Journal article
Waste excretion characteristics of Manila clams ( Tapes philippinarum) under different temperature conditions
Aquacultural engineering, Vol.20(4), pp.231-244
1999
Handle:
https://hdl.handle.net/2376/108460
Abstract
Water recirculating systems have been used in the shellfish industry for depuration and wet-storage. Knowledge of shellfish excretion characteristics is critical to recirculating system design. In this study, the excretion rate of total ammonia nitrogen (TAN), total Kjeldahl nitrogen (TKN), and 5-day biochemical oxygen demand (BOD
5) from Manila clams (
Tapes philippinarum) were investigated under both laboratory and commercial conditions. The laboratory tests were conducted under temperatures ranging from 3 to 30°C. The experimental results showed that temperature was a key factor in determining the excretion rate of all the above parameters. The relationship between TAN excretion rate (
R
TAN) and temperature (
T) can be represented by an exponential function (
R
TAN=0.57×1.25
T
). For the temperature range between 3 and 20°C, the daily mean excretion rates of TAN, TKN and BOD
5 ranged between 1.5–46.1, 4.8–131.0 and 57.4–219.4 mg per kilogram of the clams (wet weight with shell on), respectively. There were linear correlations between TAN, TKN and BOD
5 production rates. The data presented in this paper can be used to estimate waste generation from a given shellfish processing operation and to size the waste treatment components for a recirculating depuration (or wet-storage) system.
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Details
- Title
- Waste excretion characteristics of Manila clams ( Tapes philippinarum) under different temperature conditions
- Creators
- Songming Zhu - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164-6120, USABrooks Saucier - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164-6120, USAJames Durfey - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164-6120, USAShulin Chen - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164-6120, USABill Dewey - Taylor Shellfish Company, Shelton, WA 98584, USA
- Publication Details
- Aquacultural engineering, Vol.20(4), pp.231-244
- Academic Unit
- Biological Systems Engineering, Department of
- Publisher
- Elsevier B.V
- Identifiers
- 99900583058101842
- Language
- English
- Resource Type
- Journal article