optimization of calcite precipitation as a soil ...

      

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       

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                                                                             

                                                                                         –                                                                                                         –                    

                  

                                                         

                                            –      

  





 

 



  



 

                          –                                                                                      



100

100

80

80

60

60

40

40 0.5 [mol/L] 1.0 [mol/L] 1.5 [mol/L]

20

0

0

1

2

3

4

Urease concentration [g/L]

5

0.5 [mol/L] 1.0 [mol/L] 1.5 [mol/L]

20

6

0

0

1

2

3

4

5

6

7

8

Time [day]

                                                                                                             

                                                        –                                                                           

                                                                                          

 

 

       

     –                       

     

                

    

1 time

    

2 times

3 times

4

3

2

1

0

0

4

8

12

16

20

Distance from the top [cm]   

1 time

2 times

3 times

0.43

Initial porosity 0.42

0.41

0.40

0.39

0

4

8

12

16

20

Distance from the top [cm]           –            

80

60

40

20

0

0

1

2

3

4

Calcite precipitated [%]   

                                                     –                      

     

                                                   0.06 Experiment Yasuhara et al (2012) 0.04

0.02

0.00

0

1

2

3

4

Injection number     

                                                                                

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