Anaerobic digestion of olive oil mill wastewaters

Boari, G.; Brunetti, Alberto; Passino, R.; Rozzi, A.

doi:10.1016/0141-4607(84)90057-x

Cited by 148 publications

(88 citation statements)

References 4 publications

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“…Apart from dilution with water, other pre-treatments include (a) aerobic biological treatment (Borja et al 1998;Hamdi 1996), (b) pre-treatment with specific aerobic organisms like the fungi Phanerochaete chrysosporium (Gharsallah et al 1999) and (c) the addition of a source of nitrogen (Boari et al 1984;Demirer et al 2000). Another approach adopted by researchers to minimise the difficulties of OMWW anaerobic digestion is the codigestion of OMWW with other substrates to compensate for its low alkalinity and nitrogen.…”

Section: Anaerobic Biodegradationmentioning

confidence: 99%

Bioremediation and biovalorisation of olive-mill wastes

Morillo

Antízar-Ladislao

Monteoliva‐Sánchez

et al. 2009

Appl Microbiol Biotechnol

199

104

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Olive-mill wastes are produced by the industry of olive oil production, which is a very important economic activity, particularly for Spain, Italy and Greece, leading to a large environmental problem of current concern in the Mediterranean basin. There is as yet no accepted treatment method for all the wastes generated during olive oil production, mainly due to technical and economical limitations but also the scattered nature of olive mills across the Mediterranean basin. The production of virgin olive oil is expanding worldwide, which will lead to even larger amounts of olive-mill waste, unless new treatment and valorisation technologies are devised. These are encouraged by the trend of current environmental policies, which favour protocols that include valorisation of the waste. This makes biological treatments of particular interest. Thus, research into different biodegradation options for olive-mill wastes and the development of new bioremediation technologies and/or strategies, as well as the valorisation of microbial biotechnology, are all currently needed. This review, whilst presenting a general overview, focusses critically on the most significant recent advances in the various types of biological treatments, the bioremediation technology most commonly applied and the valorisation options, which together will form the pillar for future developments within this field.

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Section: Anaerobic Biodegradationmentioning

confidence: 99%

Bioremediation and biovalorisation of olive-mill wastes

Morillo

Antízar-Ladislao

Monteoliva‐Sánchez

et al. 2009

Appl Microbiol Biotechnol

199

104

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“…Some of the factors responsible for this issue have been studied recently. Very poor granulation was observed in the UASB reactor treating fat, oil and grease (FOG)-rich substrate [12,13]. Chou and Huang [14] observed that smaller granules were formed in the phenol-fed UASB reactor than in the sucrose-fed reactor.…”

Section: Introductionmentioning

confidence: 99%

Release of Extracellular Polymeric Substance and Disintegration of Anaerobic Granular Sludge under Reduced Sulfur Compounds-Rich Conditions

Kobayashi

Chiku

2015

Energies

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Abstract:The effect of reduced form of sulfur compounds on granular sludge was investigated. Significant release of extracellular polymeric substance (EPS) from the granular sludge occurred in the presence of sulfide and methanethiol according to various concentrations. Granular sludge also showed a rapid increase in turbidity and decrease in diameter in accordance with sulfide concentration during the long-term shaking, suggesting that the strength of the granules was reduced with high-concentration sulfide. A continuous experiment of up-flow anaerobic sludge blanket reactors with different concentrations of sulfide (10, 200, 500 mg-S/L) influence demonstrated that the reactor fed with higher concentration of sulfide allowed more washout of small particle-suspended solid (SS) content and soluble carbohydrate and protein, which were considered as EPS released from biofilm. Finally, the presence of sulfide negatively affected methane production, chemical oxygen demand removal and sludge retention in operational performance.

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“…Many researchers have pointed at the imbalance in the COD:N ratio in OMW for biological wastewater treatment [2,12,13]. For anaerobic treatment, the required nitrogen and phosphorous concentration is distinctly lower than in the case of aerobic treatment, because under anaerobic conditions the sludge yield is much less.…”

Section: Nutrients Requirements In Anaerobic Treatment Of Omwmentioning

confidence: 99%

“…four to five times [1,2,12,14]. Dilution and appropriate mixing is of particular importance during the start up, because else the process will become very unstable.…”

Section: Treatment In Uasb Reactorsmentioning

confidence: 99%

Anaerobic Treatment of Olive Mills Water: Potentials for Watershed Protection in Jordan

Mahmoud¹,

Mels²,

Lier³

2017

Eco-Tech

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Jordan watersheds heavily suffer from the seasonal discharge of highly concentrated olive mill wastewater (OMW). Environmental concern and protection of the scarcely available water resources calls for adequate treatment of OMW prior to discharge. This paper describes an inventory that was made with the aim of developing pollution prevention strategies for the olive mill sector of the Jerash Governorate in Jordan. Emphasis was given to compiling regional research which shows that modern anaerobic technology may play an important role in treating the highly concentrated OMW. The paper also presents pre and post treatment options for achieving local discharge criteria. Based on literature review and current insights three innovative treatment strategies are presented for OMW in the Jerash region.

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Anaerobic digestion of olive oil mill wastewaters

Cited by 148 publications

References 4 publications

Bioremediation and biovalorisation of olive-mill wastes

Bioremediation and biovalorisation of olive-mill wastes

Release of Extracellular Polymeric Substance and Disintegration of Anaerobic Granular Sludge under Reduced Sulfur Compounds-Rich Conditions

Anaerobic Treatment of Olive Mills Water: Potentials for Watershed Protection in Jordan

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