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A method for preparing biomass gas by fermenting cassava distiller's grains

A technology for biomass gas and cassava distiller's grains, which is applied in microorganism-based methods, biochemical equipment and methods, fermentation, etc., can solve the problem of low methane content in biomass gas, low biomass gas combustion efficiency, and ammonia nitrogen environmental pollution problem, to achieve good economic benefits, reduce the content, increase the effect of the content

Active Publication Date: 2021-12-07
防城港市丰禾曲辰农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The methane content of the biomass gas prepared by the existing technology is not high, and it also contains a lot of non-combustible gases, so that the combustion efficiency of the obtained biomass gas is not high, and the ammonia nitrogen produced during the fermentation process will cause environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Take Gracilaria spp., cut into 2cm segments, wash with clear water, soak for 24 hours, and obtain pretreated Gracilaria;

[0035] (2) Take cassava distiller's grains with a solid content of 20g / L, after ozone treatment for 5min, add 2% cassava distiller's volume nutrient solution and 0.01% molybdate solution with a concentration of 2.0mg / L, inoculate with 10% white rot bacteria , aerobic fermentation at 39°C for 5 days to obtain pretreated distiller's grains;

[0036] (3) Mix 20% of the pretreated distiller's grains with cow dung compost and activated sludge with a solid content of 20g / L at a mass ratio of 1:2, and then add 5% of the total mass of cow dung compost and activated sludge Cow dung biochar was mixed and anaerobically fermented for 2 days to obtain pre-fermented mud;

[0037] (4) Mix the pre-treated Gracilaria and the pre-treated distiller's grains in a closed fermentation tank according to the mass ratio of 1:1 to obtain a mixed solution, and inoculate ...

Embodiment 2

[0045] (1) Take Gracilaria spp., cut into small sections of 4 cm, wash with clear water, soak for 30 hours, and obtain pretreated Gracilaria;

[0046] (2) Get cassava distiller's grains with a solid content of 25g / L, after ozone treatment for 10min, add 5% nutrient solution of distiller's grain volume and 0.05% molybdate solution with a concentration of 3.0mg / L, inoculate 10% white rot bacteria, Aerobic fermentation at 39°C for 10 days to obtain pretreated distiller's grains;

[0047] (3) Cow dung compost and activated sludge with a solid content of 25g / L of 30% of the pretreated distiller's grains are mixed in a mass ratio of 1:3, and then 10% of the total mass of cow dung compost and activated sludge is added Cow dung biochar was mixed and anaerobically fermented for 2 days to obtain pre-fermented mud;

[0048] (4) Mix the pre-treated Gracilaria and the pre-treated distiller's grains in a closed fermentation tank according to the mass ratio of 1:1 to obtain a mixed solution...

Embodiment 3

[0056] (1) Take Gracilaria spp., cut into small sections of 3 cm, wash with clear water, and soak for 26 hours to obtain pretreated Gracilaria;

[0057] (2) Get cassava distiller's grains with a solid content of 22g / L, after ozone treatment for 10min, add 4% nutrient solution of distiller's grain volume and 0.03% molybdate solution with a concentration of 2.5mg / L, inoculate 10% white rot bacteria, Aerobic fermentation at 39°C for 8 days to obtain pretreated distiller's grains;

[0058] (3) Mix 25% of the pretreated distiller's grains with a solid content of 23g / L of cow dung compost and activated sludge at a mass ratio of 1:2, and then add 8% of the total mass of cow dung compost and activated sludge Cow dung biochar was mixed and anaerobically fermented for 2 days to obtain pre-fermented mud;

[0059] (4) Mix the pre-treated Gracilaria and the pre-treated distiller's grains in a closed fermentation tank according to the mass ratio of 1:1 to obtain a mixed solution, and inocu...

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Abstract

The invention provides a method for preparing biomass gas by fermenting cassava distiller's grains, using cassava distiller's grains and Gracilaria spp. Material gas improves the start-up efficiency of methanogenic bacteria and hydrogen-producing bacteria, and reduces impurities such as ammonia nitrogen. The biogas produced by fermentation contains high concentrations of clean energy such as hydrogen and methane, which not only shortens the fermentation time, but also improves the efficiency of raw materials. Utilization rate, the prepared biomass gas has high clean energy content, high combustion efficiency, and good economic benefits.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a method for preparing biomass gas by fermenting distiller's grains. Background technique [0002] At present, 85% of the world's energy is obtained through non-renewable mineral resources. Due to the limited reserves of mineral resources and the enhancement of people's awareness of environmental protection, people start to look for new alternative resources. Biomass gas, commonly known as biogas, is an important energy product that can be used for heating, engine fuel, vehicle fuel, natural gas grid, etc. A large amount of organic waste such as food waste, urban waste, animal manure, industrial and agricultural waste, and lignocellulosic waste can be used as raw materials to prepare biomass gas. [0003] Invention patent CN201310750257.4 A method for preparing biogas from kitchen waste wastewater, comprising the following steps: a) mixing the kitchen waste wastew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P5/02C12R1/01
CPCC12P5/023Y02E50/30
Inventor 罗绍庆
Owner 防城港市丰禾曲辰农业科技有限公司
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