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Table 2

Nitrogen, sulfur, and other compounds' concentrations of anaerobic digestate before and after desulfurization-nitrification treatment

ElementsInfluentEffluent
TAN-N (mg L−1856 ± 12 n.d. 
NO2-N (mg L−1n.d. n.d. 
NO3-N (mg L−1n.d. 847 ± 54 
S2−-S (mg L−1384a n.d. 
S2O32−-S (mg L−1n.d. n.d. 
SO42−-S (mg L−125 ± 1 183 ± 34b 
PO43−-P (mg L−1119 ± 11 58 ± 38b 
DOC (mg L−163 ± 1 81 ± 1d 
Salinity (%) 0.35 ± 0.06 0.66 ± 0.04c 
ElementsInfluentEffluent
TAN-N (mg L−1856 ± 12 n.d. 
NO2-N (mg L−1n.d. n.d. 
NO3-N (mg L−1n.d. 847 ± 54 
S2−-S (mg L−1384a n.d. 
S2O32−-S (mg L−1n.d. n.d. 
SO42−-S (mg L−125 ± 1 183 ± 34b 
PO43−-P (mg L−1119 ± 11 58 ± 38b 
DOC (mg L−163 ± 1 81 ± 1d 
Salinity (%) 0.35 ± 0.06 0.66 ± 0.04c 

TAN, Total ammonium nitrogen; DOC, Dissolved organic carbon; n.d., not detected.

aCalculated from supplied solution concentration. Student's t-test was conducted on SO42−, PO43− and DOC concentrations and salinity of influent and effluent (n ≥ 3).

bp < 0.05.

cp < 0.005.

dp < 0.001.

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