Method for preparing slow-release soil heavy metal passivator by using pig bones

A heavy metal passivator, slow-release technology, applied in chemical instruments and methods, soil conditioning materials, applications, etc., can solve the problems of poor slow-release effect, single passivation mechanism, poor passivation effect, etc., to achieve The effect of enhancing the effect

Inactive Publication Date: 2019-07-23
褚文慧
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AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is that the slow-release effect of the existing soil passivation agent is not good, and the adsorption and fixation of heavy metals will reach saturation in a very short period of time, the passivation mechanism is single, and the passivation effect is not good. A method for preparing slow-release soil heavy metal passivator using pig bone is provided

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0028] Weigh fresh pork bones and put them into a pulverizer for 20 to 30 minutes to crush them to obtain crushed pork bones. Put the crushed pig bones into a rubber steamer, open the steam valve, and feed hot water preheated to 150 to 180°C into the pot. steam until the pressure in the steamer reaches 1.2-1.5MPa, and steam the glue for 1-2 hours; The steamed rubber product is completely submerged, heat-preserved for 3-4 hours, and after the heat treatment is completed, filter and separate to obtain the filtrate and filter residue respectively, and the filter residue is used for later use; put the obtained filtrate into a rotary evaporator, and concentrate it by rotary evaporation at 60-70°C for 30 ~40min to get the concentrated solution, mix the obtained concentrated solution and mussel mucin according to the mass ratio of 1:1, put it into the mixer, and stir it at a speed of 200~300r / min for 20~30min to get the mixture; pack the mixture into the reaction kettle, then add cat...

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PUM

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Abstract

The invention relates to a method for preparing a slow-release soil heavy metal passivator by using pig bones, and belongs to the technical field of preparation of soil remediation agents. The methodcomprises the steps that the pig bones serve as raw materials and put into a glue steaming pot after being smashed, the bone collagen contained in the bone material can be deintegrated under the effect of thermal energy and pressure of high temperature steam, colloid exudes from the bone cell wall gradually, bone glue and pig bone residue are obtained through hot water dipping and extraction, theextracted pig bone glue is mixed and reacts with mussel adhesive proteins to prepare a slow-release adhesive under the effect of bio-enzymes, finally the pig bone residue is mixed and pelletized withthe self-prepared slow-release adhesive after being ground, and the slow-release soil heavy metal passivator is obtained. The prepared slow-release soil heavy metal passivator is good in passivation effect, long in effective acting time, excellent in slow release effect, and wide in application prospect.

Description

technical field [0001] The invention relates to a method for preparing a slow-release soil heavy metal passivator by using pig bones, and belongs to the technical field of preparation of soil remediation agents. Background technique [0002] With the development of industrial and agricultural production, the problem of agricultural environmental pollution, especially soil heavy metal pollution, has become more and more prominent. The quality of soil environment is directly related to the safety of agricultural products. The quality and safety of agricultural products and mass incidents caused by soil pollution are increasing year by year, becoming an important factor affecting the health of the masses and social stability. A large area of ​​farmland soil in my country is polluted by heavy metals, and it is difficult to solve the problem with a single remediation technology. It is urgent to develop a method of heavy metal treatment in farmland soil that can be popularized an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 褚文慧
Owner 褚文慧
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