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Composite material for reducing greenhouse gases discharge and application thereof

A composite material and greenhouse gas technology, which can be used in solid waste removal, water/sludge/sewage treatment, chemical instruments and methods, etc. Effect

Inactive Publication Date: 2009-09-30
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For ponds, urban landscape water bodies, rivers, ditches, paddy fields, constructed wetlands, swamps, lakes, oceans, landfills and other anaerobic environments that emit methane and produce serious water internal source pollution, the composite material of the present invention can be used to suppress methane Bacterial activity, transformation and fixation of organic carbon in the sediment into inorganic carbon, thereby preventing the emission of greenhouse gases

Method used

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  • Composite material for reducing greenhouse gases discharge and application thereof
  • Composite material for reducing greenhouse gases discharge and application thereof
  • Composite material for reducing greenhouse gases discharge and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The natural gypsum and the goethite ore are respectively crushed into powders smaller than 10 meshes, and mixed according to a mass ratio of 1:1 to become a composite material for reducing greenhouse gas emissions.

[0038]When in use, first take samples to measure the content of organic carbon in the depth range of 10cm-20cm in the upper part of the pond bottom mud. According to the mass ratio of bottom mud organic carbon to composite material is 1:1-1:2, the composite material is evenly sprinkled into the pond. In water, because the powder particles are relatively coarse, the composite material particles can sink into different depths of the sediment, and due to the reduction and dissolution of microorganisms such as sulfate-reducing bacteria and iron-reducing bacteria, the production of methane is inhibited, and unstable organic carbon is converted into stable carbon dioxide. of inorganic carbon. The experimental results in the laboratory show that after the composit...

Embodiment 2

[0040] The natural anhydrite and the goethite ore are respectively crushed into powders smaller than 10 meshes, and mixed according to a mass ratio of 1:1 to become a composite material for reducing greenhouse gas emissions.

[0041] When using it, first take samples to measure the content of organic carbon in the depth range of 10cm-20cm in the upper part of the pond bottom mud, and spread the composite material evenly into the urban landscape water body according to the mass ratio of organic carbon to composite material of 1:1-1:2. Because the powder particles are relatively coarse, the composite material particles can sink into different depths of the sediment, and due to the reduction and dissolution of microorganisms such as sulfate-reducing bacteria and iron-reducing bacteria, the production of methane is inhibited, and unstable organic carbon is converted into stable inorganic carbon. The experimental results in the laboratory show that after the composite material is p...

Embodiment 3

[0043] The waste slag rich in calcium sulfate and the red clay rich in iron are crushed into powders less than 100 mesh, and mixed according to a mass ratio of 1:2 to become a composite material for reducing greenhouse gas emissions. The composite material is used for the covering soil of the landfill, and the thickness of each layer is laid according to 3-10cm, which can effectively inhibit the emission of methane from the landfill. Experimental results in the laboratory show that garbage fermentation no longer produces exhaust gas, neither CO 2 produced, nor H 2 S, methane gas generation. Nitrogen was used to blow off, and the collected gas was analyzed by gas chromatography, and the existence of methane was not detected. The reason was that the presence of sulfate and iron oxides inhibited the activity of methane bacteria, and the CO produced by metabolism 2 As the pH of the system rises and is absorbed into calcite, H 2 S is converted to iron sulfide.

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PUM

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Abstract

Provided is a composite material for reducing greenhouse gases discharge and application thereof. The composite material is made by mixing raw material being rich of sulphates and ferric iron oxide or hydroxides, the molar ratio of S and Fe in the composite material is from 20:1 to 1:3, the composite material is a particle or powder solid matter. By means of adding the composite material particle or powder into a circumstance being rich of organic matter and anaerobic microorganism such as a pool, a cityscape water, a river, a ditch, a paddy field, an artificial wetland, a cienaga, a lake, a sea and a refuse landfill, it is capable of restraining the activity of methane bacteria, translating unstable organic carbon into inorganic carbonate and reducing greenhouse gases discharge with the action of the composite material and the microbe.

Description

technical field [0001] The present invention relates to a composite material and its application for reducing the emission of greenhouse gases in an environment rich in organic matter and anaerobic microorganisms, more specifically a composite material used to suppress methane production and convert unstable organic carbon into inorganic carbon, Composite materials and methods for their use that reduce greenhouse gas emissions. Background technique [0002] Environments such as lakes, reservoirs, bays, plain ditches and ditches, urban rivers, urban landscape water bodies, and landfills usually contain rich organic matter. Methane bacteria, sulfate reducing bacteria, etc., can produce methane, hydrogen sulfide, carbon dioxide and other gases. The hydrogen sulfide produced by anaerobic organic matter in the bottom mud reacts with iron and other metal ions in the bottom mud and is fixed in the bottom mud. CO produced anaerobically from organic matter in sediment 2 It has a l...

Claims

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Application Information

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IPC IPC(8): C02F11/00B09B5/00
Inventor 陈天虎金鑫孙玉兵岳正波王进金杰
Owner HEFEI UNIV OF TECH
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