Combined biological hydrogen production method by adopting sludge and fibers of recovered waste paper

A technology of waste paper fiber and biological hydrogen production, which is applied in the direction of biofuel, fermentation, etc., can solve the problems of waste of resources and energy, few utilization methods, and a huge amount of recycled waste paper fiber, etc., and achieves easy hydrolysis and fermentation, major economic Effects of Value and Social Meaning

Inactive Publication Date: 2011-09-07
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0006] However, at present, there is no report on the method of using anaerobic sludge to mix and reuse waste paper fiber to ferment biological hydrogen production. Due to the huge amount of recycled waste paper fiber, the recycling efficiency is low, and the utilization channels are few, resulting in waste of resources and the current situation in my country. Energy issues are becoming increasingly prominent

Method used

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  • Combined biological hydrogen production method by adopting sludge and fibers of recovered waste paper
  • Combined biological hydrogen production method by adopting sludge and fibers of recovered waste paper
  • Combined biological hydrogen production method by adopting sludge and fibers of recovered waste paper

Examples

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example 1

[0023] Put 200mL of anaerobic sludge into the biological hydrogen production reactor, add distilled water to make it up to 1L, mix well, adjust the initial pH value to 7.0 with 1mol / L HCl solution, fill the hydrogen production reactor with nitrogen for 15s, and seal the hydrogen production reactor. fermentation reaction. Control the reaction temperature of the constant temperature shaker to 35°C, and the shaker speed to 80r / min. After 12 days of reaction, 27mL of gas is obtained. After sampling from the gas sampling port, it is absorbed by dilute NaOH lye, and all of them are CO 2 , without H 2 produce.

example 2

[0025] Take 20g of recycled waste paper fiber to carry out the orthogonal test of dilute sulfuric acid hydrolysis pretreatment, get the hydrolyzate and the recycled waste paper fiber after hydrolysis, the waste paper fiber composition is: cellulose 64.8%, hemicellulose 7.70%, ash content 5.51% , moisture content 9.06%. The recycled waste paper fibers after hydrolysis were washed with distilled water to neutrality, and mixed with 200ml of anaerobic sludge and 800ml of distilled water. The sludge was taken from a sewage plant. The total solid content (TS) of the sludge was 88.9%, and the volatile solid content (VS) 87.5%, VS / TS 98.4%, pH 7.41. The hydrolysis conditions of dilute sulfuric acid pretreatment take five factors: reaction temperature, mass fraction of dilute sulfuric acid, volume-to-mass ratio of dilute sulfuric acid to recycled waste paper fiber, reaction time, and particle size of waste paper fiber. Each factor has three levels. Orthogonal test factor levels are sh...

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Abstract

The invention discloses a combined biological hydrogen production method by adopting sludge and fibers of recovered waste paper, which comprises the following steps of: subjecting the fibers of the recovered waste paper to the pretreatment of dilute sulphuric acid hydrolysis to obtain hydrolysate and the recovered and hydrolyzed fibers of the waste paper; washing the recovered and hydrolyzed fibers of recovered waste paper to be neutral by using distilled water, airing and drying the fibers of recovered waste paper, mixing the fibers of recovered waste paper with anaerobic sludge and the distilled water to obtain a mixed solution, wherein the mass-to-volume ratio of the anaerobic sludge to the recovered fibers of recovered waste paper is 10-15ml / g, and the volume-to-mass ratio of the distilled water to the recovered fibers of recovered waste paper is 45-55ml / g; and regulating the initial reaction pH value of the mixed solution to be 7.0; guiding the mixed solution and the hydrolysate into a biological hydrogen production reactor, and filling inert gases into the reactor, wherein the reaction temperature of a constant-temperature shaking table is controlled as 35+ / -1 DEG C, and the reaction time is 10-12d. The fibers in waste paper are hydrolyzed and fermented through anaerobic microorganisms in the sludge, and the fibers are decomposed to produce H2, CO2 and ethanol. In the invention, the biological hydrogen production can be realized successfully at a strict anaerobic environment, and a novel means of recovering and utilizing the fibers of the waste paper is provided.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a method for biological hydrogen production, in particular to a method for biological hydrogen production by mixing sludge and recycled waste paper fibers. Background technique [0002] Hydrogen energy is characterized by high efficiency and environmental friendliness, and will become an ideal form of energy utilization in the future. Hydrogen has the following significant advantages: 1. High combustion value: Hydrogen is the lightest element in the periodic table. Compared with other substances, it has the highest energy ratio, reaching 34.15kcal / g; while gasoline is only 13kcal / g , coal is only 4.837kcal / g; 2, clean and pollution-free: hydrogen combustion does not produce greenhouse gases and other harmful substances to the human body, and the combustion product of hydrogen and oxygen is the purest substance-water, which will not produce any pollution to the envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P3/00C12P7/10
CPCY02E50/16Y02E50/10
Inventor 万金泉黄明智马邕文章佩丽王艳
Owner SOUTH CHINA UNIV OF TECH
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