Preparation method for biomass-based magnetic hydrothermal charcoal
A technology for magnetic water and biomass, which is applied in the preparation/purification of carbon, oxides of ferrous iron, iron oxide/hydroxide, etc., which can solve the problems of complex preparation process and so on.
Active Publication Date: 2019-11-08
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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[0004]However, due to the two-step preparation of magnetic hydrothermal carbon in the prior art, although the adsorption sites on the surface of hydrothermal carbon are increased, the preparation process is more complicated
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] The ferrous sulfate that takes by weighing 1g is dissolved in the deionized water of 25ml, makes the aqueous solution of ferrous sulfate, takes by weighing 4g sodium hydroxide and is settled to 100ml, makes the sodium hydroxide solution that concentration is 1mol / L, and 3 ± Put 0.01g of masson pine sawdust, ferrous sulfate solution, 3ml of sodium hydroxide solution and 3ml of 1,2-propanediol into the reaction kettle, stir until it becomes a paste, then let th...
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Abstract
The invention provides a preparation method for biomass-based magnetic hydrothermal charcoal. The preparation method is characterized by comprising the following steps: step 1, pulverizing a biomass raw material; step 2, adding a magnetizing agent, an activator, a reducing agent and the pulverized biomass raw material into a reaction kettle, carrying out stirring, subjecting the reaction kettle tosealing and then to heating in an oven after stirring, and after heating, taking out the reaction kettle and cooling the reaction kettle to room temperature; and step 3, taking out the material in the reaction kettle, washing the material thoroughly with deionized water until washing liquid is colorless and transparent, drying the washed substance in the oven, and taking out the dried substance so as to obtain a finished product. The preparation method of the invention realizes the preparation of the biomass-based magnetic hydrothermal charcoal in one step; thus, the method of the invention is simple in preparation process, and the magnetic hydrothermal charcoal has stable performance.
Description
technical field [0001] The invention belongs to the field of hydrothermal carbon preparation, in particular to a preparation method of biomass-based magnetic hydrothermal carbon. Background technique [0002] At present, with the rapid development of my country's economy, the demand for water resources is increasing, but at the same time, the pollution of water resources is also becoming more and more serious. In many water pollutions, heavy metal pollution accounts for a considerable proportion, and heavy metal pollution is easy It is enriched and expanded in the biological chain, and is highly toxic. Therefore, the excessive heavy metals in water and the problems caused by them have seriously endangered the ecological environment and human life and health. Biomass hydrothermal charcoal refers to a type of biomass that maintains a certain hydrothermal reaction time at a certain temperature (150-375°C) and autogenous pressure in a closed system, and the resulting surface cont...
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IPC IPC(8): C01G49/08C01B32/05
CPCC01G49/08C01B32/05C01P2004/03C01P2002/72C01P2004/04C01P2006/42C01P2006/12C01P2006/16Y02E50/10Y02E50/30
Inventor 盖希坤马晓锋刘万鹏李音单胜道杨瑞芹袁涛徐晓琳
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY