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
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[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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