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Titolo:
Design and function of a closed, recirculating seawater system with denitrification for the culture of black tiger shrimp broodstock
Autore:
Menasveta, P; Panritdam, T; Sihanonth, P; Powtongsook, S; Chuntapa, B; Lee, P;
Indirizzi:
Chulalongkorn Univ, Aquat Resources Res Inst, Bangkok, Thailand Chulalongkorn Univ Bangkok Thailand sources Res Inst, Bangkok, Thailand Chulalongkorn Univ, Dept Marine Sci, Bangkok, Thailand Chulalongkorn UnivBangkok Thailand Dept Marine Sci, Bangkok, Thailand Chulalongkorn Univ, Dept Microbiol, Bangkok, Thailand Chulalongkorn Univ Bangkok Thailand , Dept Microbiol, Bangkok, Thailand Natl Ctr Genet Engn & Biotechnol, Marine Biotechnol Res Unit, Bangkok, Thailand Natl Ctr Genet Engn & Biotechnol Bangkok Thailand it, Bangkok, Thailand Univ Texas, Med Branch, Natl Resource Ctr Cephalopods, Galveston, TX 77550USA Univ Texas Galveston TX USA 77550 Ctr Cephalopods, Galveston, TX 77550USA
Titolo Testata:
AQUACULTURAL ENGINEERING
fascicolo: 1, volume: 25, anno: 2001,
pagine: 35 - 49
SICI:
0144-8609(200108)25:1<35:DAFOAC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
NITRATE REDUCTION; PENAEUS-MONODON; AQUACULTURE; MATURATION; MANAGEMENT;
Keywords:
closed system; denitrification; Penaeus monodon; recirculation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Menasveta, P Chulalongkorn Univ, Aquat Resources Res Inst, Bangkok, Thailand Chulalongkorn Univ Bangkok Thailand nst, Bangkok, Thailand
Citazione:
P. Menasveta et al., "Design and function of a closed, recirculating seawater system with denitrification for the culture of black tiger shrimp broodstock", AQUACULT EN, 25(1), 2001, pp. 35-49

Abstract

A closed, recirculating seawater system with a denitrification process wasdesigned for the culture of black tiger shrimp broadstock. The system comprised a circular rearing tank (9 m(3) volume), a nitrifying biofilter (6 m(3) volume) and denitrification process. The denitrification process comprised a deoxygenation column, a bacterial substrate column (143 L volume) and a re-aeration column connected to the biofilter. The experimental period was 81 weeks, consisting of 3 sequential trials using different substrates. bacterial inoculates and carbon sources: Trial 1- porous plastic balls for substrate, mangrove soil for inoculant and ethanol for the carbon source; Trial 2- crushed oyster shell for substrate, a strain of laboratory cultured bacteria for inoculant and ethanol For the carbon source: acid Trial 3- crushed oyster shell For the substrate, no inoculant and methanol for the carbon source. The nitrifying biofilter controlled ammonium-N and nitrite-N within acceptable ranges ( < 0.5 and < 0.2 mg L-1, respectively). The nitrate-N, however, became elevated gradually during trial 1 ( < 50 mg L-1). Duringtrial 2, modification of bacterial substrate and the inoculation with denitrifying bacteria reduced nitrate-N in the denitrification column and the rearing tank (P < 0.05). Changing the carbon source to methanol and increasing the hydraulic residence time in trial 3 resulted in a significant reduction (P < 0.05) in nitrate-N (from > 160 to < 25 mg l(-1)) without the need for bacterial inoculation. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 01/12/20 alle ore 06:50:23