Unlock instant, AI-driven research and patent intelligence for your innovation.

Hybrid anaerobic fermentation method for processing wood fiber raw material

A lignocellulosic raw material, anaerobic fermentation technology, applied in fermentation, bio-organic part treatment, organic fertilizer, etc., can solve the problems of poor accessibility response performance, steric obstacles, high degree of cellulose polymerization and reduced crystallinity, etc. Achieve the effect of promoting anaerobic biodegradation speed and degradation conversion rate

Inactive Publication Date: 2010-10-06
NANJING UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main obstacles in the direct hydrolysis of lignocellulosic raw materials by microbial enzymes: one is the steric barriers of the difficult-to-hydrolyze lignin around cellulose for microbial enzymes to effectively contact cellulose, and the other is the high degree of polymerization and reduced crystallinity of cellulose itself restricts its accessibility and makes it less reactive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid anaerobic fermentation method for processing wood fiber raw material
  • Hybrid anaerobic fermentation method for processing wood fiber raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Lignocellulosic raw materials such as corn stalks are first crushed into 1-2cm particles, moistened with water (fresh materials do not need to be added with water) and pre-irradiated with 5KGy γ-rays, and then mixed with ground easily biodegradable organic matter (such as soil) Soybean milk), and the inoculum are uniformly mixed in a certain proportion (the ratio of potatoes to corn stalks is 1:4; the ratio of inoculum to mixed raw materials is 1:5; the above ratios are all calculated according to the total solid content TS). The mixed raw materials are fed into the acid-generating reaction zone (device) of the two-phase anaerobic reactor through the feeding device, and then water is sprayed from the upper part of the acid-generating reaction zone (device). If the C / N after mixing the raw materials still deviates greatly from the suitable C / N range of 20:1~30:1 required by anaerobic fermentation, it may be considered to add NH to the spray water 4 HCO 3 and other nitro...

Embodiment 2

[0028] Lignocellulosic raw materials such as rice straw are first crushed into 7-10cm particles, and after being wetted with water (fresh materials do not need to be added with water), they are pretreated with 20KGy γ-rays, and then mixed with crushed easily biodegradable organic matter such as sugar beet leaves, and The inoculum is evenly mixed according to a certain ratio (the ratio of sugar beet leaf to rice straw is 1:6; the ratio of inoculum to mixed raw material is 1:4. The above ratios are all calculated as TS). After mixing, the raw materials are fed into the single-phase anaerobic reactor (such as the fully mixed anaerobic anaerobic reactor CSTR) from the feeding device. The total solid content TS of raw materials is 10%. If the mixed raw materials are not in this concentration range after mixing, water or anaerobic reactor effluent can be added to adjust. At the same time, if the C / N of raw materials after mixing is still suitable for anaerobic fermentation When the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a mixed anaerobic fermenting method, which comprises the following steps: grinding wood fiber; irradiating through gamma-ray for 0.5-50KGy; blending with easily biological decomposing material evenly; adding in the anaerobic reactor to do anaerobic ferment; setting the weight rate of seeding material quantity and total solid content at 1:10-2:1 and the rate of wood fiber and easily decomposing material at 10:1-1:1.

Description

technical field [0001] The invention belongs to the field of renewable energy development and utilization and environmental protection, and specifically relates to a synergistic effect between two types of raw materials with complementary fermentation characteristics and combined with gamma-ray irradiation pretreatment to improve anaerobic conversion of lignocellulosic raw materials Efficient mixed anaerobic fermentation method. Background technique [0002] Lignocellulosic raw materials can be converted into energy through different technical approaches, including thermochemical gasification, compaction, cracking liquefaction, and anaerobic fermentation for methane production. Compared with other conversion technologies, anaerobic fermentation has the ability to produce energy, and the fermented solids and liquids can also be used as organic fertilizers to return to the soil, thereby realizing the cascade recycling of materials and energy, so it is more in line with sustain...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C12P5/02C12P1/00C05F11/00
CPCY02E50/343Y02E50/30Y02W30/40
Inventor 郑正李继红杨世关孟卓
Owner NANJING UNIV