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Preparation method of mycete and agricultural and forestry waste mixed bio-adsorbent

A technology of agricultural and forestry waste and biological adsorbent, which is applied in the field of adsorbent preparation, can solve the problems of high cost and secondary pollution, achieve strong heavy metal adsorption capacity, be easy to industrialize, and avoid harsh cultivation conditions

Inactive Publication Date: 2015-07-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high cost and easy to cause secondary pollution of existing adsorbents for treating heavy metals, and to provide a method for preparing biosorbents mixed with mold and agricultural and forestry wastes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Embodiment 1: In this embodiment, a method for preparing a mold and agricultural and forestry waste mixed biosorbent is prepared according to the following steps:

[0009] Dry the agricultural and forestry waste at 58-62°C for 20-26 hours, then crush it and pass it through a 60-300 mesh sieve, then mix it with water at a mass ratio of 1: (0.9-1.1), and then inoculate the mold The spores are then fermented and cultivated at a temperature of 28-32° C. for 2-4 days to obtain a mixed biosorbent of mold and agricultural and forestry waste, which is completed.

[0010] In this embodiment, the mixed biosorbent of mold and agricultural and forestry waste can absorb heavy metal ions from aqueous solution through metabolism, ion exchange or coordination and complexation. This method is more green and environmentally friendly than the previous chemically modified agricultural and forestry waste. It also avoids the expensive culture medium and harsh culture conditions when the fung...

specific Embodiment approach 2

[0011] Embodiment 2: This embodiment is different from Embodiment 1 in that: the agricultural and forestry wastes are rice straw or corn stalks. Others are the same as the first embodiment.

specific Embodiment approach 3

[0012] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mold is Aspergillus niger with strain number 98003. Others are the same as those in Embodiment 1 or 2.

[0013] Among them, the Aspergillus niger with strain number 98003 in this embodiment was purchased from Harbin Chunrui Technology Development Co., Ltd.

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Abstract

The invention provides a preparation method of a mycete and agricultural and forestry waste mixed bio-adsorbent, and relates to a preparation method of an adsorbent. The preparation method aims at solving the problems that in the prior art, the cost of the adsorbent for processing heavy metal is high, and the secondary pollution can be easily caused. The preparation method comprises the following steps that agricultural and forestry wastes are dried, and then are smashed and sieved; then, the sieved agricultural and forestry wastes and water are mixed according to a mass ratio being 1:1; next, mycotic spores are inoculated; then, the fermentation cultivation is carried out; the mycete and agricultural and forestry waste mixed bio-adsorbent is obtained, and the preparation is completed. The preparation method has the advantages that green and environment-friendly effects are achieved, the industrial production is easy, and meanwhile, the adsorbing quantity is great. The preparation method is applied to the field of the adsorbent.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent. Background technique [0002] The traditional methods for the removal of heavy metals include chemical precipitation, redox, ion exchange, electrochemical treatment, filtration, reverse osmosis, solvent extraction, and evaporation recovery. Various physical and chemical methods are only the transfer, concentration, or change of the form of heavy metal ions. Heavy metals will not disappear and the total amount will not decrease. This is what distinguishes heavy metal wastewater from other wastewater. In the early years, the ion exchange method was widely used, but due to the high cost of the resin, there are certain restrictions on the original water quality, such as organic matter and oxides in the wastewater will cause the resin to fail, so the chemical method followed. , electrolysis, etc. have gradually appeared and been applied. The disadvantage of the chemical method is that it occupi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
Inventor 崔崇威王婧瑶任滨侨张晓晨
Owner HARBIN INST OF TECH
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