Izvorni znanstveni članak
Effects of Inhibitory Factor on Uptake Rate of Ammonia-Nitrogen with Sterile Ulva sp. for Water Quality Control of Intensive Shrimp Culture Ponds
H. Habaki
orcid.org/0000-0003-2512-1389
; Department of International Development Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
S. Tajiri
; Fujifilm Corporation
R. Egashira
; Department of International Development Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
K. Sato
; Mitsubishi Gas Chemical Company, Inc.
T. Eksangsri
; Department of Chemical Engineering, Faculty of Engineering, Thammasat University
Sažetak
Ammonia-nitrogen uptake by sterile Ulva sp. was studied for the control of culture pond water of intensive shrimp farming. The uptake rates were measured by batch and semi-continuous operations, and analyzed with the Michaelis-Menten model of uncompetitive inhibition. For the batch uptake operations, the Michaelis-Menten parameters
were estimated, and the maximum rate and Michaelis constants were estimated as 3.4 × 10–2 kg kg–1 h–1 and 5.5 × 10–3 kg m–3, respectively. The inhibitory factor increased with the uptake time and with the decrease of the seaweed density. In the cases of semi-continuous operations, the seaweed could continuously treat with the model farming culture solution. Although the ratio of the seaweed density relative to the rate of ammonia-nitrogen generation should be appropriately adjusted to keep lower inhibitory factor in the seaweed, the ammonia-nitrogen concentration could be maintained at a relatively low level during operation. Then the ammonia-nitrogen uptake by the alga water was roughly simulated and operation with moderate density of the algae in the pond
could maintain the ammonia-nitrogen concentration at a sufficiently low level in the shrimp farming pond. The suggested treatment process might be attractive to control pond water quality for intensive shrimp farming.
Ključne riječi
Ammonia-nitrogen uptake; sterile Ulva sp.; water quality control of intensive shrimp culture ponds; Michaelis-Menten model; inhibitory factor
Hrčak ID:
108957
URI
Datum izdavanja:
30.9.2013.
Posjeta: 756 *