Novel process for preparing C-Fe shell-core magnetic active carbon by utilizing waste biomasses
A technology of waste biomass and magnetic activated carbon, which is applied in the field of resource utilization of waste biomass, and can solve problems such as in-situ incineration and environmental pollution
Inactive Publication Date: 2010-09-29
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
View PDF3 Cites 25 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0008] Mix sawdust with a mixed solution of ferric chloride and zinc chloride at a solid-to-liquid ratio of 1:5 (the mass ratio of sawdust, ferric chloride and zinc chloride is 20:1:10), and age at 60° C. for 6 hours. Then the obtained mixture was put into a cracking furnace, and under the protection of a nitrogen atmosphere, the heating rate was raised to 700° C. for cracking at a rate of 5° C. / min. The cracking time was 30 minutes. After the heating was stopped, it was naturally cooled to room temperature under the protection of nitrogen. The product obtained by the reaction is washed with dilute acid and deionized water respectively, and then dried to obtain the product.
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
Login to View More Abstract
The invention relates to a novel process for preparing magnetic active carbon with a C-Fe shell-core structure by utilizing waste biomasses. The process overcomes the defects of complicated preparation process, high cost and high price of the traditional shell-core active carbon, and by utilizing the form change of the waste biomasses in the presence of heating, the processes of carbonization, activation, magnetism giving and protection of the biomasses are achieved in one step. The key of the process lies in selecting an appropriate activating agent, controlling an appropriate carbonizing and heating system and carbonizing atmosphere and ensuring that the active carbon completely coats iron in the production process. The obtained active carbon has high specific surface area, pore volume and magnetic intensity and the C-Fe shell-core structure. Proved by experiments, after the active carbon is soaked in a 2M salpeter solution for 2h, the magnetism cannot be lost, and a product can be used in a strongly acidic solution.
Description
technical field [0001] The invention relates to the treatment and disposal of biomass waste, which belongs to the research and development of solid waste recycling technology in the field of environmental protection and resource comprehensive utilization, and is especially suitable for the resource utilization of a large amount of waste biomass produced in agriculture and forestry. Background technique [0002] Magnetic activated carbon with a protected magnetic center, that is, a core-shell structure, is a research hotspot in the field of activated carbon. It has important applications as a catalyst carrier and adsorbent in clean production, especially sewage treatment. Activated carbon with a shell-core structure can overcome the disadvantages of magnetic loss of general magnetic activated carbon in strong acidic solutions. At present, the preparation of this type of activated carbon is generally divided into several steps: first prepare activated carbon, introduce magnetis...
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
Login to View More IPC IPC(8): H01F1/09H01F1/00C01B31/08
Inventor 张付申刘振刚吴建芝
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
