巻号一覧
後続誌
51 巻, 6 号
選択された号の論文の8件中1～8を表示しています
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古賀 雄造1972 年 51 巻 6 号 p. 315
発行日: 1972/06/20
公開日: 2010/06/28
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七字 三郎1972 年 51 巻 6 号 p. 316-327
発行日: 1972/06/20
公開日: 2010/06/28
ジャーナル フリーReconsidering the harmful influences introduced by the recent technology, the preservation of environmental nature is becoming the important subject to the mentioned technology in this decade.
Therefore, it should be stress on the following themes such as 1) the developmental project for the maintenance of material and energy resources, and 2) the treatment of wastes and the recovery of resources during production and consumption processes.
In this review, several facts and appearent contributions obtained by various kinds of microorganisms have summarized. It would be say that 1) new fields of biomassproduction and fermentation production, and 2) wastes treatment and resources recovery using with microbial functions were disussed concretely in this article.抄録全体を表示PDF形式でダウンロード (1435K) -
松村 繁1972 年 51 巻 6 号 p. 328-329
発行日: 1972/06/20
公開日: 2010/06/28
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日鉄式コークス炉の大型化真田 貢1972 年 51 巻 6 号 p. 330-334
発行日: 1972/06/20
公開日: 2010/06/28
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藤原 宣昭, 吉村 太1972 年 51 巻 6 号 p. 335-343
発行日: 1972/06/20
公開日: 2010/06/28
ジャーナル フリーKinetics of oxidation of pyridine-extracted residue of Oyubari-coal with dichromate in glacial acetic acid or AcOH-AcONa buffer solution was studied by determining the amount of Cr (VI) reduced by coal.
The rate of reduction of Cr (VI) was controlled by various factors, i. e., the amount and the surface area of coal, concentration of Cr (VI), shaking frequency of the reaction mixture, concentration of AcOH in solvent, acidity of solvent and reaction temperature. The rate of oxidation was proportional to the amount of coal, but the kinetic order of Cr (VI) concentration increased gradually with increasing amount of reduced Cr (VI).
The activation energy of reaction increased from 3-6 kcal/mol to 20-30 kcal/mol with proceeding oxidation of coal.
The 1st step oxidation of coal was assumed to be controlled by diffusion of Cr (VI) because oxidation of coal was promoted by vigorous shaking and because of lower value of activation energy.
But, with proceeding reaction, the rate might be controlled by oxidation reaction because activation energy became higher value.抄録全体を表示PDF形式でダウンロード (911K) -
藤原 宣昭, 吉村 太1972 年 51 巻 6 号 p. 344-353
発行日: 1972/06/20
公開日: 2010/06/28
ジャーナル フリーFrom the oxidation products of pyridine-extarcted residue of Oyubaricoal with potassium dichromate in acetic acid under various conditions, the following knowledge was obtained.
(1) The 1st step reaction was assumed to be the oxidation of active CH bonds of coal to carbonyl type from relation between increasing weight or decreasing H/C of oxidized coal and the amount of consumed Cr (VI). Some soluble acid in reaction solvent and fumic acid seemed to be produced by further progressive oxdation.
(2) Carboxyl group content of oxidized coal and its aq. KOH-extracted residue increased linearly with the amount of consumed Cr (VI), but that of fumic acid was constant independent of reaction conditions.
(3) Carbonyl group content of aq. KOH-extracted residue increased with degree of oxidation, on the other hand, phenolic hydroxyl group content remained constant (about 2m mol/g), which was more thand that of original coal (1.0m mol/g).
(4) From that ultimate analyses and equivalent weights (for COOH) of fumic acid produced under different reaction conditions were nearly the same, fumic acid seemed to be the material with relation to the structural unit of coal.
(5) Chromic acid oxidation has advantages of selective oxidation for coal and no side-reaction other than oxidation.抄録全体を表示PDF形式でダウンロード (966K) -
石崎 克典, 大城 照男1972 年 51 巻 6 号 p. 354-359
発行日: 1972/06/20
公開日: 2010/06/28
ジャーナル フリーExhaust gas from the Lurgi type contact sulfuric acid plant is treated by a desulfurizing plant based on the lime-qygsum process in the Koyasu Works, Fertilizer Division, Nippon, Kokan. The exhaust gas, discharged in an amount of approximately 60, 000 Nm3/hr contains sulfur oxides consisting of 2, 000-3, 000 ppm of SO2 and about 400 ppm of SO3, which decreases to less than 300 ppm after treatment. This exhaust gas desulfurizer, installed in July 1964, has an object to convert SO2 absorbed by lime milk into calcium sulfite and to obtain high quality gypsum through air oxidation. Initial difficulties in operation caused by the trouble in treating slurry were solved by the modifications and improvements made in the plant and the operating practices, and in January 1966, the plant was successfully brought into continuous operation under stable conditions. Further improvements in facilities and automation have been made in an attempt to save labor.
With a view to developing the exhaust gas desulfurization process applicable to ordinary emissions, a pilot plant of 2, 000Nm3/hr based on the use of boiler exhaust gas was constructed in the Koyasu works with reference to the exhaust gas desulfurizing technique and the experience acquired in operating this sulfuric acid plant. Experiments were started in October 1971, and the results permitted establishment of a exhaust gas desulfurizing technique applicable to ordinary exhaust gas.抄録全体を表示PDF形式でダウンロード (692K) -
1972 年 51 巻 6 号 p. 365-369
発行日: 1972/06/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (608K)
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