Bioassimilation versus nitrification for the removal of ammonia in aquaculture biofilters /
(either smooth or rough) in the biofilter significantly
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (either smooth or rough) in the biofilter significantly (p<0.01). Rough beads provided a small, though statistically accelerated the removal of ammonia without accumulation of accumulation of nitrate. beads as substrate in 15 miniature aquaculture biofilters. bioassimilation of ammonia. Treatments in the first biofilters which did not receive an organic load, the biofiltration and subjected to organic loading with glucose biofiltration without beads was replaced by smooth-bead conditions and manipulated to encourage converted to biomass was non-significant indicates that a eitherautotrophicnitrification or heterotrophic enhanced nitrification over that with empty biofilters experiment were biofiltration without beads, biofiltration glucose-loaded biofilters tended to accumulate more biomass. heterotropic microbial biomass. The third experiment However, that the difference in the fraction of ammonia in all three experiments (p<0.01). When compared with nitrate. A C:N ratio of 6.6:1 resulted in a small, non- repeated the second, except the C:N molar ratio was decreased severely scratched beads; each treatment was replicated 5 significant improvement in ammonia conversion and a lesser significant, improvement in nitrification over smooth beads The biofilters were fed nutrients to simulate aquaculture third process, heterotrophic nitrification-denitrification, this would effect the bioassimilation of the ammonia into Three experiments were performed with 3-mm floating plastic times. For the second experiment, the treatment involving to 6.6:1. Results indicated that the presence of beads to give a C:N molar ratio of 19.9:1. It was hypothesized that was occurring as well. A C:N ratio of 19.9:1 greatly with smooth (as manufactured) beads, and biofiltration with |
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| Item Description: | "Major subject: Wildlife and Fisheries Sciences". Vita. |
| Physical Description: | xi, 65 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 43-49. |