کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2423594 | 1552922 | 2010 | 7 صفحه PDF | دانلود رایگان |

In order to compare the efficacy of seaweeds and bacterial biofilm for removing nitrogenous wastes from recirculating marine aquaculture, Ulva lactuca L., Undaria pinnatifida Suringar, and a trickling biofilm filter were introduced to systems housing Haliotis iris Gmelin. Experiments were triplicated and run for 14 days. Although biofilm filtration maintained ammonium at low concentrations (around 0.10 mg l− 1), nitrate levels increased linearly over time, reaching 2.30 mg l− 1. Seaweeds maintained ammonium at concentrations that were consistently lower (around 0.03 mg l− 1) than those observed with biofilm filtration. Moreover, nitrates were undetectable and pH less variable, whilst valuable seaweed biomass, with increases up to 50%, was generated. Seaweed filtration thus has the potential to improve the efficiency and productivity of recirculating aquaculture, via enhanced culture conditions and the production of economically valuable biomass.
Journal: Aquaculture - Volume 306, Issues 1–4, 15 August 2010, Pages 153–159