COSTECH Integrated Repository

A novel three-stage seaweed (Ulva lactuca) biofilter design for integrated mariculture

Show simple item record

dc.creator Neori, Amir
dc.creator Msuya, Flower E.
dc.creator Shauli, Lilach
dc.creator Schuenhoff, Andreas
dc.creator Kopel, Fidi
dc.creator Shpigel, Muki
dc.date 2016-02-18T16:39:04Z
dc.date 2016-02-18T16:39:04Z
dc.date 2003
dc.date.accessioned 2018-04-18T11:49:47Z
dc.date.available 2018-04-18T11:49:47Z
dc.identifier Neori A., Msuya F. E., Shauli L., Schuenhoff A., Fidi K. and Shpigel M. 2003. A novel three-stage seaweed (Ulva lactuca) biofilter design for integrated mariculture. Journal of Applied Phycology, 15: 543-553.
dc.identifier http://hdl.handle.net/123456789/444
dc.identifier.uri http://hdl.handle.net/123456789/10170
dc.description Seaweed biofilters have proven their usefulness in the treatment of fishpond effluents. However, their performance poses a dilemma: TAN (Total Ammonia N) uptake rate – and with it seaweed yield and protein content – is inversely proportional to TAN uptake efficiency. The ideal for a seaweed biofilter performance would be a high uptake rate together with high uptake efficiency. The novel three-stage seaweed biofilter design described here has solved this dilemma. The design used the finding that the performance of seaweed ponds depended on the flux of TAN through them, and that therefore effluents with reduced TAN concentration could provide the seaweed with a high TAN flux if the water flow increased proportionally. Effluents from a seabream fishpond were passed through a series of three successively smaller (25, 12.5 and 6.25 m2, respectively) air-agitated Ulva lactuca ponds. The diminished inflow TAN concentrations to the second and third ponds of the biofilter system were compensated for by the increased water exchange rates, inversely proportional to their sizes. The biofilter performance was evaluated under several TAN loads. TAN was efficiently removed (85–90%), at a high areal rate (up to 2.9 g N m−2 d−1) while producing high protein U. lactuca (up to 44% dw) in all three stages, although with mediocre yields (up to 189 g fresh m−2 d−1). Performance of each seaweed biofilter pond correlated not with TAN concentration, but with areal TAN loads. The novel three-stage design provides significant functional and economic improvements in seaweed biofiltration of intensive fishpond water.
dc.language en
dc.publisher Kluwer Academic Publishers
dc.subject seaweed
dc.subject mariculture
dc.subject seabream
dc.subject biofiltration
dc.subject nutrient uptake
dc.subject protein content
dc.subject Ulva lactuca
dc.subject aquacultural engineering
dc.title A novel three-stage seaweed (Ulva lactuca) biofilter design for integrated mariculture
dc.type Journal Article, Peer Reviewed


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search COSTECH


Advanced Search

Browse

My Account