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Waste biomass resource utilization and harmless treatment method

A technology of harmless treatment and waste biomass, applied in chemical instruments and methods, biofuels, solid waste removal, etc., can solve the problems of metal cyanide pollution, etc. Effect

Inactive Publication Date: 2020-05-19
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current biochar technology does not include metal cyanide as an environmental risk factor. Therefore, it is of great environmental significance to solve the problem of metal cyanide pollution in the process of biochar technology

Method used

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  • Waste biomass resource utilization and harmless treatment method
  • Waste biomass resource utilization and harmless treatment method
  • Waste biomass resource utilization and harmless treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Wheat protein, K 2 CO 3 and FeCl 3 According to a certain mass ratio, wheat protein and K 2 CO 3 The mass ratio of wheat protein to FeCl is 1:10 3 The mass ratio of the mixture is 1:500, mixed with water, and shaken for 12 hours; the mixture is dried and placed in a porcelain boat, placed in a tube furnace, and the flow rate is 0.1 L / min in N 2 Under the atmosphere, the temperature was raised to 800 °C at a rate of 5 °C / min, and maintained for 1 hour, and cooled to room temperature after the reaction was completed. Put the obtained biochar in a glass tube, add an appropriate amount of NaOH solution for extraction, filter and dilute to an appropriate concentration, and use ion chromatography to determine CN - content. low concentration of FeCl 3 It can effectively control the content of metal cyanide in biochar.

Embodiment 2

[0025] Wheat protein, K 2 CO 3 and FeCl 3 According to a certain mass ratio, wheat protein and K 2 CO 3 The mass ratio of wheat protein to FeCl is 1:10 3 The mass ratio is 1:50 and 1:5, mixed with water, shaken for 12 hours; the mixture is dried and placed in a porcelain boat, placed in a tube furnace, under the flow rate of 0.1 L / min N 2 Under the atmosphere, the temperature was raised to 800 °C at a rate of 5 °C / min, and maintained for 1 hour, and cooled to room temperature after the reaction was completed. Put the obtained biochar in a glass tube, add an appropriate amount of NaOH solution for extraction, filter and dilute to an appropriate concentration, and use ion chromatography to determine CN - content. High concentration of FeCl 3 It can effectively and completely inhibit the formation of metal cyanide in biochar.

Embodiment 3

[0027] Wheat protein, K 2 CO 3 and MgCl 2 According to a certain mass ratio, wheat protein and K 2 CO 3 The mass ratio of wheat protein to MgCl is 1:10 2 The mass ratio of the mixture is 1:50, mixed with water, and shaken for 12 hours; the mixture is dried and placed in a porcelain boat, placed in a tube furnace, and the flow rate is 0.1 L / min in N 2 Under the atmosphere, the temperature was raised to 800 °C at a rate of 5 °C / min, and maintained for 1 hour, and cooled to room temperature after the reaction was completed. Put the obtained biochar in a glass tube, add an appropriate amount of NaOH solution for extraction, filter and dilute to an appropriate concentration, and use ion chromatography to determine CN - content. MgCl 2 It can effectively inhibit the formation of metal cyanide in biochar.

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Abstract

The invention belongs to the technical field of environmental protection, and particularly relates to a waste biomass resource utilization and harmless treatment method. The biomass comprises kitchenwaste, edible fungus residues, algae, crop straw, rice hulls, bean dregs, rape seed cakes, biogas residues, sludge and livestock and poultry manure; a metal salt is used as an inhibitor, biomass richin nitrogen and oxygen-containing alkali metal salts at the same time is pyrolyzed through a one-pot method, and an environment-friendly biochar material is obtained. In the reaction process, a high-valence metal salt is interacted with the unstable oxygen-containing alkali metal salts in the biomass to inhibit the generation of metal cyanides. The harmless treatment method can solve the problem of highly toxic metal cyanide in the biochar, has the advantages of simple technique, accessible inhibitor and wide sources, is green and environment-friendly, plays an important role in promoting thedevelopment of biomass energy, and can achieve huge economic, social and ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to resource utilization and harmless treatment methods of waste biomass. Background technique [0002] Biomass energy is considered as a green resource that can simultaneously solve the two major problems of environmental pollution and energy shortage. With the growth of population and social development, as well as the enhancement of people's awareness of environmental protection, more and more waste biomass such as kitchen waste, edible fungus residue, straw, bean dregs, sludge and biogas residue, etc., need to be passed through Biochar technology for processing, so as to realize the resource utilization of waste. In this process, due to the variety of biomass raw materials and complex components, the derived biochar is often accompanied by the generation of various pollutants, such as heavy metals and metalloids (Fe, Cd, Pb, As, etc.), poly Aromatic...

Claims

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Application Information

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IPC IPC(8): C10B53/00C10B53/02B09B3/00
CPCC10B53/00C10B53/02B09B3/40Y02E50/10
Inventor 朱向东张士成罗洁文
Owner FUDAN UNIV
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