CN111172228A - A method for producing biogas by using camellia oleifera husk - Google Patents
A method for producing biogas by using camellia oleifera husk Download PDFInfo
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- 241000526900 Camellia oleifera Species 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000010903 husk Substances 0.000 title claims abstract 18
- 238000000855 fermentation Methods 0.000 claims abstract description 91
- 230000004151 fermentation Effects 0.000 claims abstract description 68
- 241000894006 Bacteria Species 0.000 claims abstract description 34
- 239000011259 mixed solution Substances 0.000 claims abstract description 27
- 239000002699 waste material Substances 0.000 claims abstract description 15
- 241000588749 Klebsiella oxytoca Species 0.000 claims abstract description 12
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 claims abstract description 11
- 239000003337 fertilizer Substances 0.000 claims abstract description 11
- 241000282849 Ruminantia Species 0.000 claims abstract description 9
- 241001302035 Methanothermobacter Species 0.000 claims abstract 5
- 239000000203 mixture Substances 0.000 claims abstract 3
- 241001122767 Theaceae Species 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 235000018553 tannin Nutrition 0.000 claims description 12
- 229920001864 tannin Polymers 0.000 claims description 12
- 239000001648 tannin Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- 239000000706 filtrate Substances 0.000 claims description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 8
- 239000004202 carbamide Substances 0.000 claims description 8
- 235000013379 molasses Nutrition 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims description 8
- 239000000292 calcium oxide Substances 0.000 claims description 7
- 235000012255 calcium oxide Nutrition 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004108 freeze drying Methods 0.000 claims description 3
- 235000012054 meals Nutrition 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 2
- 235000018597 common camellia Nutrition 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 241000209507 Camellia Species 0.000 abstract 2
- 241000202974 Methanobacterium Species 0.000 description 24
- 239000003921 oil Substances 0.000 description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- 235000013399 edible fruits Nutrition 0.000 description 15
- 240000001548 Camellia japonica Species 0.000 description 12
- 238000002156 mixing Methods 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 241000894007 species Species 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000010495 camellia oil Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000009024 Ceanothus sanguineus Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 235000003385 Diospyros ebenum Nutrition 0.000 description 1
- 241000792913 Ebenaceae Species 0.000 description 1
- 240000003133 Elaeis guineensis Species 0.000 description 1
- 235000001950 Elaeis guineensis Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 240000003553 Leptospermum scoparium Species 0.000 description 1
- 235000015459 Lycium barbarum Nutrition 0.000 description 1
- 240000007817 Olea europaea Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P39/00—Processes involving microorganisms of different genera in the same process, simultaneously
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
- C05F5/002—Solid waste from mechanical processing of material, e.g. seed coats, olive pits, almond shells, fruit residue, rice hulls
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H1/00—Processes for the preparation of sugar derivatives
- C07H1/06—Separation; Purification
- C07H1/08—Separation; Purification from natural products
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H13/00—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids
- C07H13/02—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids
- C07H13/08—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids having the esterifying carboxyl radicals directly attached to carbocyclic rings
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
本发明公开了一种利用油茶果壳生产沼气的方法，是将油茶果壳10‑20公斤打粉，加入尿素30‑50克，糖蜜3‑5公斤，茶粕5‑10公斤，加水混合至60‑100公斤，混合均匀，得混合液；将混合液加入沼气发酵罐，再加入EM菌和产酸克雷伯氏菌组成的一次发酵菌，厌氧发酵6‑8天，至pH降低至4‑5，调节PH至6‑7，加入由索氏甲烷杆菌、甲酸甲烷杆菌、反刍甲烷杆菌组成的二次发酵菌，开始收集产生的沼气，厌氧发酵12‑16天后结束。本发明以林业废弃物油茶果壳作为主要原料通过厌氧发酵生产沼气，沼气作为新能源燃料，发酵后的沼液用于作叶面肥，沼渣用于有机肥，实现油茶果壳的完全资源化利用，具有良好的经济效益，社会效益和生态效益，为建设生态型新农村提供有效的途径。The invention discloses a method for producing biogas by using camellia husks. ‑100 kg, mix evenly to obtain a mixed solution; add the mixed solution into a biogas fermenter, then add primary fermentation bacteria consisting of EM bacteria and Klebsiella oxytoca, anaerobic fermentation for 6‑8 days, until the pH drops to 4 ‑5, adjust the pH to 6‑7, add the secondary fermentation bacteria consisting of Methanobacter soxhlet, Methanobacillus formate, and Methanobacter ruminant, start to collect the generated biogas, and end after 12-16 days of anaerobic fermentation. The invention uses forestry waste camellia husk as the main raw material to produce biogas through anaerobic fermentation, the biogas is used as new energy fuel, the fermented biogas slurry is used as foliar fertilizer, and the biogas residue is used for organic fertilizer, so as to realize the complete production of camellia oleifera husk. The utilization of resources has good economic, social and ecological benefits, and provides an effective way to build an ecological new countryside.
Description
Technical Field
The invention relates to the technical field of forestry waste resource utilization, in particular to a method for producing biogas by using camellia oleifera shells.
Background
The tea-oil trees are called tea trees and tea-oil trees, are one of four woody edible oil source tree species in the world (the other three species are coconut, olive and oil palm respectively), are one of four woody oil plants in China (the other three species are ebony, tung oil and walnut respectively), are perennial shrubs or trees, and have a history of cultivation and utilization for two thousand years. In China, the main producing areas are south and southwest, and the method is mainly concentrated in Hunan, Guangxi, Guangdong and the like, accounts for 83.2 percent of the total area of the whole country, and is a specific pure natural high-grade oil material in China. In recent years, the planting area and yield of the camellia oleifera are increasing year by year. The main components of the camellia oleifera shell comprise cellulose (13.87-20.95%), hemicellulose (34.21-49.34%), lignin (30.07-36.23%), tannin (about 2.26%), saponin (about 5%) and the like.
At present, the oil-tea camellia fruit shell is usually used as waste material for treatment or used as fuel for warming in winter after the oil-tea camellia fruit is dried and deseeded, and the oil-tea camellia fruit shell is not well developed and utilized, so that the resource is greatly wasted. At present, the direct composting fermentation of the camellia oleifera shells to prepare the organic fertilizer has also been reported. The biogas is a combustible gas produced by various organic substances through the fermentation of microorganisms under the anaerobic condition and at a proper temperature and pH value. The use of camellia oleifera shells for the production of biogas is disclosed in the prior art. Therefore, the invention provides that the oil tea fruit shells are crushed and then subjected to anaerobic fermentation to produce biogas and collect methane as new energy fuel, the biogas slurry is used as a foliar fertilizer, and the biogas residues are used as an organic fertilizer, so that the resource utilization of the oil tea fruit shells is completely realized.
Disclosure of Invention
The invention aims to provide a method for producing biogas by using oil tea shells. According to the method, the camellia oleifera shells are crushed and then subjected to anaerobic fermentation to produce biogas serving as a new energy fuel, the fermented biogas slurry is used as a foliar fertilizer, and the biogas residues are used as an organic fertilizer, so that resource utilization of the camellia oleifera shells is completely realized.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a method for producing biogas by using oil tea shells comprises the following steps:
(1) pulverizing 10-20 kg of oil-tea camellia shells into powder, adding 30-50 g of urea, 3-5 kg of molasses and 5-10 kg of tea seed cake, adding water, mixing to 60-100 kg, and mixing uniformly to obtain a mixed solution;
(2) adding the mixed solution into a biogas fermentation tank, adding primary fermentation bacteria consisting of EM (effective microorganisms) and Klebsiella oxytoca, performing anaerobic fermentation for 6-8 days until the pH value is reduced to 4-5, adjusting the pH value to 6-7, adding secondary fermentation bacteria consisting of methanobacterium soxhlet, methanobacterium formate and methanobacterium ruminate, finishing the anaerobic fermentation for 12-16 days, and collecting the generated biogas.
Further, the anaerobic fermentation is water-sealed fermentation at normal temperature; the fermentation temperature need not be controlled.
Furthermore, the adding amount of the primary fermentation bacteria is 0.3-0.8% of the mass of the mixed solution, and the adding amount of the secondary fermentation bacteria is 0.5-1.0% of the mass of the mixed solution.
Further, the mass ratio of the EM bacteria to the Klebsiella oxytoca in the primary fermentation bacteria is 1-3: 1.
Further, the mass ratio of the methanobacterium sojae, the methanobacterium formate and the methanobacterium ruminants in the secondary fermentation bacteria is 3-5:1-3: 0.5-2. Further, step (2) is to adjust the pH with quick lime.
Further, the oil tea fruit shell is pulverized, then tannin is extracted, and then fermentation is carried out.
Further, the extraction method of the tannin comprises the following steps: pulverizing oil tea fruit shell, adding water and sodium hydroxide, reacting at 120 deg.C under pressure, filtering, and collecting filtrate; concentrating the filtrate, freeze-drying to obtain tannin powder, and reusing the rest waste material in producing marsh gas. Preferably, the addition amount of the water is 5-10% of the mass of the water.
And further, filtering waste residues generated after fermentation is finished, wherein fermentation liquor is used as a foliar fertilizer, and fermentation residues are used as an organic fertilizer.
Further, the filtrate can be acidified by hydrochloric acid and filtered to obtain acidified tannin.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. according to the invention, the forestry waste oil-tea camellia shells are used as a main raw material to produce biogas through anaerobic fermentation, the biogas is used as a new energy fuel, the fermented biogas slurry is used as a foliar fertilizer, and the biogas residues are used as an organic fertilizer, so that the complete resource utilization of the oil-tea camellia shells is realized, and the method has good economic benefit, social benefit and ecological benefit, and provides an effective way for building an ecological new countryside.
2. The method comprises the steps of adding different strains in two batches, adding EM (effective microorganisms) and Klebsiella oxytoca for fermentation in the first batch, wherein the Klebsiella oxytoca can increase the content of organic acid and is beneficial to the growth of methane bacteria during secondary fermentation; the second batch of strains is added with methanobacterium soxhlet, methanobacterium formate and methanobacterium ruminatum, so that the fermentation period is shortened, and the gas production is obviously increased.
3. The invention takes the oil-tea camellia shells, urea, molasses and tea meal as raw materials to produce the biogas, can provide sufficient nutrient components such as carbon sources, nitrogen sources and the like for the zymocyte, accelerates the propagation of the zymocyte, and is beneficial to shortening the fermentation period and improving the gas yield.
4. The tannin is extracted from the oil tea fruit shell and then used for fermentation to produce the biogas, and the extracted tannin is widely used in the industries of food, medicine, chemical industry, daily use and the like, so that the oil tea fruit shell can generate greater economic benefit.
5. The method for anaerobic fermentation does not need to control the fermentation temperature, is simple to operate and reduces the cost compared with the conventional fermentation.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
Example 1
A method for producing biogas by using oil tea shells comprises the following steps:
(1) pulverizing 15 kg of oil-tea camellia shells, adding 40 g of urea, 3 kg of molasses and 5 kg of tea seed cake, adding water, mixing to 80 kg, and uniformly mixing to obtain a mixed solution;
(2) adding the mixed solution into a biogas fermentation tank, adding primary fermentation bacteria consisting of EM bacteria and Klebsiella oxytoca in a mass ratio of 2:1, wherein the addition amount is 0.5% of the mass of the mixed solution, carrying out anaerobic fermentation for 7 days, reducing the pH to 4.5, adjusting the pH to 6 with quick lime, adding secondary fermentation bacteria consisting of methanobacterium soxhlet, methanobacterium formate and methanobacterium ruminants in a mass ratio of 3:2:2, wherein the addition amount is 0.7% of the mass of the mixed solution, collecting the generated biogas, and finishing the anaerobic fermentation for 14 days.
(3) And filtering waste residues generated after fermentation, wherein the fermentation liquor is used as a foliar fertilizer, and the fermentation residues are used as an organic fertilizer.
The biogas yield at the end of the fermentation in this example was 781ml/kgVS with a methane content of 83.6%.
Example 2
A method for producing biogas by using oil tea shells comprises the following steps:
(1) pulverizing 20 kg of oil-tea camellia shells, adding 50 g of urea, 5 kg of molasses and 8 kg of tea seed cake, adding water, mixing to 100 kg, and uniformly mixing to obtain a mixed solution;
(2) adding the mixed solution into a biogas fermentation tank, adding primary fermentation bacteria consisting of EM bacteria and Klebsiella oxytoca in a mass ratio of 3:1, wherein the addition amount is 0.3% of the mass of the mixed solution, carrying out anaerobic fermentation for 8 days, reducing the pH to 5, adjusting the pH to 7 with quick lime, adding secondary fermentation bacteria consisting of methanobacterium soxhlet, methanobacterium formate and methanobacterium ruminants in a mass ratio of 5:3:1, wherein the addition amount is 1.0% of the mass of the mixed solution, collecting the generated biogas, and finishing the anaerobic fermentation for 15 days.
(3) And filtering waste residues generated after fermentation, wherein the fermentation liquor is used as a foliar fertilizer, and the fermentation residues are used as an organic fertilizer.
The biogas yield at the end of the fermentation in this example was 693ml/kgVS with a methane content of 85.2%.
Example 3
A method for producing biogas by using oil tea shells comprises the following steps:
(1) pulverizing 10 kg of oil-tea camellia shells, adding 40 g of urea, 4 kg of molasses and 6 kg of tea seed cake, adding water, mixing to 60 kg, and uniformly mixing to obtain a mixed solution;
(2) adding the mixed solution into a biogas fermentation tank, adding primary fermentation bacteria consisting of EM bacteria and Klebsiella oxytoca in a mass ratio of 2:1, wherein the addition amount is 0.8% of the mass of the mixed solution, performing anaerobic fermentation for 6 days, reducing the pH to 4, adjusting the pH to 6 with quick lime, adding secondary fermentation bacteria consisting of methanobacterium soxhlet, methanobacterium formate and methanobacterium ruminants in a mass ratio of 4:2:1, wherein the addition amount is 0.5% of the mass of the mixed solution, collecting the generated biogas, and finishing the anaerobic fermentation for 14 days.
(3) And filtering waste residues generated after fermentation, wherein the fermentation liquor is used as a foliar fertilizer, and the fermentation residues are used as an organic fertilizer.
The biogas yield at the end of the fermentation in this example was 615ml/kgVS with a methane content of 78.3%.
Example 4
A method for producing biogas by using oil tea shells comprises the following steps:
(1) crushing oil tea fruit shells, adding water foam to the oil tea fruit shells, adding sodium hydroxide with the water mass of 10%, performing pressure reaction at 120 ℃, filtering, and collecting filtrate for later use; concentrating the filtrate at 120 deg.C, freeze drying to obtain tannin powder, and using the rest oil tea fruit shell waste material for producing biogas;
(2) pulverizing 15 kg of oil-tea camellia shells, adding 45 g of urea, 5 kg of molasses and 8 kg of tea seed cake, adding water, mixing to 100 kg, and uniformly mixing to obtain a mixed solution;
(3) adding the mixed solution into a biogas fermentation tank, adding primary fermentation bacteria consisting of EM bacteria and Klebsiella oxytoca in a mass ratio of 1:1, wherein the addition amount is 0.6% of the mass of the mixed solution, carrying out anaerobic fermentation for 7 days, reducing the pH to 5, adjusting the pH to 6.5 by using quicklime, adding secondary fermentation bacteria consisting of methanobacterium soxhlet, methanobacterium formate and methanobacterium ruminants in a mass ratio of 3:2:1, wherein the addition amount is 0.8% of the mass of the mixed solution, collecting the generated biogas, and finishing the anaerobic fermentation after 12 days.
(4) And filtering waste residues generated after fermentation, wherein the fermentation liquor is used as a foliar fertilizer, and the fermentation residues are used as an organic fertilizer.
The biogas yield at the end of the fermentation in this example was 643ml/kgVS with a methane content of 80.9%.
Example 5
A method for producing biogas by using oil tea shells comprises the following steps:
(1) crushing oil tea fruit shells, adding water foam to the oil tea fruit shells, adding sodium hydroxide with the water mass of 8%, performing pressure reaction at 120 ℃, filtering, and collecting filtrate for later use; concentrating the filtrate at 120 deg.C, adding hydrochloric acid for acidification, and vacuum filtering to obtain acidified tannin; the residual oil tea fruit shell waste is used for producing methane;
(2) pulverizing 20 kg of oil-tea camellia shells, adding 50 g of urea, 4 kg of molasses and 10 kg of tea seed meal, adding water, mixing to 80 kg, and uniformly mixing to obtain a mixed solution;
(3) adding the mixed solution into a biogas fermentation tank, adding primary fermentation bacteria consisting of EM bacteria and Klebsiella oxytoca in a mass ratio of 2:1, wherein the addition amount is 0.5% of the mass of the mixed solution, carrying out anaerobic fermentation for 7 days, reducing the pH to 5, adjusting the pH to 6 with quick lime, adding secondary fermentation bacteria consisting of methanobacterium soxhlet, methanobacterium formate and methanobacterium ruminants in a mass ratio of 5:3:1, wherein the addition amount is 1% of the mass of the mixed solution, collecting the generated biogas, and finishing the anaerobic fermentation after 12 days.
(4) And filtering waste residues generated after fermentation, wherein the fermentation liquor is used as a foliar fertilizer, and the fermentation residues are used as an organic fertilizer.
The biogas yield at the end of the fermentation in this example was 763ml/kgVS with a methane content of 81.7%.
The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and such substitutions and modifications are to be considered as within the scope of the invention.
Claims (10)
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| CN104017621A (en) * | 2014-06-09 | 2014-09-03 | 南昌大学 | Method for producing methane by carrying out co-digestion on pig manure and tea-oil tree shell |
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| CN104017621A (en) * | 2014-06-09 | 2014-09-03 | 南昌大学 | Method for producing methane by carrying out co-digestion on pig manure and tea-oil tree shell |
| CN107827485A (en) * | 2017-11-13 | 2018-03-23 | 淮阴师范学院 | A kind of bio-bacterial manure, preparation method and its application in soil phosphorus decomposing |
| CN111850052A (en) * | 2020-07-02 | 2020-10-30 | 华南农业大学 | Biochar-enhanced method for gas production by mixed fermentation of kitchen waste and sugarcane tails |
| CN113943757A (en) * | 2021-11-22 | 2022-01-18 | 国网内蒙古东部电力有限公司电力科学研究院 | Biogas production method by combined pretreatment of wheat straw |
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Application publication date: 20200519 Assignee: GUANGXI SANCHUN BIOTECHNOLOGY CO.,LTD. Assignor: GUANGXI ZHUANG AUTONOMOUS REGION FORESTRY Research Institute Contract record no.: X2024980018729 Denomination of invention: A method for producing biogas using oil tea fruit shells Granted publication date: 20220510 License type: Common License Record date: 20241017 |