巻号一覧
37 巻 (2001)
- 4 号 p. 135-
- 3 号 p. 93-
- 2 号 p. 55-
- 1 号 p. 1-
37 巻, 4 号
選択された号の論文の6件中1～6を表示しています
- |<
- <
- 1
- >
- >|
-
ZHENYA ZHANG, HONGJIE CHEN, BIN WEI, YANSHENG ZHANG, NORIO SUGIURA, TA ...2001 年 37 巻 4 号 p. 135-140
発行日: 2001/12/15
公開日: 2010/02/26
ジャーナル フリーTwo sets of experiments were designed to study the digestion mechanism of methanogens acclimated by two kinds of carbon source, acetic acid and propionic acid. It was found that the utilization of propionic acid was a complex process, first changing into acetic acid prior to uptake by microorganism. In addition, possible inhibition of high concentration of the substrate was also demonstrated in this paper by using kinetic models. The inhibition behavior on the methane fermentation acts when the total volatile fatty acid (VFA) concentration is up to 3.6g/l, and the inhibition was completely observed for VFA 8.8g/l. The procedure described may be applied in defining theinhibition behavior of methane formation.抄録全体を表示PDF形式でダウンロード (694K) -
常田 聡, 宮野 知子, 小川 知幸, 吉江 幸子, 平田 彰, 太田 有香, 磯部 公信, 稲垣 肇, 片山 卓2001 年 37 巻 4 号 p. 141-149
発行日: 2001/12/15
公開日: 2010/02/26
ジャーナル フリーNitrate-rich wastewater is discharged from the processes of recovering precious metals from industrial wastes. This wastewater contains high concentration of acids and alkalis such as nitric acid and aqueous ammonia, and salts such as sodium chloride and sodium sulfate. Biological nitrogen removal from this wastewater was attempted by using a circulating bioreactor system equipped with an anaerobic packed bed and an aerobic threephase fluidized bed. In a bench-scale system, more than 90% of nitrate was removed in the anaerobic reactor when water temperature was over 15°C. By acclimating nitrifying and denitrifying bacteria with stepwise reduction of hydraulic residence time (HRT), the removal rate of total inorganic nitrogen (TIN) could be increased. In a laboratory-scale system, when inlet TIN concentration was gradually increased to 5000g/m3, TIN removal rate was increased to 0.32kg/m3/d. A nitrification batch test revealed that nitrification activity was quite sensitive to the concentrations of inorganic ions. In contrast, a denitrification batch test confirmed that the sludge of the anaerobic reactor of the benchscale system had been acclimated to denitrify even at hyper-saline condition where NaCl concentration was over 8.0%.抄録全体を表示PDF形式でダウンロード (2936K) -
MICHIHIKO IKE, MASANORI FUJITA, IVAN SEKOULOV, JOACHIM BEHRENDT2001 年 37 巻 4 号 p. 151-159
発行日: 2001/12/15
公開日: 2010/02/26
ジャーナル フリーA variety of biomass samples were examined for their anaerobic or anoxic ammonium oxidation (Anammox) potentials. The biomass samples were collected from various types of wastewater treatment processes including a conventional activated sludge process, nitrification/denitrification processes (one sludge systems), a biological P removal process, denitrification processes and an anaerobic digestion process. Two denitrifying biomass samples exhibited significant removals of both NH4-N and NOx-N (NO2-N or NO3-N) under an anoxic condition without organic carbon when both N constituents co-existed, suggesting the occurrence of an Anammox phenomenon. The one was biomass obtained from an autotrophic denitrification process using sulfide as the electron donor, and the other from a denitrifying process using the BOD which is absorbed onto a primary sludge. An Anammox potential seems to be able to be found in the biomass which is continuously exposed to anoxic and no or low organic carbon conditions, though it cannot be ubiquitously detected in normal wastewater treatment processes.抄録全体を表示PDF形式でダウンロード (1108K) -
CHIKA TADA, OSAMU NISHIMURA, TOMOAKI ITAYAMA, YUHEI INAMORI, MASATOSHI ...2001 年 37 巻 4 号 p. 161-172
発行日: 2001/12/15
公開日: 2010/02/26
ジャーナル フリーTo investigate the influence of materials released from lake sediment on the flora of phytop1ankton, we cultured three algal species, the green algae Scenedesmus acutus, the cyanobacterium Microcystis aeruginosa and filamentous cyanobacterium Oscillatoria agardhii with water obtained from an elution experiment of lake sediment. The effect of materials released from sediment on the growth of algae clearly varied from species to species of algae. The growth of green algae S. acutus was influenced by nitrogen released from sediment, though nitrogen was not actually supplied from the sediment somuch. The growth of filamentous cyanobacterium O. agardhii was mainly influenced by phosphorus released from the sediment. On the other hand, the growth of cyanobacterium M. aeruginosa was influenced by some materials, which were not nitrogen and phosphorus. From the results of an incubation experiment with adding EDTA and past research reports, it was suggested that these materials were organic complexes of iron, which stability constants was high, and inhibited M. aeurignosa from getting iron. This is a new finding in the relation between algae and lake sediment, and indicates that organic matter as complex-ligand released from sediment is one of the important factors affecting the flora of phytoplankton.抄録全体を表示PDF形式でダウンロード (1507K) -
竹崎 義則, 瓜生 勝嗣, 辻 隆正, 清水 康利, 山海 敏弘2001 年 37 巻 4 号 p. 173-181
発行日: 2001/12/15
公開日: 2010/02/26
ジャーナル フリーFor the purpose to designing the disposer wastewater treatment system for condominiums, the biological dissolved rate for the crushed garbage was measured. The garbage was treated as the anaerobic, aerobic or intermittent aerobic condition respectively. The order of the dissolved rate was aerobic > intermittent > anaerobic under the condition of 15 and 25°C. The residual after the 30d treatment for aerobic and intermittent treatments was about 26% and consisted of cellulose and inorganic particles such as eggshell and bone. Using the measured dissolved rate value, the performance of continuous feed garbage dissolving reactor was estimated. The estimation was found to agree well to the measurement.抄録全体を表示PDF形式でダウンロード (1068K) -
齊藤 安貴子, 伊藤 公明, 田中 陽光, 折谷 隆之2001 年 37 巻 4 号 p. 183-187
発行日: 2001/12/15
公開日: 2010/02/26
ジャーナル フリーBiodegradation of 2-methylenebornane (2-MB) by Enterobacter cloaceae, which is one of the dehydration products of 2-methylisoborneol (2-MIB) led to 2-MIB, 2-methylcamphene (2-MC) and an unidentifiable oxidation product, in addition to the previously reported camphor and lactonic compound. On the other hand, 2-MC, which is another dehydration product of 2-MIB was oxidatively degraded to fenchone by the same bacterium.抄録全体を表示PDF形式でダウンロード (551K)
- |<
- <
- 1
- >
- >|