Modified cellulose passivator and preparation method and application thereof
A technology of cellulose and passivation agent, applied in chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of poor passivation effect stability, low passivation efficiency, secondary pollution, etc., and achieve long passivation duration. , Improve the bonding strength, the effect of good stability
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Embodiment 1
[0057] After the sawdust was air-dried and dried, it was crushed by a crusher until the particle size was 20 mesh to obtain cellulose powder; 100 g of cellulose powder was placed in a ball mill jar, and 50 mL of Ce(NO 3 ) 3 solution, 50mL of KMnO with a concentration of 1.3mol / L 4 Solution, ball milling reaction at a rotating speed of 35r / min, the reaction time is 1h; then add 40mL NaOH solution with a solution of 10mol / L, and ball milling reaction at a rotating speed of 20r / min, the reaction time is 0.5h; mix the reacted materials Separation from ball milling beads, filtration, drying with hot air at 100°C for 16 hours, and cooling to room temperature to obtain the modified cellulose deactivator product.
[0058] Take the heavy metal arsenic and cadmium compound polluted soil in Zhadian Town, Gejiu City, Yunnan Province, air-dry and grind through a 10-mesh nylon sieve to measure the effective content of heavy metal As and Cd, weigh 1000g of soil, and add 5g of modified cellu...
Embodiment 2
[0060] After the sawdust was air-dried and dried, it was crushed by a crusher until the particle size was 40 mesh to obtain cellulose powder; 100 g of cellulose powder was placed in a ball mill jar, and 50 mL of Ce(NO 3 ) 3 solution, 50mL of KMnO with a concentration of 1.3mol / L 4 Solution, ball milling reaction at a speed of 35r / min, the reaction time is 1.5h; then add 40mL NaOH solution with a solution of 10mol / L, ball milling reaction at a speed of 25r / min, the reaction time is 1h; mix the reacted materials Separation from ball milling beads, filtration, drying with hot air at 100°C for 16 hours, and cooling to room temperature to obtain the modified cellulose deactivator product.
[0061] Take the heavy metal arsenic and cadmium compound polluted soil in Zhadian Town, Gejiu City, Yunnan Province, air-dry and grind through a 10-mesh nylon sieve to measure the effective content of heavy metal As and Cd, weigh 1000g of soil, and add 5g of modified cellulose passivation agent...
Embodiment 3
[0063] After the bagasse was air-dried and dried, it was cyclically crushed by a crusher to a particle size of 40 mesh to obtain cellulose powder; 100 g of cellulose powder was placed in a ball mill jar, and 50 mL of Ce(NO 3 ) 3 solution, 50mL of KMnO with a concentration of 1.6mol / L 4 The solution was ball milled at a speed of 45r / min, and the reaction time was 1.5h; 40mL of NaOH solution with a solution of 15mol / L was added, and the reaction was ball milled at a speed of 20r / min, and the reaction time was 0.5h; The material was separated from the ball milling beads, filtered, dried with hot air at 100°C for 16 hours, and cooled to room temperature to obtain the modified cellulose passivator product.
[0064] Take the heavy metal arsenic and cadmium compound polluted soil in Zhadian Town, Gejiu City, Yunnan Province, air-dry and grind through a 10-mesh nylon sieve to measure the effective content of heavy metal As and Cd, weigh 1000g of soil, and add 5g of modified cellulose...
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