Selection of commercial biofilters for rearing aquatic animals in closed system

A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifyi...
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Autor*in:	Chuayrodmod, J. [verfasserIn] Chiayvareesajja, S. [verfasserIn] Leelasuphakul, W. [verfasserIn] Puetpaiboon, U. [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2007

Schlagwörter:	A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively.

Übergeordnetes Werk:	In: Songklanakarin Journal of Science and Technology (SJST) - Prince of Songkla University, 2005, 29(2007), 4, Seite 945-957
Übergeordnetes Werk:	volume:29 ; year:2007 ; number:4 ; pages:945-957

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Katalog-ID:	DOAJ070578133

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650		4	\|a A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon
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allfields	(DE-627)DOAJ070578133 (DE-599)DOAJ60d1cbecc2e949fdaaadd488bf58abdc DE-627 ger DE-627 rakwb eng T1-995 Q1-390 Chuayrodmod, J. verfasserin aut Selection of commercial biofilters for rearing aquatic animals in closed system 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively. A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively. Technology T Technology (General) Science Q Science (General) Chiayvareesajja, S. verfasserin aut Leelasuphakul, W. verfasserin aut Puetpaiboon, U. verfasserin aut In Songklanakarin Journal of Science and Technology (SJST) Prince of Songkla University, 2005 29(2007), 4, Seite 945-957 (DE-627)500635552 (DE-600)2204982-4 01253395 nnns volume:29 year:2007 number:4 pages:945-957 https://doaj.org/article/60d1cbecc2e949fdaaadd488bf58abdc kostenfrei http://www.sjst.psu.ac.th/journal/29-4_online/0125-3395-29-4-0945-0957.pdf kostenfrei https://doaj.org/toc/0125-3395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2007 4 945-957
spelling	(DE-627)DOAJ070578133 (DE-599)DOAJ60d1cbecc2e949fdaaadd488bf58abdc DE-627 ger DE-627 rakwb eng T1-995 Q1-390 Chuayrodmod, J. verfasserin aut Selection of commercial biofilters for rearing aquatic animals in closed system 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively. A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively. Technology T Technology (General) Science Q Science (General) Chiayvareesajja, S. verfasserin aut Leelasuphakul, W. verfasserin aut Puetpaiboon, U. verfasserin aut In Songklanakarin Journal of Science and Technology (SJST) Prince of Songkla University, 2005 29(2007), 4, Seite 945-957 (DE-627)500635552 (DE-600)2204982-4 01253395 nnns volume:29 year:2007 number:4 pages:945-957 https://doaj.org/article/60d1cbecc2e949fdaaadd488bf58abdc kostenfrei http://www.sjst.psu.ac.th/journal/29-4_online/0125-3395-29-4-0945-0957.pdf kostenfrei https://doaj.org/toc/0125-3395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2007 4 945-957
allfields_unstemmed	(DE-627)DOAJ070578133 (DE-599)DOAJ60d1cbecc2e949fdaaadd488bf58abdc DE-627 ger DE-627 rakwb eng T1-995 Q1-390 Chuayrodmod, J. verfasserin aut Selection of commercial biofilters for rearing aquatic animals in closed system 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively. A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively. Technology T Technology (General) Science Q Science (General) Chiayvareesajja, S. verfasserin aut Leelasuphakul, W. verfasserin aut Puetpaiboon, U. verfasserin aut In Songklanakarin Journal of Science and Technology (SJST) Prince of Songkla University, 2005 29(2007), 4, Seite 945-957 (DE-627)500635552 (DE-600)2204982-4 01253395 nnns volume:29 year:2007 number:4 pages:945-957 https://doaj.org/article/60d1cbecc2e949fdaaadd488bf58abdc kostenfrei http://www.sjst.psu.ac.th/journal/29-4_online/0125-3395-29-4-0945-0957.pdf kostenfrei https://doaj.org/toc/0125-3395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2007 4 945-957
allfieldsGer	(DE-627)DOAJ070578133 (DE-599)DOAJ60d1cbecc2e949fdaaadd488bf58abdc DE-627 ger DE-627 rakwb eng T1-995 Q1-390 Chuayrodmod, J. verfasserin aut Selection of commercial biofilters for rearing aquatic animals in closed system 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively. A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively. Technology T Technology (General) Science Q Science (General) Chiayvareesajja, S. verfasserin aut Leelasuphakul, W. verfasserin aut Puetpaiboon, U. verfasserin aut In Songklanakarin Journal of Science and Technology (SJST) Prince of Songkla University, 2005 29(2007), 4, Seite 945-957 (DE-627)500635552 (DE-600)2204982-4 01253395 nnns volume:29 year:2007 number:4 pages:945-957 https://doaj.org/article/60d1cbecc2e949fdaaadd488bf58abdc kostenfrei http://www.sjst.psu.ac.th/journal/29-4_online/0125-3395-29-4-0945-0957.pdf kostenfrei https://doaj.org/toc/0125-3395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2007 4 945-957
allfieldsSound	(DE-627)DOAJ070578133 (DE-599)DOAJ60d1cbecc2e949fdaaadd488bf58abdc DE-627 ger DE-627 rakwb eng T1-995 Q1-390 Chuayrodmod, J. verfasserin aut Selection of commercial biofilters for rearing aquatic animals in closed system 2007 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively. A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively. Technology T Technology (General) Science Q Science (General) Chiayvareesajja, S. verfasserin aut Leelasuphakul, W. verfasserin aut Puetpaiboon, U. verfasserin aut In Songklanakarin Journal of Science and Technology (SJST) Prince of Songkla University, 2005 29(2007), 4, Seite 945-957 (DE-627)500635552 (DE-600)2204982-4 01253395 nnns volume:29 year:2007 number:4 pages:945-957 https://doaj.org/article/60d1cbecc2e949fdaaadd488bf58abdc kostenfrei http://www.sjst.psu.ac.th/journal/29-4_online/0125-3395-29-4-0945-0957.pdf kostenfrei https://doaj.org/toc/0125-3395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_138 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 29 2007 4 945-957
language	English
source	In Songklanakarin Journal of Science and Technology (SJST) 29(2007), 4, Seite 945-957 volume:29 year:2007 number:4 pages:945-957
sourceStr	In Songklanakarin Journal of Science and Technology (SJST) 29(2007), 4, Seite 945-957 volume:29 year:2007 number:4 pages:945-957
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively. Technology T Technology (General) Science Q Science (General)
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container_title	Songklanakarin Journal of Science and Technology (SJST)
authorswithroles_txt_mv	Chuayrodmod, J. @@aut@@ Chiayvareesajja, S. @@aut@@ Leelasuphakul, W. @@aut@@ Puetpaiboon, U. @@aut@@
publishDateDaySort_date	2007-01-01T00:00:00Z
hierarchy_top_id	500635552
id	DOAJ070578133
language_de	englisch
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callnumber-first	T - Technology
author	Chuayrodmod, J.
spellingShingle	Chuayrodmod, J. misc T1-995 misc Q1-390 misc A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon misc coconut shell charcoal misc zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable misc though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off misc thus increasing the concentrations of ammonia misc nitrite and suspended solids toward the end of the experimental period. The catfish growth rate misc survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d misc 84.44-95.56% and 0.21-0.25 misc respectively. misc Technology misc T misc Technology (General) misc Science misc Q misc Science (General) Selection of commercial biofilters for rearing aquatic animals in closed system
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topic_title	T1-995 Q1-390 Selection of commercial biofilters for rearing aquatic animals in closed system A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon coconut shell charcoal zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off thus increasing the concentrations of ammonia nitrite and suspended solids toward the end of the experimental period. The catfish growth rate survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d 84.44-95.56% and 0.21-0.25 respectively
topic	misc T1-995 misc Q1-390 misc A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon misc coconut shell charcoal misc zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable misc though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off misc thus increasing the concentrations of ammonia misc nitrite and suspended solids toward the end of the experimental period. The catfish growth rate misc survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d misc 84.44-95.56% and 0.21-0.25 misc respectively. misc Technology misc T misc Technology (General) misc Science misc Q misc Science (General)
topic_unstemmed	misc T1-995 misc Q1-390 misc A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon misc coconut shell charcoal misc zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable misc though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off misc thus increasing the concentrations of ammonia misc nitrite and suspended solids toward the end of the experimental period. The catfish growth rate misc survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d misc 84.44-95.56% and 0.21-0.25 misc respectively. misc Technology misc T misc Technology (General) misc Science misc Q misc Science (General)
topic_browse	misc T1-995 misc Q1-390 misc A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon misc coconut shell charcoal misc zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable misc though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off misc thus increasing the concentrations of ammonia misc nitrite and suspended solids toward the end of the experimental period. The catfish growth rate misc survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d misc 84.44-95.56% and 0.21-0.25 misc respectively. misc Technology misc T misc Technology (General) misc Science misc Q misc Science (General)
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title	Selection of commercial biofilters for rearing aquatic animals in closed system
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title_full	Selection of commercial biofilters for rearing aquatic animals in closed system
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author-letter	Chuayrodmod, J.
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title_sort	selection of commercial biofilters for rearing aquatic animals in closed system
callnumber	T1-995
title_auth	Selection of commercial biofilters for rearing aquatic animals in closed system
abstract	A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively.
abstractGer	A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively.
abstract_unstemmed	A comparative study was made to select the most suitable biofilter from 7 types of commercial water filters by rearing hybrid catfish (Clarias macrocephalus x C. gariepinus) in aquaria for 64 days. It was found that diminishing concentrations of ammonia and nitrite were attributed mainly to nitrifying bacteria that convert ammonia into nitrite and nitrate which required a minimum period of 16-28 days for the process to function. Low absorption of ammonia was achieved through using activated carbon, coconut shell charcoal, zeolite and ceramic. Durability and filtering efficiency of the filters depended upon porosity and amount of biofilm on the filter surface. The filter using one coarse meshed plastic sheet and 37 bioballs was the most suitable, though it caused a problem with low total alkalinity resulting in mortality of the biofilm which peeled off, thus increasing the concentrations of ammonia, nitrite and suspended solids toward the end of the experimental period. The catfish growth rate, survival and FCR in all treatments were in the ranges of 7.39-8.91 g/d, 84.44-95.56% and 0.21-0.25, respectively.
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title_short	Selection of commercial biofilters for rearing aquatic animals in closed system
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Selection of commercial biofilters for rearing aquatic animals in closed system

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