Aerobic biological treatment of olive mill wastewater by olive pulp bacteria

Tziotzios, G.; Michailakis, S.; Vayenas, D.V.

doi:10.1016/j.ibiod.2007.03.003

Cited by 52 publications

(21 citation statements)

References 14 publications

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“…Several authors had previously screened some yeast strains and other microorganisms for lipase production and C. cylindracea is often pointed out as the best lipase producer. 7,8 Regarding OMW degradation, other authors reported that COD concentration gradually decreases throughout the experiments, 3,7,19 however in the herein reported batch experiments, negligible COD degradation was obtained. In fact, the OMW used in this study presented an extremely high value of COD (261 g L −1 ) while other authors generally use OMW with COD values below 100 g L −1 .…”

Section: Resultsmentioning

confidence: 54%

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Fed‐batch fermentation of olive mill wastewaters for lipase production

Gonçalves¹,

Oliveira²,

Pereira³

et al. 2012

J of Chemical Tech & Biotech

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In the Mediterranean basin countries, huge amounts of olive mill wastewaters (OMW) are produced by the olive oil industry. It constitutes a serious environmental problem, nevertheless its composition turns OMW into a potential growth medium to lipolytic microorganisms. The aim of this work was to study lipase production as well as OMW degradation in fed-batch cultures of Candida cylindracea CBS 7869, Candida rugosa CBS 2275 and Yarrowia lipolytica W29 (ATCC 20460). Besides the improvement of lipase production, the fed-batch approach enhanced the effluent degradation, since it led to good COD and lipids reduction, both higher than 50%. C. rugosa achieved the highest value of lipase productivity (130 U L −1 h −1 ), in parallel with highest lipids reduction (77%). This study demonstrates that OMW are becoming a competitive and valuable growth medium in fermentation processes with lipolytic microorganisms. The fed-batch strategy used proved to be an efficient approach to enhance lipase production from OMW and to reduce significantly the final organic load of the medium.

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Section: Resultsmentioning

confidence: 54%

“…In fact, the OMW used in this study presented an extremely high value of COD (261 g L −1 ) while other authors generally use OMW with COD values below 100 g L −1 . 3,7,19,20,21 Although this concentration has not been toxic for the microorganisms, it did not allow COD degradation.…”

Section: Resultsmentioning

confidence: 99%

Fed‐batch fermentation of olive mill wastewaters for lipase production

Gonçalves¹,

Oliveira²,

Pereira³

et al. 2012

J of Chemical Tech & Biotech

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show abstract

“…They are considered to be environmentally friendly, reliable and, in most cases, cost-effective. Care needs to be taken in the selection of the microorganisms employed and in their adaptation to treating OMW, as phenolic substances are inhibitory to microorganisms [11,12]. Over the last years, the recovery of polyphenols from OMW has been achieved in the laboratory using membranes [13], for the purpose of application in the pharmaceutical industry.…”

Section: Introductionmentioning

confidence: 99%

Detoxification and discoloration of Moroccan olive mill wastewater by electrocoagulation

Hanafi

Assobhei

Mountadar

2010

Journal of Hazardous Materials

131

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“…First, the polyphenols could be absorbed and thereafter biotransformed into other compounds or degraded by microorganisms. Studies have been concentrated especially on the role of bacteria [45] and fungi [46] in the degradative processes. Indeed, information on the relationship between algal heterotrophy and the biodegradation of phenolic compounds is far less than the information accumulated concerning bacteria and fungi.…”

Section: Total Phenolsmentioning

confidence: 99%