Environmental Engineering Reference
In-Depth Information
1000
200
soil A
Mg
Ca
soil B
150
750
Mg
Ca
100
500
50
250
0
0
2
5
10
15
24
37
50
2
5
10
15
24
37
50
citric a cid rea ction time (h)
citric a cid rea ction time (h)
1000
200
Mg
Ca
soil A
soil B
750
150
Mg
Ca
500
100
250
50
0
0
2
5
10
15
24
37
50
2
5
10
15
37
50
oxa lic a cid rea ction time (h)
oxa lic a cid rea ction time (h)
1000
200
Mg
Ca
soil A
soil B
750
150
Mg
Ca
500
100
250
50
0
0
2
5
10
15
37
50
2
5
10
15
24
37
50
ma lic a cid rea ction time (h)
ma lic a cid rea ction time (h)
200
1000
Mg
Ca
soil A
soil B
150
750
Mg
Ca
100
500
50
250
0
0
2
5
10
15
24
37
50
2
5
10
15
37
50
a cetic a cid rea ction time (h)
a cetic a cid rea ction time (h)
Figure 5. The effect of time-dependence of four organic acids on cations releases in the alkaline and
acid soils. Symbols represent mean ± SEM.
