JPS6349998B2 - - Google Patents
Info
- Publication number
- JPS6349998B2 JPS6349998B2 JP59006850A JP685084A JPS6349998B2 JP S6349998 B2 JPS6349998 B2 JP S6349998B2 JP 59006850 A JP59006850 A JP 59006850A JP 685084 A JP685084 A JP 685084A JP S6349998 B2 JPS6349998 B2 JP S6349998B2
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen gas
- organic wastewater
- fatty acids
- photosynthetic bacteria
- lower fatty
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002351 wastewater Substances 0.000 claims description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 18
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 12
- 229930195729 fatty acid Natural products 0.000 claims description 12
- 239000000194 fatty acid Substances 0.000 claims description 12
- 150000004665 fatty acids Chemical class 0.000 claims description 12
- 241000894006 Bacteria Species 0.000 claims description 11
- 230000000243 photosynthetic effect Effects 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 claims description 3
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims description 3
- 230000004151 fermentation Effects 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 102000004169 proteins and genes Human genes 0.000 description 6
- 108090000623 proteins and genes Proteins 0.000 description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- 235000000346 sugar Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000010802 sludge Substances 0.000 description 3
- 150000008163 sugars Chemical class 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 235000019260 propionic acid Nutrition 0.000 description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Hydrogen, Water And Hydrids (AREA)
Description
【発明の詳細な説明】
本発明は、例えば、熱処理した水処理汚泥の脱
離水、廃糖密、その他の有機廃水を、光合成細菌
によつて分解させて、水素ガスを発生させ、例え
ば燃料や微生物タンパク原料等として水素ガスを
回収する方法の改良に関する。Detailed Description of the Invention The present invention decomposes, for example, desorbed water of heat-treated water treatment sludge, waste molasses, and other organic wastewater using photosynthetic bacteria to generate hydrogen gas, which can be used as a fuel or This invention relates to improvements in methods for recovering hydrogen gas as a raw material for microbial proteins, etc.
従来、糖やタンパクを多く含む有機性廃水を、
そのまま水素ガス生成反応器で分解していたので
あるが、水素ガス生成速度が遅く、また、器壁に
粘度の高いタンパクが付着して、光透過が不十分
になる等の欠点があつた。 Traditionally, organic wastewater containing a lot of sugar and protein was
The hydrogen gas was decomposed as it was in a hydrogen gas generation reactor, but the hydrogen gas generation rate was slow and highly viscous proteins adhered to the walls of the vessel, resulting in insufficient light transmission.
本発明の目的は、光合成細菌が活発になるよう
に、かつ、光照射を十分に行えるようにして、水
素ガスを能率良く生産できるようにする点にあ
る。 An object of the present invention is to enable photosynthetic bacteria to become active and to provide sufficient light irradiation to efficiently produce hydrogen gas.
本発明による水素ガス製造方法の特徴手段は、
光合成細菌による有機性廃水の分解に先立つて、
有機性廃水を嫌気性細菌を用いたバイオリアクタ
ーで酸発酵させて、低級脂肪酸を生成させること
にあり、その作用効果は次の通りである。 Characteristic means of the hydrogen gas production method according to the present invention are as follows:
Prior to decomposition of organic wastewater by photosynthetic bacteria,
The purpose is to acid ferment organic wastewater in a bioreactor using anaerobic bacteria to produce lower fatty acids, and its effects are as follows.
つまり、酸発酵によつて糖やタンパク等の高級
脂肪酸を酢酸やプロピオン酸等の低級脂肪酸に分
解し、その後で光合成細菌による水素ガス生成を
行うのである。そのように有機酸を予め低級脂肪
酸に分解しておくと、光合成細菌の直接の電子供
与体は多くが低級脂肪酸であるために、効率的な
水素ガス生産が行われると共に、糖やタンパクを
多く含む廃水よりも低級脂肪酸を多く含む廃水の
方が雑菌が少いために、光合成細菌を優勢に保つ
ことができ、さらには、廃水の粘度が低下するた
めに、水素ガス生成反応器における光透過を、器
壁への粘着物によつて害されることなく十分に行
うことができ、全体として、光合成細菌による水
素ガス生産を十分に能率良く行えるようになつ
た。 In other words, higher fatty acids such as sugars and proteins are decomposed into lower fatty acids such as acetic acid and propionic acid through acid fermentation, and then hydrogen gas is produced by photosynthetic bacteria. If organic acids are decomposed into lower fatty acids in advance, many of the direct electron donors for photosynthetic bacteria are lower fatty acids, so hydrogen gas is efficiently produced, and many sugars and proteins can be produced. Since wastewater containing more lower fatty acids has fewer bacteria than wastewater containing lower fatty acids, photosynthetic bacteria can be kept dominant, and the viscosity of the wastewater decreases, which reduces light transmission in the hydrogen gas generation reactor. , can be carried out satisfactorily without being harmed by sticky substances on the vessel walls, and as a whole, hydrogen gas production by photosynthetic bacteria can now be carried out with sufficient efficiency.
次に、第１図により実施例を示す。 Next, an example will be shown with reference to FIG.
菌体を付着させた固定床１ａを有する酸生成バ
イオリアクター１に流路２からの有機性廃水を供
給し、バイオリアクター１において、望ましくは
30〜60℃で３〜７時間、嫌気性細菌により有機性
廃水を嫌気発酵させ、糖やタンパク等の高級脂肪
酸を酢酸やプロピオン酸等の低級脂肪酸に分解さ
せる。 Organic wastewater from the flow path 2 is supplied to an acid-producing bioreactor 1 having a fixed bed 1a to which bacterial cells are attached, and in the bioreactor 1, desirably
Organic wastewater is subjected to anaerobic fermentation using anaerobic bacteria at 30 to 60°C for 3 to 7 hours, decomposing higher fatty acids such as sugars and proteins into lower fatty acids such as acetic acid and propionic acid.
バイオリアクター１からの有機性廃水を水素ガ
ス生成反応器３に供給し、その反応器３に供給
し、その反応器３において、有機性廃水に撹拌機
４を作用させると共に太陽やケイ光灯等の光源５
からの光を照射して、光合成細菌の分解作用によ
つて有機性廃水から水素ガスを生成させ、水素ガ
スをガスホルダー６に回収する。 Organic wastewater from the bioreactor 1 is supplied to a hydrogen gas generation reactor 3, and in the reactor 3, a stirrer 4 is applied to the organic wastewater, and sunlight, fluorescent lamps, etc. light source 5
irradiated with light from the organic wastewater, hydrogen gas is generated from the organic wastewater by the decomposition action of photosynthetic bacteria, and the hydrogen gas is collected in the gas holder 6.
水素ガス生成反応器３からの有機性廃水を固液
分離装置７に供給し、分離水を水処理設備８に供
給すると共に、分離汚泥の一部を還元路９により
水素ガス生成反応器３にかつ残部を汚泥処理設備
１０に供給する。 The organic wastewater from the hydrogen gas generation reactor 3 is supplied to the solid-liquid separator 7, the separated water is supplied to the water treatment equipment 8, and a part of the separated sludge is sent to the hydrogen gas generation reactor 3 through the reduction path 9. And the remainder is supplied to the sludge treatment equipment 10.
次に、実験結果を示す。 Next, the experimental results will be shown.
バイオリアクター１における有機性廃水の滞留
時間と、有機性廃水中の低級脂肪酸濃度の相関を
調べたところ、第２図に示す結果を得た。その結
果、滞留時間を３〜15時間にすると低級脂肪酸濃
度を高くでき、能率を考慮すると３〜７時間が望
ましいことが判つた。 When the correlation between the residence time of organic wastewater in bioreactor 1 and the concentration of lower fatty acids in the organic wastewater was investigated, the results shown in FIG. 2 were obtained. As a result, it was found that lower fatty acid concentration could be increased by setting the residence time to 3 to 15 hours, and in consideration of efficiency, 3 to 7 hours was preferable.
第１図は本発明の実施例を示すフローシートで
あり、第２図は実験結果を示すグラフである。
FIG. 1 is a flow sheet showing an example of the present invention, and FIG. 2 is a graph showing experimental results.
Claims (1)
水素ガスを生成させる方法であつて、前記光合成
細菌による分解に先立つて、有機性廃水を嫌気性
細菌を用いたバイオリアクターで酸発酵させて、
低級脂肪酸を生成させる有機性廃水からの水素ガ
ス製造方法。1 Decompose organic wastewater by photosynthetic bacteria,
A method for producing hydrogen gas, which comprises subjecting organic wastewater to acid fermentation in a bioreactor using anaerobic bacteria prior to decomposition by the photosynthetic bacteria.
A method for producing hydrogen gas from organic wastewater that produces lower fatty acids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP685084A JPS60149391A (en) | 1984-01-17 | 1984-01-17 | Preparation of hydrogen gas from organic waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP685084A JPS60149391A (en) | 1984-01-17 | 1984-01-17 | Preparation of hydrogen gas from organic waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60149391A JPS60149391A (en) | 1985-08-06 |
| JPS6349998B2 true JPS6349998B2 (en) | 1988-10-06 |
Family
ID=11649709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP685084A Granted JPS60149391A (en) | 1984-01-17 | 1984-01-17 | Preparation of hydrogen gas from organic waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60149391A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5717409A (en) * | 1980-07-04 | 1982-01-29 | Kao Corp | Hollow granular percarbonate and its manufacture |
| JPS5856680A (en) * | 1981-09-30 | 1983-04-04 | Agency Of Ind Science & Technol | Cultivation of photohydrogen-producing photosynthetic microorganism |
-
1984
- 1984-01-17 JP JP685084A patent/JPS60149391A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5717409A (en) * | 1980-07-04 | 1982-01-29 | Kao Corp | Hollow granular percarbonate and its manufacture |
| JPS5856680A (en) * | 1981-09-30 | 1983-04-04 | Agency Of Ind Science & Technol | Cultivation of photohydrogen-producing photosynthetic microorganism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60149391A (en) | 1985-08-06 |
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