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Method for producing sodium alginate and co-producing ethanol and seaweed organic fertilizer

A technology for producing sodium alginate and sodium alginate, which is applied in the fields of organic fertilizer and fermentation, can solve the problems of low and backward bioethanol, and achieve the effect of improving the extraction rate

Inactive Publication Date: 2013-08-07
QINGDAO BETTER BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of fuel ethanol in my country mainly focuses on terrestrial raw materials such as straw, bagasse, wood chips, and cassava, but there are few studies on the preparation of bioethanol from marine biological resources, and the technical research on the development of seaweed biomass energy is relatively backward. Research results on the production of bioethanol from seaweed processing waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Accurately weigh 100g of dried and pulverized kelp, add 600ml of fresh drinking water, and soak in a water bath at 55°C for 1 hour; then use HCl to adjust the pH to 3, add 0.1% cellulase, and hydrolyze for 5 hours; then, add 0.05% protease was used to continue the enzymatic hydrolysis for 2 hours, the enzymatic hydrolysis process was continuously stirred, and after the end of the enzymatic hydrolysis, it was centrifuged to obtain the pretreated kelp and the enzymatic hydrolysis solution.

[0018] Add 1000ml of 0.5% Na to the pretreated kelp 2 CO 3 Digest the solution in a water bath at 55°C for 1h, then add 1000ml of fresh drinking water at 50°C to dilute for 0.5h, fully dilute evenly, and filter through a 250-mesh silk screen; add 6ml of hydrogen peroxide to the filtrate, and decolorize at 60°C for 0.5h , and then heated up to 90°C for 10 minutes; filtered with 300-mesh silk screen, and slowly added 60ml of 10% CaCl to the filtrate 2 Solution, the sodium alginate in ...

Embodiment 2

[0022] Accurately weigh 1 ton of dried and crushed kelp, add fresh drinking water with a raw material weight of 8 tons, soak in a water bath at 55°C for 3 hours, then adjust the pH to 7 with HCl, add 0.5% cellulase, and perform enzymatic hydrolysis for 12 hours; then , adding 0.2% protease to continue the enzymolysis for 5 hours, stirring continuously during the enzymolysis process, centrifuging after the end of the enzymolysis to obtain the pretreated kelp and the enzymolysis solution.

[0023] Pretreated kelp with 10 tons of 2% Na 2 CO 3 Digest the solution in a water bath at 60°C for 3 hours, then add 50 tons of fresh drinking water at 70°C to dilute it for 2 hours, after fully diluting evenly, filter it through a 400-mesh silk screen; add 0.18 tons of hydrogen peroxide to the filtrate, and decolorize it at 60°C for 2 hours , and then heated up to 90°C for 30 minutes; filtered with a 500-mesh silk screen, and slowly added 1 ton of 10% CaCl to the filtrate 2 Solution, the ...

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Abstract

The invention discloses a method for producing sodium alginate and co-producing ethanol and a seaweed organic fertilizer. The method comprises the following steps of: with brown algae kelp serving as a raw material, pre-processing through cellulase and compound protease in an enzymolysis manner; decomposing cellulose in the kelp into microbially available monosaccharide and oligosaccharide in order to ferment to produce ethanol; preparing the seaweed organic fertilizer through the rest fermentation broth with little kelp residue; extracting and separating sodium alginate from the pre-processed kelp; and then performing a dilute alkali digestion technology and a calcium coagulating-ion exchange method to obtain high-quality sodium alginate. According to the method, the preprocessing is performed through bio-enzyme, and the main components, namely, cellulose, protein and the like in the kelp, are separated in advance through the cellulose and protease, thus high extraction rate of the sodium alginate is grained; simultaneously, wastes generated in processing are utilized to prepare a fuel, namely, ethanol; and the waste liquid and waste residues remained in ethanol preparation are utilized to prepare the seaweed organic fertilizer, therefore, high-valued utilization of the kelp is realized, and marine biomass energy is developed.

Description

technical field [0001] The invention relates to a method for producing sodium alginate to co-produce ethanol and seaweed organic fertilizer, which belongs to the field of comprehensive utilization of seaweed. Background technique [0002] At present, the world is facing the huge pressure of energy shortage and environmental pollution, and the development of clean and renewable energy has become an important means to solve the crisis of petrochemical resources and energy. Bioethanol has been widely concerned as a clean fuel and gasoline additive. At present, the preparation of fuel ethanol in my country mainly focuses on terrestrial raw materials such as straw, bagasse, wood chips and cassava, but there are few studies on the preparation of bioethanol from marine biological resources, and the technical research on the development of seaweed biomass energy is relatively backward, and there is no Research results on the production of bioethanol from seaweed processing waste. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04C12P19/14C12P7/08C05F11/00
Inventor 任宪君张秋艳曹荣军杨庆利武鑫
Owner QINGDAO BETTER BIO TECH
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