Effect of aerobic pretreatment on anaerobic digestion of olive mill wastewater (OMWW): An ecoefficient treatment

González-González, A.; Cuadros, F.

doi:10.1016/j.fbp.2014.10.005

Cited by 58 publications

(12 citation statements)

References 24 publications

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“…The ANRC can be complemented with an aerobic pre-or post-treatment, as better remineralization performance can be assumed, and chemical oxygen demand (COD) reduction has been observed [81]. Yet, it must be noted that the drawback of an additional aerobic step is additional production of biomass (i.e., bacteria growth) that consumes part of the available nutrients.…”

mentioning

confidence: 99%

Navigating towards Decoupled Aquaponic Systems: A System Dynamics Design Approach

Goddek

Espinal²,

Delaide

et al. 2016

Water

124

115

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Abstract:The classical working principle of aquaponics is to provide nutrient-rich aquacultural water to a hydroponic plant culture unit, which in turn depurates the water that is returned to the aquaculture tanks. A known drawback is that a compromise away from optimal growing conditions for plants and fish must be achieved to produce both crops and fish in the same environmental conditions. The objective of this study was to develop a theoretical concept of a decoupled aquaponic system (DAPS), and predict water, nutrient (N and P), fish, sludge, and plant levels. This has been approached by developing a dynamic aquaponic system model, using inputs from data found in literature covering the fields of aquaculture, hydroponics, and sludge treatment. The outputs from the model showed the dependency of aquacultural water quality on the hydroponic evapotranspiration rate. This result can be explained by the fact that DAPS is based on one-way flows. These one-way flows results in accumulations of remineralized nutrients in the hydroponic component ensuring optimal conditions for the plants. The study also suggests to size the cultivation area based on P availability in the hydroponic component as P is an exhaustible resource and has been identified one of the main limiting factors for plant growth.

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mentioning

confidence: 99%

Navigating towards Decoupled Aquaponic Systems: A System Dynamics Design Approach

Goddek

Espinal²,

Delaide

et al. 2016

Water

124

115

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“…For all the above reasons, aerobic processes are unsuitable for direct and efficient treatment of OMW. Many researchers suggest that they can be used as pretreatment or posttreatment steps to increase the efficiency of the main treatment processes used (Azbar et al, 2008;Justino et al, 2009;Pelendridou et al, 2014;González-González and Cuadros, 2015;Tekerlekopoulou et al, 2017). Anaerobic treatment consists of a series of microbiological processes that convert organic compounds into biogas that can be used for energy production.…”

Section: Important Strategies For Omw Treatmentmentioning

confidence: 99%

Chemical Coagulation/Flocculation Processes for Removal of Phenolic Compounds from Olive Mill Wastewater: A Comprehensive Review

Achak¹,

Elayadi²,

Boumya³

2019

American Journal of Applied Sciences

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Olive oil extraction processes generate three phases: Olive oil, solid residue (pomace) and aqueous liquor Olive Mill Wastewater (OMW). OMW causes serious environmental deteriorations such as coloring of natural waters, alteration of soil quality, phytotoxicity and odor nuisance. The direct discharge of this effluent into the soil bring various negative effects on the environment, due to its high load of organic matter and phenolic compounds. Coagulation, flocculation and their combination processes are among the most applied processes for wastewater treatment. The application of coagulation technique using mineral and inorganic polymeric coagulants and acid cracking is not always effective to reduce COD and phenolic compounds from OMW except lime. Although direct flocculation is a low treatment cost, use less chemical and produce less sludge, the efficiency of COD and phenolic compounds removal remain very low. Coagulationflocculation process is developed in order to enhance the removal efficiency of organic matter from OMW by optimizing the operating conditions. However, many studies showed that the combination of various cationic organic coagulant and flocculant agents did not show any significant decrease of COD and phenolic compounds except for lime combination. In the present review, recent research studies dealing with the application of coagulation/flocculation for removal of phenolic compounds and COD from OMW are presented and compared. Furthermore, the main factors that influence the selection between coagulation, direct flocculation and coagulation-flocculation are presented and the principal removal mechanisms are discussed.

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“…González-González et al [17] ran an aerobic pretreatment before anaerobic digestion in order to remove phenolic compounds and decrease COD. They observed a reduction in 78 and 90% of polyphenols and 18 and 21% of COD for aeration periods of 5 and 7 days, respectively.…”

Section: Bioconversion Processes With Energy Productionmentioning

confidence: 99%

A Brief Review on Recent Processes for the Treatment of Olive Mill Effluents

Ochando-Pulido¹,

Fragoso²,

Macedo³

et al. 2016

Products From Olive Tree

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During the last few decades, olive oil industrial sector has grown as a result of the modernization of olive oil mills, in response to the increasing demand of olive oil worldwide. "s an undesired side efect, the amount of olive mill eluents OME) increased, especially as a result of changing old batch press method for the continuous centrifugation-based olive oil production processes currently used, which ensure higher productivity. This chapter presents the state of the art of OME management, with focus on biological and advanced oxidation processes, either alone or in combination, varying in complexity, ease of operation and costs associated. Up to this moment, there isn't a management strategy that can be adopted in a global scale, feasible in diferent socio-economic contexts and production scales. The most reasonable approach is to regard OME valorisation as a regional problem, deining decentralized treatment that in some cases can be implemented for a group of olive oil mills in the same geographic area. This aspect is receiving strong atention as European Commission is promoting the transition towards a circular economy, which aims at closing the production loop by recycling and reusing resources, bringing beneits for the environment, society and the economy.

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Effect of aerobic pretreatment on anaerobic digestion of olive mill wastewater (OMWW): An ecoefficient treatment

Cited by 58 publications

References 24 publications

Navigating towards Decoupled Aquaponic Systems: A System Dynamics Design Approach

Navigating towards Decoupled Aquaponic Systems: A System Dynamics Design Approach

Chemical Coagulation/Flocculation Processes for Removal of Phenolic Compounds from Olive Mill Wastewater: A Comprehensive Review

A Brief Review on Recent Processes for the Treatment of Olive Mill Effluents

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