char = I;code = 73
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char = f;code = 102
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char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = e;code = 101
char = r;code = 114
char = y;code = 121
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
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char = c;code = 99
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char = n;code = 110
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char = o;code = 111
char = n;code = 110
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char = a;code = 97
char = n;code = 110
char = a;code = 97
char = e;code = 101
char = r;code = 114
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = m;code = 109
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = .;code = 46
result sql = Influence of the antibiotic erythromycin on anaerobic treatment of a pharmaceutical wastewater.
Influence of the antibiotic erythromycin on anaerobic treatment of a pharmaceutical wastewater.
char = A;code = 65
char = ;code = 32
char = l;code = 108
char = a;code = 97
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char = o;code = 111
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char = a;code = 97
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = y;code = 121
char = -;code = 45
char = s;code = 115
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = a;code = 97
char = e;code = 101
char = r;code = 114
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = b;code = 98
char = a;code = 97
char = t;code = 116
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
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char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
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char = m;code = 109
char = i;code = 105
char = x;code = 120
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = m;code = 109
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = g;code = 103
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 2;code = 50
char = .;code = 46
char = 9;code = 57
char = ;code = 32
char = g;code = 103
char = ;code = 32
char = C;code = 67
char = O;code = 79
char = D;code = 68
char = /;code = 47
char = (;code = 40
char = L;code = 76
char = ;code = 32
char = d;code = 100
char = );code = 41
char = .;code = 46
char = ;code = 32
char = A;code = 65
char = f;code = 102
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = c;code = 99
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = r;code = 114
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
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char = o;code = 111
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = (;code = 40
char = 1;code = 49
char = ;code = 32
char = m;code = 109
char = g;code = 103
char = /;code = 47
char = L;code = 76
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = e;code = 101
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = l;code = 108
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = ;code = 32
char = (;code = 40
char = 2;code = 50
char = 0;code = 48
char = 0;code = 48
char = ;code = 32
char = m;code = 109
char = g;code = 103
char = /;code = 47
char = L;code = 76
char = );code = 41
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = c;code = 99
char = e;code = 101
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char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = e;code = 101
char = r;code = 114
char = y;code = 121
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = y;code = 121
char = c;code = 99
char = i;code = 105
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = d;code = 100
char = d;code = 100
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = e;code = 101
char = r;code = 114
char = y;code = 121
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = y;code = 121
char = c;code = 99
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = n;code = 110
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = b;code = 98
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = l;code = 108
char = i;code = 105
char = m;code = 109
char = i;code = 105
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = r;code = 114
char = e;code = 101
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char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = g;code = 103
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = r;code = 114
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char = d;code = 100
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char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = 5;code = 53
char = %;code = 37
char = ;code = 32
char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = e;code = 101
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char = l;code = 108
char = e;code = 101
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char = e;code = 101
char = l;code = 108
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char = o;code = 111
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char = ;code = 32
char = e;code = 101
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char = r;code = 114
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char = d;code = 100
char = i;code = 105
char = d;code = 100
char = ;code = 32
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char = i;code = 105
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char = g;code = 103
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char = o;code = 111
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char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = m;code = 109
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char = i;code = 105
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char = h;code = 104
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char = A;code = 65
char = S;code = 83
char = B;code = 66
char = R;code = 82
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char = w;code = 119
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char = r;code = 114
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char = u;code = 117
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char = l;code = 108
char = e;code = 101
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char = C;code = 67
char = O;code = 79
char = D;code = 68
char = ;code = 32
char = c;code = 99
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char = f;code = 102
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char = m;code = 109
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char = t;code = 116
char = y;code = 121
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result sql = A laboratory-scale anaerobic sequencing batch reactor was used to treat a model substrate mixture representing pharmaceutical wastewater at an organic loading rate of 2.9 g COD/(L d). After reaching stable operation the reactor was first exposed to low (1 mg/L) and, subsequently, to high (200 mg/L) concentrations of the antibiotic erythromycin. The addition of low levels of erythromycin resulted in a significant but limited reduction of biogas production by 5% and the higher level of erythromycin did not impact biogas production further, suggesting that a substantial fraction of the microbial populations in the ASBR were resistant to the antibiotic. Effluent soluble COD could not be accounted for in measured volatile fatty acids, perhaps suggesting the production of soluble microbial products. In batch tests evaluating the specific methanogenic activity, conversion of the model substrate mixture was only slightly affected by the presence of erythromycin. However, the conversion of butyric acid was inhibited when erythromycin was present. After 47 days of exposure to erythromycin, the conversion of butyric acid was inhibited to a lesser extent, suggesting the development of antibiotic resistance in the biomass. Exposure to antibiotics can affect specific substrate degradation pathways, leading to the accumulation of volatile fatty acids, soluble microbial products, and potentially to overall system instabilities.

Publication: Environ. Sci. Technol. 2006 Jun 15 ;40(12)::3971-7.
Publication Date: 2006 Jun 15
Study Author(s): Amin, Mohammad M;Zilles, Julie L;Greiner, James;Charbonneau, Stephen;Raskin, Lutgarde;Morgenroth, Eberhard;
Institution: Department of Civil and Environment Engineering and Department of Animal Sciences, University of Illinois at Urbana-Champaign, 205 North Mathews, Illinois 61801, USA.
Shortcut link to this study:
A laboratory-scale anaerobic sequencing batch reactor was used to treat a model substrate mixture representing pharmaceutical wastewater at an organic loading rate of 2.9 g COD/(L d). After reaching stable operation the reactor was first exposed to low (1 mg/L) and, subsequently, to high (200 mg/L) concentrations of the antibiotic erythromycin. The addition of low levels of erythromycin resulted in a significant but limited reduction of biogas production by 5% and the higher level of erythromycin did not impact biogas production further, suggesting that a substantial fraction of the microbial populations in the ASBR were resistant to the antibiotic. Effluent soluble COD could not be accounted for in measured volatile fatty acids, perhaps suggesting the production of soluble microbial products. In batch tests evaluating the specific methanogenic activity, conversion of the model substrate mixture was only slightly affected by the presence of erythromycin. However, the conversion of butyric acid was inhibited when erythromycin was present. After 47 days of exposure to erythromycin, the conversion of butyric acid was inhibited to a lesser extent, suggesting the development of antibiotic resistance in the biomass. Exposure to antibiotics can affect specific substrate degradation pathways, leading to the accumulation of volatile fatty acids, soluble microbial products, and potentially to overall system instabilities.
PMID: 16830570

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