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Process for biochemical denaturation of an asbestos-containing material

一种石棉、酸性溶液的技术，应用在发酵等方向，能够解决变性困难等问题

Active Publication Date: 2017-05-10
LEBSC SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] Additionally, excess biological components, lipids and proteins, interact with the asbestos fibers, surrounding them with a protective biofilm, packing them together and making it more difficult to denature them via ion exchange

Method used

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  • Process for biochemical denaturation of an asbestos-containing material
  • Process for biochemical denaturation of an asbestos-containing material
  • Process for biochemical denaturation of an asbestos-containing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: Liquid / Solid Waste from Vinegar Production

[0066] Residual microbial growth and fermentation of the waste from the vinegar production is carried out by incubating the waste in water and in the presence of woody material from the vine leaves used for wine vinegar production. The temperature for microbial growth and fermentation was 15-25°C and the time range was 24-48 hours. Acids, especially acetic and tartaric acids, are formed during this step. Thus, an acidic solution / suspension is obtained with a pH of 0-6, preferably 2, also depending on the amount of sugar-containing nutrients that can or must be added to the solution to increase the metabolic activity of extreme acidophilus and acidophilus and quality.

[0067] 10 grams of asbestos cement powder was mixed with 100 ml of an acidic solution derived from the fermentation of grape leaves for wine vinegar production at 125°C-170°C and 5-9 bar for 14-20 hours. At the end of the reaction, complete conver...

Embodiment 2

[0076] Example 2: Waste from wine production

[0077] Mixed bacterial and fungal fermentation is carried out by incubation of liquid / solid waste (pomace) in water, preferably at a temperature of 15 to 25° C. for a time ranging from 24 to 48 hours. Acids, especially acetic and tartaric acids, are formed during this step. Thus, an acidic solution / suspension is obtained with a pH of 0-6, preferably 2, also depending on the amount of sugar-containing nutrients that can or must be added to the solution to increase the metabolic activity of extreme acidophilus and acidophilus and quality.

[0078] Mix 10 g of asbestos cement powder with 100 ml of liquid / solid waste derived from solutions used for pomace fermentation, wine and / or gran production and react at 125°C-170°C and 5-9 bar for 14- 20 hours. At the end of the reaction, complete conversion of asbestos and formation of new minerals were observed, such as Figure 4 and Figure 5 shown.

[0079] Figure 4 shows the initial...

Embodiment 3

[0087] Example 3: Processing waste from a tannery

[0088] Residual microorganisms from tannery processing waste are grown and fermented by incubating liquid / solid waste in water. The temperature for microbial growth and fermentation was 15 to 25°C and the time range was 8-24 hours. During this step, acids, especially acetic acid, are formed. Thus, an acidic solution / suspension is obtained with a pH of 0-6, preferably 2, also depending on the amount of sugar-containing nutrients that can or must be added to the solution to increase the metabolic activity of extreme acidophilus and acidophilus and quality.

[0089] 10 g of asbestos cement powder are mixed with 100 ml of an acidic solution obtained from fermentation of water used for scalding tomato skins and allowed to react for 14-20 hours at 125-170° C. and 5-9 bar. At the end of the reaction, complete conversion of asbestos and formation of new minerals were observed, such as Figure 7 and Figure 8 shown.

[0090] F...

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PUM

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Abstract

The invention relates to a process for treating an asbestos-containing material, which enables the asbestos to be transformed into inert products (i.e. not hazardous to human health) that can possibly be reused as raw materials for subsequent industrial processing or as directly marketable industrial products. The process comprising the steps of preparing an acidic solution / suspension by subjecting a food industry waste material to mixed bacterial and fungal growth and / or fermentation, and treating an asbestos- containing material with the acidic solution / suspension obtained from the mixed fermentation at a temperature of 120-170deg c and pressure of 2-10 bar.

Description

technical field [0001] The present invention relates to a method for the treatment of asbestos-containing material which is capable of converting asbestos into an inert product (ie not harmful to human health) which can be used as a raw material for subsequent industrial processing or as a direct sale industrial product. Background technique [0002] Asbestos is the commercial name attributed to several natural minerals that have a fibrous structure and belong to the group of silicates. In modern times, some of these minerals are widely used because of their excellent technical properties: they have good resistance to heat and fire, action against chemical and biological agents and abrasion and abrasion, exhibit high mechanical strength and good flexibility It is easy to bond with building materials, and has good sound absorption and thermal insulation properties. Because of these properties and its low cost, asbestos is widely used in manufactured products and in industria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/54A62D3/36
CPCC12P7/54A62D3/02A62D2101/41A62D2203/02A62D3/36Y02W30/91C12P7/46
Inventor 诺贝托·罗韦里伊西多罗·乔治·莱西桑德拉·彼得拉罗亚弗朗西斯科·德·劳伦蒂斯马可·莱利奥迪拉·梅齐尼朱利亚·蒙泰布尼奥利塞勒涅·梅利伊洛斯·达蒙罗伯托·加莱拉尼
Owner LEBSC SRL
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