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Tabel 3.1
1.-ordens nedbrydningskonstanter k1 (dag –1) for BTEX’er i grundvandsmagasiner.

 

Naturlig nedbrydning af miljøfremmede stoffer i jord og grundvand
Forureningskomponent k1 (dag –1) Bestem-melses-metode Redoxforhold Tempe-ratur (° C) Reference
Benzen          
Vejen 0,07-0,2 Lab. Aerobt 10 Nielsen et al., 1995
Vejen 0,2-0,5 Felt inj.      
Columbus 0,007 Felt inj. Aerobt 18 MacIntyre et al. (1993)
Sampson County 0,0006-0,0014 Felt obs. Aerobt/deni-trificerende 14 Borden et al., 1997b
Rocky point 0,0002 Felt obs. Anaerobt 19 Borden et al., 1997a
Fairfax 0,00055 Felt obs. Anaerobt ? Buschek et al., 1993
San Francisco 0,0028 Felt obs. Anaerobt ? Buschek et al., 1993
Alameda 0,002 Felt obs. Anaerobt ? Buschek et al., 1993
Elko county 0,001 Felt obs Anaerobt ? Buschek et al., 1993
Traverse city 0,001 Felt obs. Anaerobt 10-14 *Wilson et al., 1990
Hill 0,028-0,038 Felt obs. Anaerobt 13-25 Wiedemeier et al. 1996
Rocky Point 0,024 Lab. Jern-sulfatredu-cerende 16 Borden et al., 1997a
Toluen          
Vejen 0,09-0,2 Lab. Aerobt 10 Nielsen et al., 1995
Vejen 0,1-0,4 Felt inj.      
Sampson County 0,0005-0,0063 Felt obs. Aerobt/deni-trificerende 14 Borden et al., 1997b
Rocky point 0,0021 Felt obs. Anaerobt 19 Borden et al., 1997a
Fairfax 0,00045 Felt obs. Anaerobt ? Buschek et al., 1993
San Francisco 0,0022 Felt obs. Anaerobt ? Buschek et al., 1993
Alameda 0,0017 Felt obs. Anaerobt ? Buschek et al., 1993
Sleeping bear 0,02-0,07 Felt obs. Anaerobt 16 *Wilson et al., 1994b
Eglin 0,05-0,13 Felt obs. Anaerobt ? *Wilson et al., 1994a
Traverse city 0,2 Felt obs. Anaerobt 10-14 *Wilson et al., 1990
Hill 0,023-0,031 Felt obs. Anaerobt 13-25 Wiedemeier et al., 1996
Traverse city 0,02-0,16 Lab. Denitrificerende 12 Hutchins et al., 1991
Grindsted 0,028 Felt inj. Jernreducerende 10 Rügge et al., 1995
Rocky point 0,045 Lab. Jern-sulfatredu-cerende 16 Borden et al. 1997a
Perth 2,3 Lab.      
Perth 0,007 Felt inj. Sulfatredu-cerende 21 Thierrin et al., 1993
Perth 0,006 Felt obs.      
Sleeping bear 0,023-0,042 Lab. Methanogent 16 Borden et al. 1997a
Ethylbenzen          
Sampson County 0,0008-0,0058 Felt obs. Aerobt/deni-trificerende 14 Borden et al., 1997b
Fairfax 0,00045 Felt obs. Anaerobt ? Buschek et al., 1993
San Francisco 0,0033 Felt obs. Anaerobt ? Buschek et al., 1993
Alameda 0,002 Felt obs. Anaerobt ? Buschek et al., 1993
Sleeping bear 0,03-0,011 Felt obs. Anaerobt 16 *Wilson et al., 1994b
Eglin 0,03-0,05 Felt obs. Anaerobt ? *Wilson et al., 1994a
Hill 0,009-0,024 Felt obs. Anaerobt 13-25 Wiedemeier et al., 1996
Traverse city 0,017-0,065 Lab. Denitrificerende 12 Hutchins et al., 1991
Perth 0,003 Felt obs. Sulfatredu-cerende 21 Thierrin et al., 1993
o-Xylen          
Vejen 0,02-0,03 Lab. Aerobt 10 Nielsen et al., 1995
Vejen 0,04-0,1 Felt inj.      
Sampson County 0,0007-0,0017 Felt obs. Aerobt/deni-trificerende 14 Borden et al., 1997b
Rocky Point 0,021 Felt obs. Anaerobt 16 Borden et al., 1997a
Fairfax 0,0004 Felt obs. Anaerobt ? Buschek et al., 1993
San Francisco 0,0023 Felt obs. Anaerobt ? Buschek et al., 1993
Alameda 0,0017 Felt obs. Anaerobt ? Buschek et al., 1993
Traverse city 0,004 Felt obs. Anaerobt 10-14 *Wilson et al., 1990
Sleeping bear 0,004-0,011 Felt obs. Anaerobt 16 *Wilson et al., 1994b
Eglin 0,21 Felt obs. Anaerobt ? *Wilson et al., 1994a
Hill 0,006-0,027 Felt obs. Anaerobt 13-25 Wiedemeier et al., 1996
Traverse city 0,016-0,023 Lab. Denitrificerende 12 Hutchins et al., 1991
Grindsted 0,0014 Felt inj. Jernreducerende 10 Rügge et al., 1997
Perth 0,006 Felt obs. Sulfatredu-cerende 21 Thierrin et al., 1993
m/p-Xylen          
Columbus 0,0107 Felt inj. Aerobt 18 MacIntyre et al. (1993)
Sampson County 0,0012-0,0035 Felt obs. Aerobt/deni-trificerende 14 Borden et al., 1997b
Rocky Point 0,013 Felt obs. Anaerobt 16 Borden et al., 1997a
Fairfax 0,0004 Felt obs. Anaerobt ? Buschek et al., 1993
San Francisco 0,0023 Felt obs. Anaerobt ? Buschek et al., 1993
Alameda 0,0017 Felt obs. Anaerobt ? Buschek et al., 1993
Traverse city 0,004 Felt obs. Anaerobt 10-14 *Wilson et al., 1990
Sleeping bear 0,002-0,014 Felt obs. Anaerobt 16 *Wilson et al., 1994b
Eglin 0,02-0,1 Felt obs. Anaerobt ? *Wilson et al., 1994a
Hill 0,006-0,027 Felt obs. Anaerobt 13-25 Wiedemeier et al., 1996
Traverse city 0,00043-0,381 Lab. Denitrificerende 12 Hutchins et al., 1991
Rocky point 0,020 Lab. Jern-sulfatredu-cerende 16 Borden et al., 1997a
Perth 0,003 Felt inj. Sulfatredu- 21 Thierrin et al., 1993
Perth 0,004 Felt obs. cerende    

*: Ifølge Rifai et al., 1995.