Involvement of microbial populations during the composting of olive mill wastewater sludge.
Olive mill waste water sludge obtained by the electro-Fenton oxidation of olive mill waste water was composted in a bench scale reactor. The evolution of microbial species within the composter was investigated using a respirometric test and by means of both cultivation-dependent and independent approaches (Polymerase Chain Reaction-Single Strand Conformation Polymorphism, PCR SSCP). During the period of high respiration rate (7-24 days), cultivation method showed that thermophilic bacteria as well as actinomycetes dominated over eumycetes. During the composting process, the PCR-SSCP method showed a higher diversity of the bacterial community than the eukaryotic one. After 60 days of composting, the compost exhibited a microbial stability and a clear absence of phytotoxicity.
Abid
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N
Laboratoire des Bioprocédés, Centre de Biotechnologie de Sfax. BP: "K" 3038 Sfax, Tunisia.
Chamkha
M
M
Godon
J J
JJ
Sayadi
S
S
D039903:Actinobacteria / Q000235:genetics / Q000302:isolation & purification*; D001105:Archaea / Q000235:genetics / Q000302:isolation & purification*; D001419:Bacteria / Q000235:genetics / Q000302:isolation & purification*; D019641:DNA, Archaeal / Q000737:chemistry / Q000235:genetics; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D007220:Industrial Waste; D000069463:Olive Oil; D010938:Plant Oils; D016133:Polymerase Chain Reaction; D018807:Polymorphism, Single-Stranded Conformational; D012722:Sewage / Q000382:microbiology*; D012987:Soil; D012988:Soil Microbiology; D014865:Waste Disposal, Fluid / Q000379:methods
D019641:DNA, Archaeal; D004269:DNA, Bacterial; D004271:DNA, Fungal; D007220:Industrial Waste; D000069463:Olive Oil; D010938:Plant Oils; D012722:Sewage; D012987:Soil