Abstract：
:The dynamics of ammonium accumulation and mitigation control in anaerobic digestion of chicken manure under the recycled utilization of liquid digested slurry were investigated by using an integrated approach in two laboratory-scale semi-continuously stirred tank reactors. In the reactor with direct recycled utilization of the anaerobic digested liquid slurry, total volatilized fatty acids (in CH3COOH) and NH4(+)-N increased from 1600mg/L to 8000mg/L and from 2600mg/L to 5000mg/L, respectively. The daily volumetric biogas production decreased from 1.4±0.1L/(L·d) to 0.8±0.1L/(L·d) with a reduction efficiency of 43±4%. Air stripping was integrated for ammonium mitigation of recycled liquid digested slurry and was shown to effectively reduce the ammonium to 3000mg/L. Correspondingly, the biogas production was recovered back to 1.4±0.1L/(L·d). This indicated the potential of the integration of air stripping for ammonium mitigation in an anaerobic digestion process with liquid digested slurry recirculation.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wu S,Ni P,Li J,Sun H,Wang Y,Luo H,Dach J,Dong Rdoi
10.1016/j.biortech.2016.01.021subject
Has Abstractpub_date
2016-04-01 00:00:00pages
75-81eissn
0960-8524issn
1873-2976pii
S0960-8524(16)00033-Xjournal_volume
205pub_type
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