Loading content, please wait..
loading..
Logo
Version 3.15
or
Publication Type J
Authors Boxman, S. E., M. Nystrom, J. C. Capodice, S. J. Ergas, K. L. Main and M. A. Trotz
Title Effect of support medium, hydraulic loading rate and plant density on water quality and growth of halophytes in marine aquaponic systems
Source Aquaculture Research
Author Keywords aquaponics saline agriculture hydroponic integrated multi-trophic aquaculture RAS coconut fibre aquaculture waste-water constructed wetlands nutrient removal nitrogen uptake fresh-water denitrification efficiency seawater optimization cultivation
Abstract The development of marine intensive land-based aquaculture systems has been limited due to the absence of methods to manage saline wastewater. Aquaponic systems, although commonly applied to freshwater aquaculture, can potentially manage nutrient wastes while providing a secondary product. The aim of this study was to evaluate both the capacity for water treatment and the production requirements of two saltwater-tolerant plant species (Sesuvium portulacastrum and Batis maritima) when grown hydroponically in a marine aquaponic system. The presence of plants was found to significantly contribute to nitrate removal, such that mean nitrate concentrations were 10.1 +/- 5.4 and 12.1 +/- 6.1mg/L NO3--N in planted and unplanted treatments respectively. The use of coconut fibre as a planting medium also significantly contributed to nitrate removal, such that mean nitrate concentrations were 9.78 +/- 5.4 and 12.4 +/- 6.0mg/L NO3--N in coconut fibre and expanded clay treatments respectively. Daily nitrogen removal was greatest in the coconut fibre/plants treatment, ranging from -18% to 67%. Hydraulic loading rate, plant species and plant density did not significantly affect water quality or plant growth. The low flow/saltwort/low density treatment had the greatest mean daily nitrogen removal, ranging from 25% to 172%. The results indicate that the main nitrogen removal mechanisms were simultaneous nitrification-denitrification in the hydroponic plant beds and nitrogen removal through plant growth. This study demonstrates that marine aquaponics could be an effective way to manage nutrient removal in marine land-based aquaculture systems.
ISSN 1355-557X
ISBN 1355-557X
29-Character Source Abbreviation Aquac. Res.
Publication Date May
Year Published 2017
Volume 48
Issue 5
Beginning Page 2463-2477
Digital Object Identifier (DOI) 10.1111/are.13083
Unique Article Identifier WOS:000398859900044

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed