TY - JOUR
T1 - Anaerobic digestion of olive mill effluents
T2 - Microbiological and processing aspects
AU - Andreoni, Vincenza
AU - Bonfanti, Pierluigi
AU - Daffonchio, Daniele
AU - Sorlini, Claudia
AU - Villa, Michela
PY - 1993/11/1
Y1 - 1993/11/1
N2 - Olive mill effluents have been treated by anaerobic digestion, using a laboratory scale, fixed bed, upflow digester. The process was conducted with two different retention times (2 and 1 days); organic load was increased up to 40 kg C0D/m3d. COD removal and biogas production were used as indicator of process efficiency. Counts of the main microbial groups involved in methanogenesis were determined to study microorganisms behaviour with different process conditions. The best COD removal (70-80%) was obtained with 2 days retention time and organic load of 5.5-9.5 kg COD/m3d. By working with an organic load of 40 kg COD/m3d at 1 day retention time, plant performances decreased but the process was not inhibited. Acidogenic and methanogenic bacteria significatively decreased, when the digester operated at high organic load.
AB - Olive mill effluents have been treated by anaerobic digestion, using a laboratory scale, fixed bed, upflow digester. The process was conducted with two different retention times (2 and 1 days); organic load was increased up to 40 kg C0D/m3d. COD removal and biogas production were used as indicator of process efficiency. Counts of the main microbial groups involved in methanogenesis were determined to study microorganisms behaviour with different process conditions. The best COD removal (70-80%) was obtained with 2 days retention time and organic load of 5.5-9.5 kg COD/m3d. By working with an organic load of 40 kg COD/m3d at 1 day retention time, plant performances decreased but the process was not inhibited. Acidogenic and methanogenic bacteria significatively decreased, when the digester operated at high organic load.
KW - Anaerobic digestion
KW - methanogenic consortium
KW - olive oil mill effluents (OME)
UR - http://www.scopus.com/inward/record.url?scp=0027134327&partnerID=8YFLogxK
U2 - 10.1080/10934529309375994
DO - 10.1080/10934529309375994
M3 - Article
AN - SCOPUS:0027134327
SN - 1077-1204
VL - 28
SP - 2041
EP - 2059
JO - Journal of Environmental Science and Health - Part A Environmental Science and Engineering and Toxic and Hazardous Substance Control
JF - Journal of Environmental Science and Health - Part A Environmental Science and Engineering and Toxic and Hazardous Substance Control
IS - 9
ER -