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Table 4

Influence of addition amount of sodium hydroxide

No.Theoretical value of /gRatio of actual value to theoretical value of Content of nitrogen after reaction/%Quality of remaining liquid after reaction/gRemoval rate of nitrogen/%
– – 2.49 300.00 – 
21.36 0.60 2.07 317.60 11.99 
21.36 0.70 1.97 315.80 16.72 
21.36 0.80 1.90 312.50 20.52 
21.36 0.90 1.82 313.00 23.74 
21.36 1.00 0.986 339.40 55.20 
21.36 1.10 0.993 319.20 57.57 
21.36 1.20 0.991 323.00 57.15 
No.Theoretical value of /gRatio of actual value to theoretical value of Content of nitrogen after reaction/%Quality of remaining liquid after reaction/gRemoval rate of nitrogen/%
– – 2.49 300.00 – 
21.36 0.60 2.07 317.60 11.99 
21.36 0.70 1.97 315.80 16.72 
21.36 0.80 1.90 312.50 20.52 
21.36 0.90 1.82 313.00 23.74 
21.36 1.00 0.986 339.40 55.20 
21.36 1.10 0.993 319.20 57.57 
21.36 1.20 0.991 323.00 57.15 
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