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Biomass composite material as well as preparation method and application thereof

A composite material and biomass technology, applied in the field of bio-environmental material preparation, can solve the problems of single heavy metal passivation method, limited passivation performance, damage to soil structure, etc., and achieve the effect of improving soil physical and chemical properties and reducing effectiveness

Inactive Publication Date: 2019-11-08
RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the heavy metal stabilizer in the prior art only has a single heavy metal passivation method and the passivation performance is limited, and even destroys the soil structure, the present invention provides a heavy metal stabilizer that can be combined with various heavy metals and can improve soil physical and chemical properties. Biomass composite materials for high-efficiency remediation of soil heavy metals, and preparation methods and applications of biomass composite materials

Method used

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  • Biomass composite material as well as preparation method and application thereof
  • Biomass composite material as well as preparation method and application thereof
  • Biomass composite material as well as preparation method and application thereof

Examples

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preparation example Construction

[0030] The embodiment of the present invention provides a kind of preparation method of biomass composite material, see figure 1 ,include:

[0031] S1. Provide animal bone meal and agricultural biomass waste, disperse the animal bone meal and the agricultural biomass waste in water, perform ultrasonic stirring, solid-liquid separation, and dry the obtained solid phase to obtain mixed raw materials.

[0032] The animal bone meal refers to animal waste bones or leftovers from meat product processing that are formed by crushing, mainly animal bones, and the animal bones are bones of common animals, such as: pig bones, beef bones, sheep bones, chicken bones, etc. At least one of bone, duck bone and fish bone. In order to obtain a product with a better adsorption effect, it is preferable to mix the bone powder obtained by pulverizing the bone with agricultural waste.

[0033] The agricultural biomass waste is at least one of bamboo chips, wood chips, straw, bagasse, fruit shells,...

Embodiment 1

[0052] Both the bamboo chips and the pulverized bovine bones were dissolved in water and dispersed, and the mass ratio of the bamboo chips to the bovine bones was controlled to be 1:1 to obtain a suspension. The above suspension was stirred and ultrasonicated, and the ultrasonic time was controlled to be 30 min, the suspension was separated, and then the obtained solid-phase mixed raw material was dried.

[0053] The dried mixed raw materials were subjected to high-temperature pyrolysis under a nitrogen atmosphere. The pyrolysis temperature was controlled at 600°C, and the heating rate was 5°C / min. After reaching the specified 600°C, pyrolysis was continued for 1 hour to obtain pyrolysis products. Wash with water and dry.

[0054] Scanning electron microscopy (SEM) was used to scan the dried pyrolysis product, and the obtained results were as follows: figure 2 and image 3 shown. from figure 2 and image 3 It can be seen that bamboo charcoal and beef bone charcoal are m...

Embodiment 2～ Embodiment 6

[0059] The preparation methods of the biomass composite materials in Examples 2 to 6 are the same as those in Examples, except for the types, amounts and related process parameters of raw materials, which are listed in Table 1.

[0060] The biomass composite material obtained in each example includes the corresponding char generated by the pyrolysis of the raw material.

[0061] The information of the raw material of table 1 embodiment 2~embodiment 6 and relevant process parameter

[0062]

[0063]

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Abstract

The invention discloses a biomass composite material as well as a preparation method and application thereof. The biomass composite material comprises bone black and biomass charcoal which are mixed with each other. The preparation method of the biomass composite material provided by the invention comprises the following steps: providing animal bone powder and agricultural biomass waste, and mixing the animal bone powder and the agricultural biomass waste to obtain a mixed raw material; and performing pyrolysis treatment on the mixed raw material in a protective atmosphere to obtain the biomass composite material. The biomass composite material provided by the invention has various combination manners with heavy metals, and can ameliorate physical and chemical properties of soil, reduce the effectiveness of the heavy metals and efficiently ameliorates the heavy metal contaminated soil; and the preparation method of the biomass composite material provided by the invention is simple andefficient, has wide sources of the raw materials and low costs, and can be well applied to the field of amelioration of the heavy metal contaminated soil.

Description

technical field [0001] The invention relates to the technical field of preparation of biological environment materials, in particular to a biomass composite material, its preparation method and its application. Background technique [0002] With the rapid development of industry and agriculture and the acceleration of urbanization, the phenomenon of soil pollution by heavy metals in some areas of my country is more serious, and this phenomenon is particularly serious in non-ferrous metal mining areas and surrounding areas of smelters. Among the heavy metal pollution, cadmium (Cd), lead (Pb), zinc (Zn), copper (Cu) and arsenic (As) are particularly polluted. Heavy metals in soil are highly toxic, difficult to decompose, easy to spread, and transmitted through the food chain, which significantly increases the incidence of malignant diseases such as cancer and poses a serious threat to people's health and the ecological environment. [0003] In-situ fixed repair technology is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 陈光才胡锐肖江
Owner RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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