Mould biosorbent and preparation method thereof

A biosorbent and mold technology, applied in the field of environmental pollution control, can solve the problems of restricting the industrial application of biosorbent, high production cost of biosorbent, complicated preparation process, etc., and achieves easy solid-liquid separation and good adsorption and removal effect. , the effect of simple preparation process

Inactive Publication Date: 2010-08-11
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high production cost, complex preparation process and difficult solid-liquid separation of biosorbents limit the industrial application of biosorbents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 30mL tofu yellow water and 70mL tap water to a 250mL Erlenmeyer flask, adjust the pH to 3.5-6.5, inoculate the Aspergillus niger spore suspension at a 5% inoculum amount under sterilized or non-sterilized conditions, and inoculate the Aspergillus niger spore suspension at 28-35°C and 150°C. Shake culture at -200rpm for 60-72h to form milky white fungal mycelium balls with a diameter of about 2mm. Filtrate and wash to collect mycelium balls to obtain mold biosorbent, and its yield can reach more than 2g / L (dry weight of mycelium). The medium COD removal rate can reach more than 85%.

Embodiment 2

[0017] Add 5mL bean curd yellow water, 25mL monosodium glutamate waste water and 70mL tap water in a 250mL Erlenmeyer flask, adjust pH3.5-6.5, inoculate the Aspergillus niger spore suspension by 5% inoculum amount under sterilized or non-sterilized conditions, in 28- Shake culture at 35°C at a speed of 150-200rpm for 60-72h to form milky white fungal mycelium balls with a diameter of about 2mm. The mycelia balls are collected by filtration and washing to obtain the mold biosorbent, and the yield can reach more than 2.5 g / L (mycelium dry weight). The medium COD removal rate can reach more than 90%.

Embodiment 3

[0019] Add 25mL monosodium glutamate waste water and 75mL tap water in 250mL Erlenmeyer flask, adjust pH3.5-6.5, inoculate Aspergillus niger spore suspension by 5% inoculum amount under the condition of sterilization or non-sterilization, in 28-35 ℃, 150- Shake culture at a speed of 200rpm for 60-72h to form milky white fungal mycelium balls with a diameter of about 2mm. The mycelia balls are collected by filtration and washing to obtain the mold biosorbent, and the yield can reach more than 2g / L (mycelium dry weight). The medium COD removal rate can reach more than 85%.

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Abstract

The invention relates to a mould biosorbent and a preparation method thereof, belonging to the field of environment governance. The biosorbent is mycelial pellets formed by winding mould mycelia, wherein the diameter thereof is about 2.0mm, and the mycelial pellets have uniform size and certain mechanical strength. The preparation method comprises the following steps: taking food production waste water as a culture medium, inoculating a mould spore suspension under the sterilized or non-sterilized condition of pH 3.5-6.5, shaking culturing for 60-72h at 28-35 DEG C and at the speed of 150-200rpm, and filtering the collected mycelial pellets to obtain the mould biosorbent. The mould biosorbent prepared in the invention has low cost and simple preparation process, has good adsorbing and decoloring effects on reactive dyes, reducible dyes, disperse dyes, direct dyes, sulfur dyes and the like, can also be used for removing metal ions in the waste water, and has the characteristics of economy, high efficiency, easy solid-liquid separation, no secondary pollution, capability of recovering the metal ions, environment friendliness and the like.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a mold biosorbent and a preparation method thereof. Background technique [0002] The application of biosorbents to remove dyes, heavy metals and recover precious metals from wastewater has the advantages of low cost, high efficiency, simplicity, and good selectivity, especially for the treatment of low-concentration dye wastewater and heavy metal wastewater that cannot be treated by traditional methods. However, the high production cost, complex preparation process, and difficult solid-liquid separation of biosorbents limit the industrial application of biosorbents. Food production wastewater contains rich carbon and nitrogen sources, which can provide nutrients for mold growth. Using it as a medium to produce mold biosorbents can not only obtain a large number of mycelium balls formed by mold mycelium, but also reduce the Low production cost, easy solid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24C02F1/28C02F1/62C12N1/14C12R1/66C12R1/80
Inventor 刘桂萍刘长风刘学贵
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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