Method for preparing nano iron/carbon compound material by kitchen waste

A technology of food waste and composite materials, which is applied in the field of treatment and disposal of food waste, can solve the problems of lack of treatment technology, difficulty in recycling, and large amount of waste, and achieve the effects of avoiding sewage, good application prospects, and easy operation

Inactive Publication Date: 2012-07-04
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the current situation of large amount of kitchen waste in my country, lack of treatment technology, and difficulty in regeneration and recycling, the present invention provides a method for synthesizing loaded nano-composite materials by hydrothermal method of kitchen waste, so as to realize the added value cycle of this type of waste use

Method used

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  • Method for preparing nano iron/carbon compound material by kitchen waste
  • Method for preparing nano iron/carbon compound material by kitchen waste

Examples

Experimental program
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Effect test

Embodiment 1

[0015] A method for preparing iron / carbon nanocomposites from food waste, specifically comprising the following steps:

[0016] according to figure 1 As shown in the process flow, select 40 grams of food waste raw materials from which plastic and bones have been removed, crush them into a paste, add 20 ml of deionized water, stir rapidly for 30 minutes under the condition of heating in a water bath (80°C), and then slowly add 10 ml of nitric acid Iron (0.4 mol / L) solution, continue stirring for 10 minutes. Transfer the mixed solution into a 100ml sealed bomb, raise the temperature to 180°C and keep it warm for 18 hours, stop heating and cool down quickly, transfer the mixed solution, separate it by pressure filtration, return the liquid to the preheating system, and wash the solid product repeatedly with deionized water Three times, after filtering, dry at 80°C for 24 hours, grind to obtain 3.5 grams of iron-carbon composite nanomaterials, carry out electron microscope analys...

Embodiment 2

[0018] A method for preparing iron / carbon nanocomposites from food waste, specifically comprising the following steps:

[0019] according to figure 1 As shown in the process flow, select 80 grams of food waste raw materials from which plastics and bones have been removed, crush them into a paste, add 50 ml of deionized water, stir rapidly at 90°C for 30 minutes under the condition of heating in a water bath, and then slowly add 20 ml of ferric chloride (0.4 mol / L) solution and continued to stir for 10 minutes. Transfer the mixed solution into a 100ml sealed bomb, raise the temperature to 180°C and keep it for 20 hours, stop heating and cool down quickly, transfer the mixed solution, press filter and separate, the liquid returns to the preheating system, and the solid product is washed repeatedly with deionized water Three times, dry at 80°C for 24 hours, grind to obtain 5.60 grams of iron-carbon composite nanomaterials, and carry out electron microscope analysis to the morpho...

Embodiment 3

[0021] A method for preparing iron / carbon nanocomposites from food waste, specifically comprising the following steps:

[0022] according to figure 1 As shown in the process flow, select 80 grams of food waste raw materials from which plastic and bones have been removed, crush them into a paste, add 60 ml of deionized water, and stir rapidly for 35 minutes under the condition of heating in a water bath (90°C), then slowly add 10 ml of sulfuric acid Iron (0.8 mol / L) solution, continue stirring for 15 minutes. Transfer the mixed solution into a 200ml sealed bomb, raise the temperature to 180°C and keep it for 15 hours, stop heating and cool down quickly, transfer the mixed solution, separate it by pressure filtration, return the liquid to the preheating system, and wash the solid product repeatedly with deionized water Three times, dry at 80°C for 24 hours, grind to obtain 6.14 grams of iron-carbon composite nanomaterials, carry out electron microscope analysis to the morpholog...

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Abstract

For the current situations of large waste quantity, shortage of treatment technology and difficult regeneration and recycling, the invention provides a method for preparing a nano iron / carbon compound material by utilizing kitchen waste as a raw material. The method is characterized by comprising the following steps of: carrying out pasting pretreatment on the kitchen waste in a sealed container, adding a catalyst and an auxiliary agent, implementing hydro-thermal treatment under certain conditions, and by hydrolysis, dewatering, decarboxylation, polymerization and aromatization reaction, finally synthesizing iron / carbon complex containing a large amount of nano wires and microsphere structures. According to the method, the operation is simple and convenient, the production cost is low, the stable and reliable effects are achieved, the source of the raw material is wide, the price of the auxiliary raw material is low, the large-scale production is easy, and the economic benefit is obvious. A synthesized product has good catalysis and absorption performances and has a wide industrialized application prospect.

Description

technical field [0001] The invention relates to the treatment and disposal of large amounts of kitchen waste, belongs to the new solid waste treatment technology in the field of environmental protection and resource comprehensive utilization, and is especially suitable for the treatment of organic solid waste and high value-added resource utilization. Background technique [0002] At present, the main treatment methods for the large amount of food waste produced by my country's catering industry and household kitchens are mixed with general domestic waste for incineration, landfill or biotransformation to produce biogas and feed. The incineration method has obvious efficiency in reducing the volume and volume of kitchen waste, but due to the high moisture content and low calorific value of kitchen waste, it is necessary to add auxiliary fuel during combustion and consume a lot of energy; the phenomenon of garbage siege caused by landfill is becoming more and more Outstanding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 张付申吴倩芳
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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