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char = f;code = 102
char = e;code = 101
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char = D;code = 68
char = /;code = 47
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char = t;code = 116
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char = n;code = 110
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char = c;code = 99
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char = s;code = 115
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char = m;code = 109
char = u;code = 117
char = l;code = 108
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char = n;code = 110
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char = ;code = 32
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char = e;code = 101
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char = i;code = 105
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
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char = t;code = 116
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = g;code = 103
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char = h;code = 104
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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 = 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 = 46
result sql = Effect of carbon source and COD/NO₃⁻-N ratio on anaerobic simultaneous denitrification and methanogenesis for high-strength wastewater treatment.
Effect of carbon source and COD/NO₃⁻-N ratio on anaerobic simultaneous denitrification and methanogenesis for high-strength wastewater treatment.
char = T;code = 84
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char = c;code = 99
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = b;code = 98
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char = s;code = 115
char = o;code = 111
char = u;code = 117
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char = e;code = 101
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char = d;code = 100
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char = C;code = 67
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char = D;code = 68
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char = O;code = 79
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char = 3;code = 51
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char = (;code = 40
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char = );code = 41
char = -;code = 45
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char = ;code = 32
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char = t;code = 116
char = i;code = 105
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char = o;code = 111
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char = f;code = 102
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char = s;code = 115
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char = h;code = 104
char = i;code = 105
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char = ;code = 32
char = s;code = 115
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char = d;code = 100
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char = a;code = 97
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char = s;code = 115
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char = l;code = 108
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char = e;code = 101
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char = (;code = 40
char = C;code = 67
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char = g;code = 103
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char = s;code = 115
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char = (;code = 40
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result sql = The effect of carbon source and COD/NO(3)(-)-N ratio on denitrification and methanogenesis in mixed methanogenic matrix was investigated in this study. Industrial wastewater, anaerobic treated cassava stillage (CS) and glucose synthetic wastewater were used as carbon sources respectively for comparison. Experimental results showed that denitrification was the main nitrate reduction pathway for all COD/NO(3)(-)-N ratios tested in two substrates. Simultaneous denitrification and methanogenesis occurred at COD/NO(3)(-)-N higher than 7 regardless of carbon sources. Incomplete denitrification was observed at COD/NO(3)(-)-N ratio below 7 in both the anaerobic effluent of CS and glucose-fed cultures due to the insufficient available organic carbon. The nature of carbon sources was observed to play a key role in the nitrate and organic carbon utilization rates. COD/NO(3)(-)-N ratio had a strong effect on the organic matter utilization pathways. Methanization consumed more organic matter than denitrification with further increase of COD/NO(3)(-)-N ratio above 7 in two substrates. Results of VFA variation suggested that propionate and butyrate were preferably utilized by the denitrifiers than acetate.

Publication: J. Biosci. Bioeng. 2012 Jun ;113(6)::759-64. :doi: 10.1016/j.jbiosc.2012.01.007.
Publication Date: 2012 Jun
Study Author(s): Xie, Li;Chen, Jinrong;Wang, Rui;Zhou, Qi;
Institution: State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Siping Road no. 1239, Shanghai 200092, PR China. [email protected]
Shortcut link to this study:
The effect of carbon source and COD/NO(3)(-)-N ratio on denitrification and methanogenesis in mixed methanogenic matrix was investigated in this study. Industrial wastewater, anaerobic treated cassava stillage (CS) and glucose synthetic wastewater were used as carbon sources respectively for comparison. Experimental results showed that denitrification was the main nitrate reduction pathway for all COD/NO(3)(-)-N ratios tested in two substrates. Simultaneous denitrification and methanogenesis occurred at COD/NO(3)(-)-N higher than 7 regardless of carbon sources. Incomplete denitrification was observed at COD/NO(3)(-)-N ratio below 7 in both the anaerobic effluent of CS and glucose-fed cultures due to the insufficient available organic carbon. The nature of carbon sources was observed to play a key role in the nitrate and organic carbon utilization rates. COD/NO(3)(-)-N ratio had a strong effect on the organic matter utilization pathways. Methanization consumed more organic matter than denitrification with further increase of COD/NO(3)(-)-N ratio above 7 in two substrates. Results of VFA variation suggested that propionate and butyrate were preferably utilized by the denitrifiers than acetate.
PMID: 22293676

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