Method for preparing hydrogen with biology and with utilization of organic waste water step

An organic wastewater, cascade technology, applied in water pollutants, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as low conversion rate of biological hydrogen production

Active Publication Date: 2008-09-24
HARBIN INST OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of the low conversion rate of the existing anaerobic activated sludge for organ

Method used

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  • Method for preparing hydrogen with biology and with utilization of organic waste water step
  • Method for preparing hydrogen with biology and with utilization of organic waste water step
  • Method for preparing hydrogen with biology and with utilization of organic waste water step

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specific Embodiment approach 1

[0014] Specific embodiment one: organic waste water cascade utilization biological hydrogen production is carried out in the double-chamber microbial battery with ion-exchange membrane, is realized by the following steps: 1. Start the reactor: the anode chamber is in the exhausted state during the start-up process. Oxygen state, put anaerobic activated sludge into the anode chamber, the dosage of anaerobic activated sludge accounts for 50% to 60% of the volume of the anode chamber, and then pass the culture solution with a pH value of 6.8 to 7.0 into the anode chamber, and the culture solution The volume ratio of the anaerobic activated sludge to the anaerobic activated sludge is 1:1. At the same time, add phosphate buffer solution accounting for 90% of the volume of the cathode chamber to the cathode chamber, and aerate the air in the cathode chamber in the first 28 to 35 days of starting. The aeration rate is 0.3 ~0.6m 3 / min, when the battery voltage is lower than 50mV, com...

specific Embodiment approach 2

[0017] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the nutrient solution of step one is made of 0.31g ammonium chloride, 0.13mg potassium chloride, 5.618g sodium dihydrogen phosphate dihydrate, 6.155g phosphoric acid dihydrate Disodium hydrogen, 2g sodium acetate trihydrate, 1L deionized water and 2ml trace element solution. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Specific embodiment three: the difference between this embodiment and specific embodiment two is: every liter of trace element liquid is made of 600mg calcium chloride, 400mg magnesium chloride, 80mg ferrous chloride, 400mg cobalt chloride, cupric chloride, 100mg chloride Manganese, 10mg zinc chloride, 10mg sodium selenate, 15mg sodium tungstate, 20mg nickel chloride, 100mg disodium ethylenediaminetetraacetic acid (disodium EDTA), 10mg ammonium molybdate and the rest of water. Others are the same as in the second embodiment.

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Abstract

The invention discloses a method of hydrogen production of biological cascade utilization on organic wastewater and relates to a method of producing hydrogen. The invention solves the existing problem of low conversion on biological hydrogen production with organic wastewater fermentation by using anaerobic activated sludge. The hydrogen production method of the invention is carried out as follows: firstly an anode chamber is in the anaerobic condition during startup procedure, anaerobic activated sludge is put into the anode chamber, the nutrient solution with pH value of 6.8 to 7.0 is introduced into the anode chamber, phosphate buffer is added into a cathode chamber, aeration is carried out in the cathode chamber in the previous 28 to 35 days of the startup procedure, startup is successful till the output voltage is continuously and steadily over 400 mV; secondly the organic wastewater is filled into the anode chamber from an inlet of the anode chamber and the organic wastewater is processed in the anode chamber, consequently hydrogen is obtained in the cathode chamber. The coulombic efficiency of the organic substrate conversion of the method reaches as high as over 80 percent, the electron transfer efficiency of transferring the cathode electron into hydrogen approaches to 100 percent, the purity of the hydrogen obtained in the cathode chamber in the entire process reaches 99.5 percent, the energy conversion efficiency of the entire process reaches over 80 percent, and the hydrogen yield calculated based on the input voltage is 288 percent.

Description

technical field [0001] The invention relates to a method for producing hydrogen. Background technique [0002] At present, more than 80% of energy and organic raw materials come from fossil energy. With the depletion of fossil energy and the increasingly serious environmental problems brought about by its use, human beings will face serious energy crisis and environmental pollution. Hydrogen is an ideal new energy source, which has the characteristics of abundant resources, high combustion calorific value, clean and pollution-free, and wide application range. Therefore, hydrogen has attracted much attention from all over the world in future energy. The use of biomass (organic wastewater, straw-like agricultural and forestry waste, organic waste, etc.) for microbial fermentation to produce hydrogen has multiple advantages such as pollution control, environmental protection, and production capacity, and has broad development prospects. Microbial hydrogen production technolo...

Claims

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Application Information

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IPC IPC(8): C12P3/00C02F3/34C02F101/30
Inventor 王爱杰刘文宗任南琪刘丽红张运晴孙丹程浩毅成绍安L·布鲁斯
Owner HARBIN INST OF TECH
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