrients was achieved through growth of the indigenous microalgal community i.e., without pre-treatment of the drainage solution or inoculation with the fast growing green microalgae C vulgaris. Analysis of the fatty acid composition of the algal biomass revealed that compared with a standard growth medium for green algae, the drainage solution was inferior for lipid production. Despite the biorefinery concept being less promising, microalgae-based treatment of drainage solution from greenhouse production is still of interest considering the urgent need for phosphorus recycling. (C) 2013 Elsevier Ltd. All rights reserved.

Keywords

Chlorella vulgaris; Fatty acids; Hydroponics; Microalgae: nutrient removal; Scenedesmus spp.

Published in

Bioresource Technology
2013, Volume: 136, pages: 401-406 Publisher: ELSEVIER SCI LTD

SLU Authors

• Hultberg, Malin

  • Horticulture, Swedish University of Agricultural Sciences
    

• Carlsson, Anders

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

Sustainable Development Goals

SDG6 Clean water and sanitation


UKÄ Subject classification

Microbiology
Horticulture


Publication identifier

DOI: https://doi.org/10.1016/j.biortech.2013.03.019

Permanent link to this page (URI)

https://res.slu.se/id/publ/56041